question (final) ii

REVISED OBJECTIVE QUESTIONS & ANSWERS

1. End of steel bar sometimes painted in various colors & color combination as a mean of identifying different grade of steel.

1. Solid colors identify the alloy & strips identify the carbon contents (*)

2. Strips identify the alloy & solid colors identify the carbon content.

3. Both 1 & 2 are correct4. None of the above is correct

2. Which gage is used to measure the backlash between gears

1. Filler Gage (*)2. Screw Pitch Gage3. Fillet age4. DTI

3. Accuracy of finished screw thread is determined by

1. Screw pitch gauge (*)2. Ring thread gauge3. Thread Gauge4. Plug thread gauge

4. Highest size of drill is

1. No. 80 (0.0135)2. 3/16 (0.1875)3. 3.75 mm (0.1475)4. E (0.2500) (*)

5.Schematic diagrams are used mainly for

1. A/C maintenance & repair2. Trouble shooting3. Installation of parts4. All of the above are correct (*)

6.Mark the correct statement

1. Turboprop engine requires lengthy runway than piston engine of same power

2. Turbojet has more weight than piston engine of same power

3. Turbofan required sort runway as compare to turbojet (*)

4. All of the above are correct

7.In towing the a/c (light) mark the correct statement.

1. All tail wheel a/c towing towards backward

2. All nose wheel a/c towing towards backward

3. If steerable nose wheel a/c, locking scissors are set of full swivel position (*)

4. None of the above is correct

8.While starting the piston engine, which type of fire extinguisher is permitted

1. Water & water based agent2. CO2, 516 capacity (*)3. Dry chemical4. CC14 (Halon Gas)

9.Which core material don't gives deflection in composite

1. Honey comb (*)2. Synthetic resin3. Foam4. All of the above is correct

10. Paralketone used on

1. Cable (*)2. Iron3. Conduit4. None

11. Interpretation analysis of defect in PFD indicates by

1. Extent of White staining2. Red marks on white surface. *3. Greenish yellow.4. None of the above is correct.

12. In pfd, when used fluorescent, material color of defective part & sound part is

1. Brilliant yellow – green & blue violet (*)2. Brilliant yellow – green & bright red3. Bright red & blue violet4. None of the above is correct

115 CORRECT ANSWER IS MARKED * AT END


13. Ata – 100 code of hydraulic power, pneumatic, fire & engine oil is

1. 36, 26, 79, 832. 29, 36, 26, 783. 29, 36, 26, 79 (*)4. 79, 36, 29, 26

14. ATA –100 specification 37 indicates

1. Vacuum / pressure (*)2. Water / waste3. Pneumatic4. None of the above is correct

15. Needle bearing is used where movement is

1. Oscillatory rather than rotary (*)2. Rotary rather than oscillatory3. Both 1 & 2 are correct4. None of the above is correct

16. Embitterment is steel is reduced by

1. Heating the steel at 150 - 200 C (tempering)

2. Increasing the carbon percentage3. By annealing (*)4. None of the above is correct

17. Pressure of gas on acetylene welding is depend upon

1. Area of welding surface2. Type of material being welded3. As the welder will want4. None of the above is correct (*)

18. Mark the correct statement regarding Monel metal

1. It can not hardened by heat treatment (*)2. It can be hardened by heat treatment3. Either 1 & 2 are correct4. None of the above is correct

19. Mark the incorrect statement

1. Ultrasonic inspection _______ Piezo- electric effect (Radiography)

2. MPI ________ skin effect (Ultrasonic) (*)3. Eddy current _____ current acceptance4. PFD _________ capillary action

20. If no marking of drill, identification of drill can be measured by drill gauge having

1. Fraction on right & number on left2. Fraction on left & number on right (*)3. Both 1 & 2 are correct4. None of the above is correct

21. Diameter of rivet is

1. 2 times of thickness of sheets2. 3 times of thickness of thickest sheet (*)3. 3 times of thickness of joint sheets4. Equal to grip length

22. Extension tap is used for

1. Cut full threads in blind hole to bottom2. Cut the thread in deep hole (*)3. Thread cuts on long shaft4. All of the above

23. Lift & drag depends upon

1. More cambered area of upper side & less of lower side of wing.

2. More cambered area of lower side and less on upper side.

3. As in 1 & Angle of attack4. As in 3 & Speed of aircraft *

24. Gear rack is used for

1. Change rotary motion to reciprocating motion (*)

2. Change reciprocating motion to rotary motion

3. Transmit motion to parallel with it4. None of the above is correct

25. Indication of class – b fire is

1. Red (*)2. Yellow3. Green4. Brown

CORRECT ANSWER IS MARKED * AT END 116


26. Color of extruded bar of aluminum alloy in 5 inches is

1. Red marking near the end of each length

2. Blue marking near the end of each length

3. Stamp of blue & white color4. None of the above is correct

27. What size of the hole should be bored before cutting a 2.5" internal acme thread having 3 thread per inch

1. 2.5"2. 2.1667" (*)3. 3.5"4. 2.75"

28. Mark the correct statement

1. Light a/c is tied down after every flight2. Light a/c is not require tied down3. Only when strong air being to flow then

tie down (*)4. Both 1 & 3 are correct

29. Dis-integrator is used to

1. Making hole in conductive metal2. Making hole in non-conductive job3. Making hole clearly & fairly4. Both 1 & 3 are correct (*)

30. Transferred metal by chemical action over a surface for

1. Provide corrosion resistance surface2. Provide base for further plating3. Forward up4. All the above (*)

31. For commercial annealing, cooling is done in

1. Furnace (*)2. Air3. Mica4. Both 1 & 2 are correct

32. The heat of the furnace can be controlled or regulated by

1. Be watching the color of the furnace2. Pyrometer3. Thermo meter4. All are correct (*)

33. Cyaniding of low carbon is quenched in

1. Oil2. Brine3. Water4. Both 1 & 2 (all) are correct (*)

34. How long piece of steel is left in a furnace for soaking

1. For long enough to ensure a good even heat throughout (*)

2. For 2 hours for per cubic inch of piece3. One hour for each square inch of cross

section area4. Both 1 & 3 are correct

35. Scale often forms on the surface of the metal & dirt blocked on it, cleaning of scale & dirt from heat threaded part is done by

1. Steel wire brush2. Sand blasting3. Scrap4. All of the above is correct (*)

36. In Rockwell hardness testing.

1. Softer the piece of metal, the deeper will be the impression under given load

2. The hardness is indicated on a dial gage graduated in the B & C scale

3. For non-ferrous metal, the steel ball should be used & hardness no read on B scale

4. All the above are correct (*)

37. Flame heating is done for

1. When hardness is required only for a limited depth of the material

2. For small part3. Both 1 & 2 are correct (*)4. None of the above is correct

38. Fatigue crack is detected by

1. Ultrasonic (*)2. Radiography3. Body current4. All are correct



39. End of the steel bars are sometime painted in various

1. Color & color combination as a means of identifying the carbon constant

2. Strips identifying the alloy and solid color identifying the carbon

3. Alloy identified by color, content by stripes (*)

40. To prevent solder from running away from the surface to be jointed.

1. Flux is used (*)2. Temperature is maintained3. Clay is commonly used to surround the

area to be jointed4. All are collect

41. Braze welding is

1. Known as force welding (bronze welding)

2. A welding in which base metal is not fuse

3. A combination of brazing & welding4. All are correct (*)

42. Which statement is correct

1. Low temperature brazing is also known as hard soldering or silver soldering (*)

2. Silver welding has equal strength of material

3. After silver soldering, further heat treatment is required

4. Both 1 & 2 are correct

43. Unit of radio active material is

1. Curies & Rutherford scale.2. Roentgen. 3. Both 1 & 2 are correct. *4. None of the above is correct

44. Radioactive decay is measured in tennis of

1. Curies2. Half life (*)3. Both 1 & 2 are correct4. None of the above is correct.

45. Which does not passage in electromagnetic radiation

1. X-ray (*)2. Light3. Infrared ray4. Thermal

46. Density of radioactive mean is

1. Sharpness of image detail on a radiograph

2. Degree of blackening of a radio graph (*)

3. Relative brightness of two adjacent area4. Both 1 & 3 are correct.

47. Welding decay in stainless steel is reduced by

1. Stainless steel containing titanium2. Low temperature3. By reducing heating time4. All of the above is correct (*)

48. The term used on worm gear

1. Throat2. Throat radius3. Throat diameter4. All of the above is correct (*)

49. In flour sent method

1. If wet developer is applied, it must be dried (*)

2. If dry developer is applied, it must not be dried

3. Dry for long period4. All are wrong

50. Telescoping gage

1. Is used for inside diameter measurement

2. Range from ½" to 6"3. Range from ½" to 1"4. Both 1 & 2 are correct (*)

51. Small hole gage is used for

1. Measuring grooves & slots2. Measuring small hole3. Both 1 & 2 are correct (*)4. None of the above is correct



52. The size of the flat cold chisel is determined by

1. Width of the cutting edge (*)2. Length of the cutting edge3. Length of chisel4. All of the above are correct


1. Straight fluted reamer is less tendency the chatter

2. Spiral type are tapered for the short distance back of end to and in starting (*)

3. Bottoming reamer have tapers end & are used to short hole


54. Thread may be produced by

1. On a lathe with specially shaped cutting tool

2. On spiral machine using rotary cutter3. By rolling on spiral machine using dies4. All of the above are correct (*)

55. Needle file are

1. Knurled on both side2. Knurled on one side only3. Use on slat by diameter & watch maker4. Both 1 & 3 are correct (*)

56. Hook spanner is used on

1. Round nut having series of notches or slots cuts on its side (*)

2. Hexagonal nut with slots3. ??? nut with slots4. All of the above are correct

57. Meshing gear have same

1. Teeth (*)2. Pitch number of some size3. Dedendum4. All of the above are correct

58. Vernier scale is used on

1. Microscope (*)2. Boroscope3. Spheroscope4. All of the above is correct


1. Force is exerted on charged particle2. Force is applied on charged particle

moving along the magnetic field (*)

60. When two sphere of same mass, one id +ve charged & other is – ve charged, then new mass will

1. Change 2. Unchanged (*)3. Depend on capacity

61. If the conductor is of 4 & it stretched to twice of its length, then its resistance is

1. 1 2. 8 (*) 3. 12 4. 16

62. A & B are big & small battery, having same emf. Internal resistance of battery A is

1. Less than B (*)2. Greater than B3. Equal to B4. Unaffected


1. Battery terminal voltage is equal to battery emf

2. Battery terminal voltage is less than battery emf (*)

3. Battery terminal voltage is more than battery emf

4. Depends on direction of current flow

64. In a sport welding a typical defect is

1. Porosity2. Crack3. Irregular shape4. Both 2 & 3 are correct (*)

65. In oxyacetylene welding while shutting off the flame

1. Oxygen is shut out first2. Acetylene is shut off first (*)3. Both are shut off simultaneously



66. Oxyacetylene flame with equal volume of oxygen & acetylene gives the types of flame as shown

1. Carbonizing2. Oxidizing3. Neutral (*)4. There is no such flame

67. The silver solder metal melts at

1. 200 – 400 degree cent2. 300 – 600 degree cent (*)3. 1000 – 2000 degree cent4. 850 – 1200 degree cent

68. Synthetic thermoplastic

1. When heated becomes soft2. When heated becomes hard3. When cools become hard4. Both 1 & 3 are correct (*)

69. A crack may be repaired by

1. But welding. *2. Spot welding3. Lap welding

70. In dye penetrant test, the indication dotted lines shown, indicates

1. Porosity (*)2. Tight crack.3. Continuous flows.4. All of the above.

71. Corrosion on the surface of aluminum alloy is indication on the form of

1. Metal bulging2. White powdery deposits (*)3. Gray power deposits.4. All of the above.

72. Fillet weld is a weld which

1. Joins the surfaces which are perpendicular to each other (*)

2. Joins the two parts in the same plane by clamping

3. Joins the two parts in the same plane by overlapping


73. Radiography NDT test

1. Low wave length & high penetration(*)2. High wave length & low penetration3. Invisible ray4. Both 1 & 3 are correct

74. To obtain clean & good weld

1. Weld may be filled evenly & slowly 2. Filed with solder & brazing metal3. None of the above is correct (*)

75. The brazing the flame to be used is

1. Neutral flame (*)2. Oxidizing flame3. Slightly carbonizing4. Any flame

76. Rockwell hardness tester

1. Measures resistance to penetration2. Measures diameter of indention3. Measures depth of penetration (*)4. Both 1 & 3 are correct

77. Galvanic corrosion occurs between

1. Dissimilar metals joined without insulation between them (*)

2. Al-alloy structured assembled with steel screw


78. Aviation snip is sued for cutting

1. Thick metal sheet2. Thick stainless sheet3. Heat treated al-alloy & stainless steel

sheet (*)4. All types of thick sheet

79. Headless grub screws are installed by

1. Allen key (*)2. Special type of ratchet spanner3. Suitable screw driver4. Special tool

80. An altimeter has

1. Stack of three evacuated bellows2. Stack of two evacuated bellows3. Barometric pressure setting provision



4. All of the above is correct (*)

81. In a micrometer in the main scale each cm divided into 10 equal parts & in circular scale, 9 division of main scale equals to 11 divisions of circular scale the least count of the micrometer is

1. 1 mm2. 0.01 mm3. 0.01 cm (*)4. 0.0001 mm

82. In a micrometer the smallest division on main scale is 0.5 mm. The vernier scale is divided into 25 division & it moves one division on the main scale for complete rotation of the vernier scale then the least count of he micrometer is

1. 0.01 mm2. 0.002 cm (*)3. 0.01 cm4. 0.001 mm

83. Altimeter in absence of manometer may be checks

1. Vacuum gauge2. Vacuum chamber (*)3. Micro manometer4. All of the above is correct

84. In four digit Non Ferrous alloy index system 2024, the first digit indicates

1. The % of Aluminum-added2. The different alloy in this group3. Alloy group4. Copper is the major alloying element (*)

85. Why it is considered good practice to normalize a part after welding

1. To relieve internal stresses developed within base metal (*)

2. To introduce a slight amount of carbon to improve the surface hardness of the weld

3. To remove the surface scales formed during welding

4. All of the above is correct

86. The color of 100 LL fuel is

1. Blue (*)2. Green

3. Red4. None of the above is correct

87. Select the characteristics of a good gas weld

1. The depth of penetration shall be sufficient to ensure fusion of filler rod

2. The height of weld healed should be 1/8" above base metal

3. The weld should taper off smoothly into base metal (*)

4. These should be no oxide on the weld.

88. Which tool can be used to measure the alignment of a rotor shaft or the place of rotation of disk

1. Dial indicator (DTI) (*)2. Shaft gage3. Protector4. All of the above is correct

89. The measurement reading on vernier scale

1. 1.411"2. 1.436"3. 1.700"4. 1.456"

90. Side clearance of piston ring is measured by

1. Micrometer2. Thickness gauge (*)3. Depth gauge4. Dial gauge

91. What tool is generally used to set a divider to an exact dimension

1. Mechanic scale (*)2. Surface gauge3. Dial indicator4. All are correct

92. Which statement is correct regarding tie-down of small a/c

1. Manila rope has a tendency to stretch when it gets wet

2. Nylon or Dacron rope is preferred to manila rope (*)

3. The a/c should be headed down wind in order to eliminate or minimize wing lift



4. Leave the nose wheel or tail wheel unlocked

93. Flow of aviation fuel which passes greater antiknock quality than 100 octane, classified

1. According to the multiplies of lead2. By reference to normal Heptanes3. By performance number (*)4. None of the above is correct

94. A primary cause of intergranular corrosion is

1. Improper heat treatment (*)2. Dissimilar metal contact3. Improper application of heat4. None of the above is correct

95. Corrosion caused by galvanic action is result of

1. Excessive anodization2. Contact of two unlike metals (*)3. Excessive etching4. All of the above is correct

96. The internal surface of sealed structural steel tubing is best protected against corrosion by

1. A coating of hot linseed oil (*)2. Evacuation of tubing before sealing3. A coating of Zn – chromate primer4. None of the above is correct

97. One way to obtain increased resistance to stress corrosion is obtained by

1. Releasing compressive stress on metal2. Creating compressive stress on metal. * 3. Producing non-uniform deformation

while cold working4. All are correct

98. Which statement is correct regarding hand tap

1. Taper, plug, bottoming2. As in (1) & bottoming tap is used to cut

thread at bottom (*)

3. Plug, taper & bottoming.4. As in (3) & bottoming tap is used to cut

thread at bottom.

99. Which maintenance record entry best describe the action taken by FAR when a 0.125" dent in a straight section o9f ½" Al-alloy tubing is found

1. Dent is acceptable limit & repair not necessary

2. Dented section removed & replaced with identical new tubing flared 45.

3. Dent removed by drawing appropriate size bullet through the tubing (*)

4. Deferred to maintenance check.

100. EMF is produced in generator by

1. Lenz's Law2. Electromagnetic Induction (*)3. Right Hand Fleming Rule4. None of the above is correct

101. AN coupling used in Aluminum tube ½ inch diameter is

1. AN 818-52. AN 818-23. AN 818-8 (*)4. None of the above.

102. Roller bearing take more radial load than ball bearing of same size because

1. Larger contact area (*)2. High rotation speed.3. Low rotation speed.

103. In brinell hardness testing, the thickness of material should not be less than

1. 5 times diameter of the ball. 2. 10 times diameter of the ball. *3. 20 times diameter of the ball.4. 50 times diameter of the ball.


1. Swg 0 is small2. Swg 14 is thicker than swg 18 (*)3. Swg 14 is smaller than swg 184. None of the above is correct

105. Bottle jack is used.

1. To raise one wheel to remove brake unit



2. To raise single wheel3. To raise single wheel to remove one

brake unit4. All are correct (*)

106. Liquid penetrant test is carried out in

1. Porous plastic2. Nonferrous metal (*)3. Unpainted cleaned wood4. Any one or all of the above are correct


1. Tank inserted into handle is knows as safe edge

2. When filling is done, use lubricant3. Blade is made of steel & is not heat

treated4. None of the above is correct (*)

108. Ohm's Law is

1. I V2. V I (*)3. I R4. V R

109. Flux used in soldering is

1. Chemically clean the metal by removing oxide film (*)

2. Increase strength.3. Make strong joint.

110. Edge distance is

1. 2 times the shank diameter (*)2. 2 times the sheet thickness3. 2 times of head diameter4. None of the above is correct

111. Which statement is correct regarding Air speed indicator (ASI).

1. Pitot pressure is given inside capsule.2. Static pressure is given outside the

capsule.3. Measure differential pressure.4. All are the correct (*)

112. Which one is input device

1. Keyboard2. Mouse3. Telephone line4. All are the correct (*)

113. MODAM (Modulator – Demodulator) used is

1. A part of CPU2. A software3. Input / output peripheral (*)4. Operating system

114. When jacking the aircraft

1. Aircraft nose put to the wind.2. Select hard & smooth surface.3. Both 1 & 2 are correct.(*)4. None of the above is correct

115. When defuelling is done on swept back wing a/c. best precaution is

1. Outboard tank drain first (*)2. Fuselage tank drain first3. Inboard tank drain first4. All tank drained together

116. When a/c fuelling with pressure fuelling, precaution taken

1. Fuel nozzle pressure kept minimum to the fuel filter

2. Pressure should be adequate or correct setting (*)

3. Electric s/w on to indicate the fuel quantity on gauge

4. Fuel nozzle inserted before grounding

117. Negative plate of Ni-cd battery is of

1. Pure cadmium (*)2. Nickel hydroxide3. Cadmium hydroxide4. None of the above is correct

118. Electrolyte used in lead acid battery

1. KOH2. Dilute H2SO4 (*)3. Concentrated H2SO4


119. Transistor used as

1. Voltage Regulator / Doublers.2. Rectifier3. Amplifier (*)4. All the Correct

120. Convert 37 decimal into binary 115 CORRECT ANSWER IS MARKED * AT END


1. 100101 (*)2. 1111113. 1010104. 110110

121. How will you remove the screw

1. By welding2. Drill the head (*)3. Both 1 & 2 are correct4. None of the above is correct

122. Bevel gear is used to

1. Transmit single load2. Transmit heavy load3. Transmit motion at on angle to (*)4. Transmit motion between two parallel

shaft

123. After cyaniding quenching is done in

1. Brine2. Water3. Oil4. Both 1 & 3 are correct (*)

124. To stop solder from flowing normally

1. Clay is used2. A flux is used (*)3. Metal boundary is used.4. None of the above is correct.

125. Hard soldering (silver soldering is low temperature brazing)

1. Is done at low temperature brazing2. Produces strength equal to parent metal3. Both 1 & 2 are correct (*)4. None of the above is correct

126. Flame is used to heat metal during heat treatment for

1. Small parts2. Where furnace is not available3. Heat treatment requirement is not very

exacting4. Large parts & where a particular area is

to be heated (*)


1. Detection w4elds in thicker material UFD is best

2. X-ray best for welds in sheets3. Both 1 & 2 are correct (*)4. All of the above is correct

128. When flying along magnetic equator, dip will be

1. Increased2. Remain unchanged (*)3. Decreased4. Depends upon direction of flight

129. Identification of alloy is made of by

1. Alloy identified by color, content by stripes (*)

2. Alloy by stripes & content by color.3. As in 2 and number.4. None of the above is correct.

130. Heat treated parts having bake-dirt & scale can be cleaned

1. Wire brush2. Scraping3. Sand blasting4. None of the above is correct (*)

131. Pre & past treatment of cad-plating of ferrous part depends on

1. Strength of part2. Surface hardening & hard spots3. Corrosion resistance4. All of the above is correct (*)

132. The soaking time varies as

1. Till alloy uniformly heated2. 2 hrs / unit volume3. 1 hr / unit cross section area4. None of the above is correct (*)

133. Vernier scale is also used in

1. Microscope & spectrometer2. Sextant & spectrometer 3. Both 1 & 2 are correct4. None of the above is correct (*)

134. In brazing



1. Post heat treatment may be carried to relieve stresses (*)

2. Post heat treatment may not be carried to relieve stresses

3. As 1 & 2 are in correct

135. Pre-pregs material is

1. Eleminate manual mixing & weighing2. Must be stored in freeze.3. Also made in unidirectional4. All of the above is correct (*)


1. Boron fibre is made by depositing boron2. Tungsten & ceramic fibre in high heat

application3. Ceramic used in heat application,

dissipating heat slowly (*)4. Both 1 & 2 are correct

137. Disbond & water in honeycomb & impect damage is detected by

1. Laser holography (*)2. Ultrasonic3. Visual inspection4. None of the above is correct

138. In NPN transistor, arrow heat indicates

1. Hole flow (*)2. Electron flow 3. Minority carrier flow from emitter to base4. Majority carrier flow from emitter to base


1. Weld in thick material can not be detected by ultrasonic

2. Weld in thin material can be detected by X-ray (*)

3. Always detected by dye penetrant4. All above are correct

140. The opposition offered in AC circuit are called

1. Impedance. *2. Resistance

3. Inductance4. All of the above is correct

141. Which of the following is used as voltage regulator device

1. Carbon pile voltage regulator2. Magnetic amplifier regulator3. Transistor regulator4. All are correct (*)

142. Range of ammeter can be increased by

1. Connecting high resistance in parallel2. Connecting high resistance in series3. Connecting low resistance in parallel (*)4. Connecting low resistance in series

143. Ampere meter has

1. Low resistance in series2. High resistance in series3. Low resistance in parallel (*)

144. Transistor is biased

1. Base & emitter forward biased. 2. Base & emitter reverse biased.3. Collector is reversed biased.4. 1 & 3 are correct. *

145. In tetrode, the screen grid is

1. Always at positive potential & the voltage is less than plate voltage (*)

2. At negative potential & the voltage is less than plate voltage

3. Voltage is more than plate voltage4. None of the above is correct

146. In square threads

1. Width, height & length are same2. Difficult to machine3. More strength4. All are correct (*)

147. In ATA-100 systems, 36 represents

1. Hydraulic system.2. Oxygen system.3. Pneumatic system. (*)4. Landing gear system.



148. Which of the statement is correct regarding bearing

1. If corrosion is found on the outer surface, it should be rejected

2. Bearing must be inspected periodically at least once in a year (*)

3. Shielded bearing is used be inspected for corrosion


149. The diameter of the aluminium sheet increase

1. As the gauge no increase2. As the gauge no decrease (*)3. Remain constant4. Varies from gauge to gauge

150. Piezo electricity is produced

1. By the vibration of ceramic2. By the vibration of quartz, Rochelle salt

& ceramic (*)3. Sound waves have no connection with

this4. All are wrong

151. Titanium can be identified by

1. Spark test (used for various metal & some time from ?

2. Moisturing & scratching with a pencil3. Chemical test4. Both 1 & 2 are correct (*)

152. The heat resistance resin is

1. Epoxy (cyclo eliphatic resin) (*)2. Polyester3. Thermosetting plastic4. Thermoplastic

153. For maximum ductility, elongation & impact resistance of Mg-alloy is

1. Solution heat treatment (*)2. Casted3. Precipitation heat treatment4. Both 1 & 3 are correct

154. Precaution in Al, welding

1. Neutral flame is used2. Preheating is needed3. Flux is used


155. The thickness of the conducting & non-conducting coating in ferrous metal can be measured by,

1. Varnier coliper2. Varnier micrometer3. Ultrasonic4. Eddy current method (*)

156. To measure the thickness of the hollow tubular member normally done by

1. Destructive method2. Eddy current method3. Ultrasonic method (*)4. None of the above is correct

157. A combination set is used as

1. Dipth, gauge, tri-square, scriber (*)2. Protractor, scriber, trisquare3. Center heat, protractor, scriber4. None of the above is correct

158. Mark the correct statement regarding the hardness tester

1. Brinell system uses diamond point2. Vikers uses round ball3. Above are correct4. None of the above is correct (*)

159. In nickel cadmium battery

1. During discharging, the current flows the negative pole to positive plate & oxygen atoms are driven out from the positive plate (*)

2. Electrical leakage is measured by millimeter between cell & casting


160. Hydrogen is given off during

1. All stages of LAB servicing2. Over charging of Ni-cd (*)3. Both 1 & 2 are correct4. None of the above are correct

161. Dies are used to cut

1. Internal threads of a nut2. External threads of a nut (*)

162. In a capacitor



1. Capacity depends on separation of plates & measured in farade

2. Capacity depends on area of plates & measured in farade

3. Capacity depends on nature of dielectric material


163. Relation between volt, ampere & weber is given by

1. Amp / volt2 = weber2. Amp volt = weber3. Volt / amp = weber4. None of the above is correct (*)

164. Mooring is the process in which

1. Head of the a/c is in prevailing wind whenever possible

2. Choke all wheels fore & aft3. Tie down the point on aircraft4. All of the above is correct (*)

165. Which statement is correct relating to swaging

1. If the diameter of fitting is too large, it has been over swaged

2. If the diameter of fitting is too small, it has been under swaged

3. If the diameter of fitting is too small, it has been over swaged & cable fitting must be rejected (*)


166. How will you convert a galvanometer in voltmeter

1. By connecting a high resistance in series with galvanometer (*)

167. Zener diode

1. Has high forward voltage rating2. Has negative resistance3. Has a sharp breakdown of low reverse

voltage (*)4. Used as amplifier

168. In a dye penetrant test before applying developer, what shall be done

1. Dye should be completely flushed out2. Only excessive dye should be removed3. The rinsing operation is completely

carried out 4. Both 2 & 3 are correct (*)

169. Which is the correct statement regarding heat treatment of Al-alloy

1. Longer soaking time & lower cooling rate result in greater softening (*)

2. Longer soaking time & higher cooling rate result in greater softening

3. Soaking time should be minimum4. None of the above is correct

170. If a magnet is dropped through a current carrying coil, it will fall with

1. Uniform acceleration equal to – g2. Uniform acceleration less than – g3. Non – uniform acceleration more than –

g4. Non uniform acceleration less than – g

(*)

171. Type of heat treatment of component depends on

1. Proper used2. Composition of alloying element (*)3. Cold work is done4. All of the above is correct

172. In annealing, greater softening can be achieved, if

1. Cooling rate is very low, & it is cold in furnace

2. Heating just above the upper critical point

3. Both 1 & 2 are correct (*)4. None of the above are correct

173. Transfer metal from one object to another by chemical & electrical means is done to

1. Protect base metal against corrosion & wear

2. Increase the dimension of a part3. Protect base metal against reaction4. All of the above is correct (*)

174. The circular pitch (p) of a gear is

1. Point where the pitch circle of two meshing gears touch

2. Diameter of pitch circle3. Thread per inch of pitch circle4. None of the above is correct (distance

from the one tooth to the center of next consecutive tooth measured on the pitch circle) (*)



175. Corrosion on Al-alloy is visible in the form of

1. Powdery form (white) (*)2. Grey spot3. Pitting4. Shining spark around the sport

176. The hook spanner is used for

1. Round nut having slot at internal (*)2. Square nut having slot at internal3. Hexagonal nut having slot at internal4. All of the above is correct

177. Aviation snips are used for cutting

1. Steel sheets2. Al-sheets (Heat Treated) (*)3. Hard material4. Soft material

178. The sensitivity of voltmeter is expressed in

1. Ohm2. Watt3. Emf4. 1/Amperes (*)

179. In inspection of bolt holes for pits & cracks is carried out

1. Before starting reaming2. After finishing reaming3. Before & after starting reaming (*)4. Done

180. In coolers or radiators where operating temperature is high soldering is not done but

1. Soldering can be done with approved flux

2. Inert gas welding3. Seam welding (*)4. Spot welding

181. The function of flux in brazing operation is to

1. Minimize oxidation (*)2. To break the surface tension of filling

material3. To flow filler material all round

182. Cracks in thick material welding can be checked by

1. Eddy current2. Dye penetrant3. Ultrasonic (*)

183. Heat, treatment of Non Ferrous Alloy is carried out by

1. Solution heat treatment2. Solution & precipitation T3. Age hardening4. All of the above is correct (*)

184. To change the fire in case of only one tire, the jack should be used

1. To just clear the tire from ground2. Hydraulic jack (single base jack)3. Chockes used with remaining wheel4. All of the above is correct (*)


1. The diametrical pitch & pitch diameter in a spur gear are same

2. If the diametrical pitch (DP) is given, you can find out the addendum (*)

3. If we divide DP by PD, we can get size of teeth

4. If the DP is given, you can not find out the addendum

186. A charge is moving along magnetic lines of force

1. If force will always act2. No force will act (*)3. May act or may not act4. None of the above is correct

187. Weld decay can be prevented by

1. Presence of titanium & niobium2. Quick heating3. Low temperature (*)4. All of the above is correct

188. The size of the cold chisel is determined by

1. Length of cutting edge2. Weight3. Width of cutting edge (*)4. None of the above is correct

189. The term associated with worm gear is

1. Throat2. Throat radius



3. Pitch4. Both 1 & 2 are correct

190. Temperature of work in a furnace can be measured by

1. Thermistor2. Pyrometer3. Color of work4. Thermocouple

191. For reaming holes should be under size

1. About 0.003" to 0.007" (*)2. About 0.007" to 0.010"3. Not necessary4. None of these

192. Convert 29 into binary system

1. 111012 (*)2. 101112

3. 110112

4. None of these

193. The radiographic inspection

1. Low wave length signal travel with velocity of light (*)

2. High wave length signal travel with velocity of light

194. In ATA 100 systems marking on the cable as per

1. Prefix & strefix2. Prefix & suffix (*)3. Number & letter

195. In an alto meter if there is absence of barometer is pressure, the pitot line is checked by

1. Vacuum chamber (*)2. Micrometer3. Vacuum Gauge

196. In pitot static system the static vent to of the flat plate tube any where in the a/c structure to prevent

1. Position error (*)2. Instrument error3. Protection against ice formation4. Both 1 & 3 are correct

197. The purpose of annealing is to

1. Soften the metal

2. Releave internal stress3. Both 1 & 2 are correct (*)4. None of these

198. The given tool is used for

1. Counter sinking2. Counter boring3. Drilling4. Any one of the above

199. Aviation ship is used for cutting:

1. Heat treated Al-alloy & stainless steel (*)2. Cu & its alloy3. Any soft metal4. All the above

200. This micrometer reading is showing:

1. Positive zero error2. Negative zero error3. No error4. None of these

201. The given reading shown

1. Positive zero error2. Negative zero error3. No error4. None of these

202. In silver soldering the temperature ranges between

1. 200C – 400C2. 400C – 600C3. 505C – 805C (*)4. 800C - 1000C

203. The ASI instrument consists of

1. One capsule2. Two set of capsules3. Three set of aneroid capsules4. There is no aneroid used is A.S.I. (*)

204. Hydrogen gas emits in the battery during servicing

1. During the process of charging2. Is Ni-cd battery when charging is

completed (*)3. When battery is over charged4. When connection on their terminal is

versed

205. A screw having no head flush with the structure can be turned by



1. Allean key (*)2. Screw extractor3. Simple screw driver4. Both 1 if have hex grove head & 2

206. As per figure it is

1. Sector gear2. As a & when used with external gear – it

gives the intermittent rotary motion3. Spur gear having few teeth broken4. Both 1 & 2 are correct

207. In oxyacetylene welding to extinguish the flame it is good practice to

1. First close oxygen & then acetylene regulator

2. First close acetylene & then oxygen regulator (*)

3. Close oxygen & acetylene regulators at a time

4. None of these

208. For welding cracks which type of joints should be preferred

1. Butt joining (*)2. Lap joining3. Edge joining4. None of these

209. In brazing which type of flame is used

1. Carburizing2. Neutral (*)3. Oxidizing4. Any one can be used

210. The given tool is used for making spot facing to seal the washer, nut bolt heat is

1. Counter sink2. Counter bore (*)3. Reamer4. Any one of them

211. The extended round portion which is indicated by letter 'A' in the above figure is known as

1. Pilot2. Straightner3. Guide4. All the above are wrong

212. For making neat & clean welding

1. After welding remove the excess metal with file

2. The filler material should be properly filled & evenly spaced

3. Fill the gap with Cu of brass4. All are wrong (*)

213. The thermo-plastic material can be

1. Harden after cooling & soften after heating

2. Harden after cooling but can not be soften after heating

3. Used for making wind shield4. Both 1 & 3 are correct (*)

214. Mg-alloy has no more used in a/c because

1. Suspectable to corrosion2. Chances of cracking3. Highly resistance to corrosion4. Both 1 & 2 are correct (*)

215. Rockwell hardness test is carried on specimen to:

1. Measure depth2. Measure resistance to penetration3. Both 1 & 2 are correct (*)4. Measure the diameter of impression

216. In oxyacetylene, the amount of oxygen & acetylene gases are in equal proportion, as indicated in figure, is the:

1. Neutral flame2. Oxidizing flame3. Reducing flame4. No flame will be – produced in this

manner

217. Triode value consists of

1. Heater, cathode, plate & meshing wire control (gird) between plate cathode (*)

2. Heater, cathode & plate3. Heater, cathode, control grid, screen,

grid & plate4. Heater, cathode, control grid, screen

suppressor grid & plate

218. For converting galvanometer into voltmeter connect

1. High resistance wire in series with meter for increase range (*)

2. Low resistance wire in series with meter



3. High resistance wire in parallel with meter

4. Low resistance wire in parallel with meter

219. Inductance depends on

1. No. of turns of the coil2. Core material of the coil3. Cross – sectional area4. All the above are correct (*)

220. Transformer is an electrical device with is used

1. For carrying high voltage to long distance (*)

2. In radio set3. Both 1 & 2 are correct4. None of these

221. In silicon control rectifier, there is

1. Three junction & 3 terminal (*)2. Two terminals are forward blased & two

are reversed blased3. Four junction4. None of these

222. This figure indicates

1. Delta connection alternator2. Three phase alternator3. Wire connection alternator4. Both 1 & 2 are correct

223. The given figure indicating

1. Porosity2. Pitting3. Tight crack4. Partially welded lap or tight crack

224. The drill size diameter can be classified satisfactory

1. 1 to 802. A to Z3. Both 1 & 2 are correct (*)4. None of the above

225. Coating of Al-alloy by a layer of pure Al is called

1. Alclad or pureclad (*)2. Alodizing3. Anodizing4. All are wrong

226. For changing the direction from linear to reciprocating motion

1. Rack is used with another spur gear (*)2. Rack is used with another rack3. Sector gear is used with external gear4. Both 1 & 3 are correct

227. Elastic stop jut should not be used where

1. Temperature is very low2. Temperature is higher than 250F (*)3. Vibration is very high

228. Step up transformers are characterized by

1. High voltage & low current in secondary (*)

2. High current & low voltage in secondary3. High current & low voltage in primary4. High voltage & low current in primary

229. Inductive reactance

1. Directly proportional to the frequency of inductance (*)

2. Inversely proportional to the frequency of inductance

230. The amount of electricity a capacitor can store is increased

1. Decreasing the area of the plate2. Decreasing the distance between the

plates (*)3. Increasing the distance between the

plates4. Selecting the low value of dielectric

constant

231. Main memory unit of computer

1. Stores bulk of data & instructions (*)2. Stores small amount of data &

instructions3. Performs air thematic4. Supervise the working of all the units.

232. The capability of the computer system to take logical decisions helps it in

1. Making faster calculations (*)2. Storing huge amount of data3. Decision making4. None of these



233. The unit of computer performing calculations is

1. Input unit2. Memory3. Output unit4. ALU (Arithmetic Logic Unit) (*)

234. The basic arithmetic operation performed by a computer is

1. Addition (*)2. Subtraction3. Multiplication4. Division

235. A finite sequence of steps needed to solve a problem is called

1. A process (*)2. A method of solution3. An algorithm4. A flowchart

236. In computing basic control structure always has

1. One entry & two exit points2. Two entry & one exit points3. One entry & one exit points (*)4. Any number of entry & exit points

237. Reverse riveting is sued where

1. A heavier gun should be used2. The gun should be opened up3. There is no room for revet gun4. All the above are correct

238. Type of Hi-shear pin shown in the sketch is known as

1. Dowel pin (*)2. Tapped pin3. Special cam4. None of the above is correct

239. While riveting if the damage shown in the sketch takes place, it is known as

1. Damaged place due to riveting tool (*)2. Cracked head due to hard material3. Rivet tight & plates bulged4. None of the above is correct

240. Rivet hole can be located by

1. Punching pilot holes2. Using of a template

3. Using a hole finder4. All the above are correct (*)

241. A, B & C of the turnbuckle assembly indicates

1. Cable eye, battle abdpin eye respectively

2. Fork, barrel & fork respectively3. Cable eye, thimble & fork respectively4. Fork, body & pin respectively

242. Tapping screws shown in the sketch A, B & C are

1. Counter sunk oval, truss & Philips2. Counter sunk oval, round head & Philips3. Counter sunk, round & slotted4. Both 1 & 2 are correct

243. Mark the correct statement, A bolt marked with a cross inside a triangle on its head is

1. Al. alloy both with close tolerance2. NAS close tolerance3. Corrosion resistant AN standard steel

both4. AN steel both

244. Bolt AN6-10 indicates

1. Length 3/16" & diameter ½"2. Diameter 3/8" & Length 5/4" (Nickel

Steel) (*)

245. Purpose of heat treating titanium is

1. Relief of stress2. Hardening to improve strength3. 1 & 2 & also to provide maximum

ductility for subsequent cold working4. All of the above are correct (*)

246. Channels, angles, T-sections can be made by the process known as

1. Rolling2. Extruding (*)3. Forging4. Hammering

247. For gas welding, while lighting the blow pipe, if flash back occurs, the cause may be due to

1. Regulators are not set to correct pressure (*)



2. Flow of gas is not ensured before lighting takes place

3. Both 1 & 2 are correct & over heating4. All use of spark lighter

248. When certain natural crystal is subjected to

1. Vibration sound beam, an altering current is produced

2. Mechanical stress, an electric field it produced (*)

3. Application of voltage, mechanical stress is produced

4. All the above are correct & also in case of vibration, the frequency of vibration depends on the thickness of the crystal.

249. Delamination can be detected by which method

1. Ultrasonic (*)2. Eddy current3. Dye penetrant4. Magnetic Particle

250. Zinc chloride is the best flux to sue soldering

1. Wrought iron, steel or stainless steel (*)2. Cast iron, nickel, lead3. Monel metal, galvanized iron4. All above are correct

251. Anneanlaing is the process that

1. Makes the metal soft2. Relieves the internal strain3. That lowers the strength of the metal4. Both 1 & 3 are correct (*)

252. T4 & W for alluminium alloy indicates

1. Solution heat treated & quenched but not aged (*)

2. Only solution heat treated3. Precipitation heat treated4. Solution heat treated & artificially aged

253. Scattered dot when viewed under ultra violet radiation indicates

1. Fine porosity2. Gross porosity3. Pitting4. Both 1 & 3 are correct (*)

254. If a damp flux is used while welding with oxy-acetylene flame, then it will cause

1. Porosity (*)2. Lack of penetration3. Craters4. Channeling

255. Which treatment process of metal produces a hard & wear resistant surface area with strong & tough in core

1. Case hardening (*)2. Tempering3. Annealing4. Normalizing

256. The diametrical pitch of a gear is

1. An imaginary circle passing through the points at which meshing of teeth takes place

2. The diameter of the pitch circle3. The number of teeth per inch of pitch

diameter (*)4. None of the above is correct

257. In connection with square thread, mark the correct statement

1. The width & depth of the thread are equal to the space between threads

2. It is very strong3. Accurate machining of this thread is

difficult4. All of the above are correct (*)

258. While drilling a hole, of the finished hole ahs a rough surface, the cause is

1. Dull drill was used2. The drill penetrated the work very slowly

& become very hot while in operation3. The drill hole was made very rapidly4. Both 1 & 2 are correct (*)

259. Length of hackshaw blade is

1. Distance from the centre of one hole to the center of the another hole of other end (*)

2. Total length over which teeth are spreaded

3. Length from one end to the other end4. All of the above are wrong

260. Micrometer shadow is

1. Shadow of the thimble (*)2. Shadow of he sleeve



3. Shadow of the spindle4. None of the above

261. Most accurate method of classifying drill size is

1. 1/16" to 12. 1/64" to 11"3. A to Z4. No. 80 to No. 1 (*)

262. To ream a hole, the hole must be drilled

1. 0.001" to 0.007" undersize2. Same size as given3. 0.003" to 0.007" undersize (*)

263. Flux density is measured in tesla – weber/m2 =

1. Gauss2. Farad3. Ampere4. Hennery

264. Altimeter in absence of manometer may be checked by

1. Vacuum gauge (*)2. Vacuum chamber3. Micromanometer4. All of the above

265. Zenor diode is used

1. As voltage regulator (*)2. To prevent spikes3. Both 1 & 2 are correct

266. Binary expression is known as

1. Bit (*)2. Byte3. None of the above are correct

267. Base of NPN transistor is

1. N type semiconductor2. P type (*)3. N-P diode4. P-N diode

268. Bolt without any specification while using

1. Should be cleaned & degreased thoroughly (*)

2. Should be greased on the thread

3. Should be greased thoroughly

269. Turn buckle is in safety minimum

1. Not more than one thread is exposed outside barrel

2. Half number of threads are inside the barrel

3. All the threads are inside the barrel4. Not more than 3 threads are exposed (*)

270. Trammel is used

1. To draw large circle (*)2. To draw large square3. To draw large rectangle4. To draw large pentagon

271. The line used to show an edge which is not visible is a

1. Position line2. Phantom line3. Hidden line (*)4. Broken line

272. A drawing in which all the parts are brought together as an

1. Working drawing2. Detail drawing3. Assembly drawing4. Installation drawing (*)

September – 1994

1. The most commonly used symbols for electromagnetic flow detection

1. UFD2. MFD (*)3. PFD4. EFD

2. In oxyacetelene welding it is better practice while shutting off the flame

1. Shut off oxygen first2. Shut off acytelene first (*)3. Turn off the regulator4. Turning off simultanelously

3. The silver soldeny metal melts at

1. 200 – 400 degree cent2. 500 – 850 degree cent (*)3. 1000 – 1600 degree cent

4.A crack may be repaired by



1. Butt welding (*)2. Spot welding3. Lap welding4. Edge welding

5.Annealing is the process

1. Makes a metal soft2. Relives the internal strain3. Toughen the metal4. Both 1 & 2 are correct (*)

6.T & w are the symbols utilized for heat treatment of Al-alloy sheet indicates

1. Solution heat treated only2. Solution heat treated & quenched but

not aged (*)3. Precipitation heat treated4. Solution heat treated & artificially aged

7.Rockwell hardness tester

1. Measures resistance to penetration2. Measures the diameter of the

impression3. Measures depth of impression4. Both 1 & 3 are correct (*)

8.Which is true in relation to magnesium alloy

1. It is most susceptible metal to corrosion2. It has get high resistance to corrosion

quality & can be heat treated3. It is the lightest metal used in the a/c

structure4. Both 1 & 3 are correct (*)

9.Galvanic corrosion is

1. Dissimilar metal corrosion (*)

10. Decimal 29 is equivalent to binary number

1. 11101 (*)2. 101103. 111104. 10101

11. SCR (Silicon Control Rectifier) has

1. 2 terminals2. 2 terminals are forward biased & 1

terminal are / is reverse (*)3. 3 terminals4. None of the above

12. A triode consists of

1. A plate, grid & a heater2. A plate, cathode & a heater3. Plate, screen & a heater4. Plate, cathode, heater & wire screen

between the plate & cathode (*)

13. Zenor diode is used

1. To regulate voltage (*)2. Controls the spikes3. Both 1 & 3

14. Diode, triode & transistors

1. Obey Ohm's Law2. Does not obey ohm's law (*)

15. Taking all the factors into consideration the most commonly used metal as electrical conducting

1. Aluminium (*)2. Copper3. Silver4. Iron

16. In gear system, a driver & driven on the shaft to get the same direction of rotation

1. Bevel gear is used2. Internal & external gear combination is

used3. As in (1) & no mechanical advantage is

obtained4. None of the above is correct (*)

17. In regular interval, to calibrate a micrometer where you carried out

1. In normal environment & controlled temperature (*)

2. In air conditioned room but does not proof

3. A room is calibrated upto 20-30 microns, but not air conditioned

4. A room is calibrated upto100-150 microns, & also air conditioned

18. To bring the sheet together to get air tight joint, we use

1. Draw set2. Cleco fastener (*)3. Aligning camp4. None of the above is correct

19. Choose correct statement 115 CORRECT ANSWER IS MARKED * AT END


1. Philips screw – driver is blunt at end (*)2. Read & prince screw driver is blunt on

end3. Both are interchangeable4. All of the above is correct

20. To avoid vibrating stress in tube lines

1. No bend is done2. Two bend is done3. Atleast one bend is done (*)4. Preferably no bend is done, & if bend is

done, it will be less than 45

21. Dzus fastener consists of

1. Stud, washer & receptacle2. Stud, grommet & receptacle (*)3. As in (2) & grommet is made of spring4. None of the above is correct

22. Air drill in aviation industry in preferred to electric motors drill.

1. No other equipment is required2. It is available in various shape, sizes,

running speed, drilling head angle (*)3. High initial cost & less maintenance4. Both 1 & 2 are correct

23. Double flaring is

1. Provide smooth & concentric surface2. As in (1) & resistance to shearing effect

of torque3. As in (2) & generally used in a/c (*)4. As in (3) & diameter of tube is reduced.

24. A galvanometer may be converted to a voltameter by connecting

1. Low resistance coil in parallel with meter2. High resistance coil in parallel with

meter3. High resistance coil in series with meter

to increase range (*)4. Low resistance coil in series with meter

25. In ATA coding system the size & type of the electrical cables / wires in a/c are given by

1. Prefix & suffix2. Side by side3. Numbers & Letters (*)4. None of the above is correct

26. Hydrogen gas is given up

1. Entire servicing of Ni-cd battery2. When lead acid battery gets over

charged3. Towards the end of the charging of Ni-

cd battery (*)4. Both 2 & 3 are correct

27. The strength of the electromagnet is determined by

1. No. of turns of the coil2. Strength of the magnet 3. Speed of rotation of the magnet4. All of the above (*)

28. ½ - 13 NC – B indicates

1. Pitch diameter ½"2. B – external thread3. 13 NC – indicates 13 TPI & have

national form4. All of the above is correct (*)

29. A vernier caliper has least count 0.02 cm & have a negative error – 0.02 mm reading on main scale is 0.48 & 6th

division of vernier scale coincide with main scale. The reading is

1. 0.485 cm2. 0.488 cm3. 0.062 mm (*)4. None of the above is correct

30. Counter boring & spot facing is

1. Having same operation2. Counter boring is done for nut3. Sport facing is the operation of making

flat circular surface around hole (*)4. None of the above is correct

DGCA Questions

1.Aviation snips are used on

1. Heat treated Al alloy sheet & Stainless Steel (*)

2. Fibre3. Sheet Steel4. All of the above is correct

2.Solder used for electrical connection has the M & range

1. 100 - 200C (*)2. 100 - 3000C3. 300 - 6000C



4. 200 - 3000C

3.Helical gears used for

1. Transmit motion to shaft at an angle2. Transmit motion to shaft which is are

perpendicular together3. To carry larger loads (*)4. None of the above is correct

4.The best conductor available considering all factors in a/c use is

1. Copper2. Alluminium (*)3. Brass4. Silver

5.The binary equivalent of 29 is

1. 11101 (*)2. 101013. 100114. 11111

6.An altimeter consists of

1. Two aneroid capsules2. Pressure setting knob for adjusting

barometric pressure3. Three aneroid capsules4. All the above are correct (*)

7.Most headless set screws are turned by

1. Screw driver2. Philips screw driver3. Internal screw driver4. Allen wrench (*)

8.SCR is

1. Four junction diode2. Three junction diode (*)3. Two junction forward based with one

reversed biased4. Plate, cathode, heater & fine mesh of

wire between plate & cathode

9.Doubller plate is

1. Same size2. Double the thickness3. Just half the thickness4. None of the above is correct (*)

10. Ballast is used to balance the a/c

1. Located as near as to CG

2. Is minimum weight & places as far aft or as far forward as possible to bring the CG within limits using a minimum amount of wt. (*)

3. Preferable permanent ballast4. Preferable temporary ballast

11. Electric weighing machine

1. Switched – ON before minutes2. Switched – ON just prior to weighing so

that equipment is not heated (*)3. As in (1) & circuit is provided to get

stabilized4. All are correct

12. Static wick is mentioned in the _______ chapter of the maintenance manual

1. 212. 23 (*)3. 244. 32

13. Altimeter is checked by when barometer is not available

1. Micro manometer2. Vacuum chamber (*)

14. Static vents in pitot static system are located with

1. Free at air stream (*)2. To eliminate ice formation3. 1 & 2 are correct4. Flexible

15. X-ray used in NDT inspection

1. Have short wave length high penetrating power

2. Have long wave length low penetrating power

16. To repair a crack, the join to be formed

1. Lap joint2. Butt joint (*)3. Bee joint4. Corner joint

17. A transistor is

1. Amply the low input signal to high output signal (*)

2. Used as a rectifier3. Used in transducer set



4. 1 & 2 are correct

18. Purpose of point in either straight or twisted drill

1. To provide the flow of the cutting fluid to the cutting edges

2. For clip removal3. To provide lip cutting edges (*)4. All of the above

19. Clevis bolt is used for

1. Shear loads only (*)2. Tensile loads only3. As a pin in control systems4. 1 & 3 are correct

20. In a capacitor the voltage rating decreases with increase in

1. Dielectric strength2. Thickness of dielectric (*)3. Frequency4. Area of the plates

21. American close tolerance nut is used for

1. Machine surfaces2. Heavy forged structures3. Tight fit assemblies (*)4. 2 & 3 are correct

22. The zener diode

1. Is used as rectified2. Is used for voltage regulation (*)

23. The most accurate system for drill size is

1. Fraction (1/16" – 31/2")2. 1/64" – 11/2"3. A to Z4. No. 80 to No. 1 (*)

24. In a vernier scale, 24 division are equal to 25 division of vernier so 1 cm of main scale is divided 20 equal parts, find the least count

1. 0.001 cm2. 0.002 cm (*)3. 0.002 mm4. 0.001 mm

25. In a vernier micrometer of part of main scale is divided into 10 of scale,

the main scale has the graduations of 1 mm find the least count.

1. 0.01 cm (*)2. 0.001 cm3. 0.09 mm4. 0.009 cm

26. The component shown as

1. Flange2. Scupling3. Spacer4. 1 & 2

27. Hydrogen is given off

1. During all stages of battery servicing2. When battery is over heated in Ni-cd

battery (*)3. During charging operation of the battery4. During discharging operation of the

battery

28. Magnesium is

1. Susceptible is corrosion2. Corrosion precisiant & light weight3. Has tendency in crack4. 1 & 3 are correct (*)

29. When switch 'S' is open, voltmeter indicates 1.5 v & when closed indicates 1.35 v current is 1 amp what is the internal resistance of the battery.

1. Ohm2. 0.15 Ohm (*)3. 1.35 Ohm4. 1.50 Ohm

30. For most satisfactory plating on AGS & non steel materials

1. Nickel plating2. Cadmium plating (*)3. Zink plating4. Galvanizing

31. Rough surface of castings & bars etc removal, by an abrarive cutting tool is called

1. Grinding (*)2. Snagging3. Lapping4. Finishing



32. Replace a solid rivet with a hollow rivet we would check for

1. Material & compression strength2. Material & shear strength (*)3. Heat treatment4. Material & tensile strength

33. DTI indicator is

1. Eccentricity of a small levels in rotating shafts

2. To measure the dimension3. To check the depth of large parts4. All of the above is correct (*)

34. In hot oil & chalk methods the following can not be detected

1. Vertical cracks2. Horizontal cracks3. Wavy cracks4. Minute flows & tightly shut cracks (*)

35. The following washers are not used on the part which is exposed to air flow

1. Plain washer2. Special washer3. Lock washer (*)4. 1 & 2

36. How many types of fits according to American standards

1. Three2. Six3. Eight (*)4. Four

37. Structural screw will have

1. Same strength of the AN bolt (*)2. Half of strength of the AN bolt3. Sometimes less than half of strength of

the AN bolt4. Both 2 & 3 are correct

38. In different countries, the same rate battery was charged which gets more charged

1. 80 f, 1 hour2. 80 of, 1 hour3. 60 of, 30 minute4. 70 of, 45 minute (*)

39. BA british unified bolts & screws can be recognized by

1. Violet dye2. UNF stamping on the bolt3. Raised or recessed circles on the head

(*)4. All of the above is correct

40. In case of flouruscent die penetrant inspection, the developer used is

1. Dry powder2. Powder suspended in volatile liquid3. Powder suspended in water4. All of the above is correct (*)

41. Round heat rivet is

1. 430 (*)2. 4423. 4624. 456

42. Fretting corrosion effect

1. Thickness of the parts will be reduce (*)2. Parts get brittleness3. Toughness increase4. Fatigue strength of parts decreases

43. When selecting a rivet for replacement of a solid rivet, we observe for

1. Dissimilar action corrosion2. Shape of head (*)3. Length of rivet4. None of the above is correct

44. Fillet welding is

1. Edges joined perpendicularly by (*)2. Edges joined parallely by clambering3. Edges joined keeping the plates one

over the other parallely, one being horizontal

4. Clearance done at the edge of the gear teeth

45. American standard control cables are made of

1. Molybenium steel (*)2. Cast steel3. Stainless steel4. Brass

46. Regarding thermal runway which of the following is not correct

1. Imbalancing of cells 115 CORRECT ANSWER IS MARKED * AT END


2. Deep cell treatment3. Due to constant current more chances

for thermal runaway (*)4. Over heating of a cell

47. For any battery the charged without constant current conditions can be found while changing.

1. Specific gravity taken at interval of 30 min three consecutive redings should be same

2. Gassing will occur (*)3. Voltage stops rising4. 1 & 2 are correct

48. A 35 AH, 12 V battery is discharged according to the following rates which will give maximum capacity?

1. 10 hrs, discharge rate2. 15 hrs, discharge rate3. 20 hrs, discharge rate4. 5 hrs, discharge rate (*)

49. Structural screw will have

1. Same strength of the AN Bolt (*)2. Half of strength of the AN bolt3. Sometimes less than half of strength of

the AN bolt4. Both 2 & 3 are correct

50. Capacity in lead acid battery as determine by

1. Density of electrolyte (*)2. Plate area3. Internal resistance4. No. of cells

51. The motor with two different coils wound on difference sence, which can rotate in two direction is

1. Series 2. Shunt3. Compound (*)4. Differentially compound motor

52. The treatment of Magnesium, the following chemicals are used in

1. Electrolyte bath2. Potassium dischromate, sodium

chromate & zinc chloride (*)3. Ammonium cyanide, potassium cyanide

& zinc sulphate4. None of the above

53. Society of british aerospace has given rivet standard as

1. As (*)2. SP3. ACS4. MS

54. Is fastener dimensions are specified as

1. Diameter as 1/32 inches & length as 1/8 inches


3. Diameter as 1/16 inches & length as 1/8 inches (*)


55. Radio graphic inspection, which of the following waves are used

1. X-rays2. r – rays (Gamma Rays)3. Ultraviolet rays4. 1 & 2 are correct (*)

56. Dump fluid increases

1. Porosity (*)2. Lack of penetration3. Channel low4. Clarity of formation

57. Marking is done on constant barrel

1. To avoid miscalculations (*)2. More precise valued3. To create miscalculations4. None of the above

58. Black pitting & reddish brown corrosion occurs on

1. Corrosion resistant steel (*)2. Cast iron 3. Magnecium4. Aluminium

59. For getting high ampere hour capacity & high terminal voltage the plate of cells should be connected as

1. In series so that to get high internal resistance

2. In series so that to get low internal resistance (*)



3. In parallel so that to get low internal resistance

4. In parallel so that to get high internal resistance

60. The CP of bevel gear is

1. Tooth per inch2. The distance from the center of open

tooth to the center of next tooth measured on the pitch circle

3. The distance from the center of one tooth to the center of next tooth (*)

4. None of the above

61. The binary expression of 296 is

1. 1010111012. 100101000 (*)3. 1110011004. 110010111

62. The number of TPI is measured by

1. Screw pitch gauge (*)2. SWG3. Thickness gauge4. None of the above

63. The output of an OR gate will be given

1. When all inputs are energized2. When all the inputs are zero3. Any one of the input is energized4. 1 & 3 are correct (*)

64. Computer consists of

1. Printer, decoder, memory2. Input, Output, CPU (*)3. Input, Output, Printer4. None of the above

65. The decimal number for 10111011101 is

1. 15012. 15003. 14014. 1600

66. The drawing symbol

1. Fixed capacitor2. Variable capacitor3. Variable resistor4. Fixed resistor

67. O-rings are checked for internal cracks by

1. 4 power magnifying glass2. By rolling on inspection cone3. By rolling on inspection dowel4. All of the above (*)

68. Shop head of a rivet is

1. Formed by pneumatic hammer (*)2. Manufactured head3. Special rivet

69. Disposable load is

1. Fuel that can be thrown out of a/c during emergency conditions (*)

2. All persons & their belongings, fuel, oil that is used in the journey

3. Empty load & variable load4. Fuel & oil which is unusable

70. The stretch shows

1. Buttress thread2. ACME thread3. V-thread4. Square thread

71. The method used in temper steel depends upon

1. Type of steel2. Size of steel3. Density of steel4. All of the above (*)

72. The readings shown on the instruments is

1. 1.318"2. 1.314"3. 2.300"4. 3.150"

73. The computer hard disks & floppy disks are

1. Different in use2. Similar but hard disk can store more

than floppy disk (*)3. Similar but hard disk can store less than

floppy disk4. None of the above

74. The readings shows as

1. 2.500"2. 0.250"



3. 0.275"4. 0.200"

75. Bevel gears used for

1. Transmission of loads for between shafts to each other (*)

2. For variation of speed3. In speed reducers4. 1 & 3 are correct

76. The component shown is

1. Universal wrench2. Spanner French3. Open end wrench4. None of the above

77. The DP in a gear indicates

1. Number of teeth per inch2. Size of the gear teeth3. Both 1 & 2 are correct (*)4. None of the above

78. Barcol tester is used for

1. Steel2. Al-alloy3. Titanium4. As in 2 & copper (*)

79. Calculate the reading

1. 0.10012. 0.2503. 0.42504. 0.200

80. Identify the drawing symbols given below

1. Normal C.B., Push – pull C.B., Push – pull C.B.

2. Automatic C.B., Push C.B., Push – pull C.B.

3. Push-pull C.B., Automatic C.B., Normal C.B.

4. Automatic reset, push reset, push reset pull off

81. Memory of computer are

1. ROM, CPU, ALU2. ROM, RAM, PROM (*)3. ALC, ROM, RAM4. None of the above

82. Stress corrosion occurs mainly on

1. Magnesium alloys2. Aluminium alloys3. Stainless steel4. Both 2 & 3 are correct (*)

83. Purpose of using flux in welding in

1. To reduce oxidation2. To increase the bonding3. To provide flow to the molten metal4. All of the above are correct (*)

84. An optical instrument used to inspect the interior structure of a component is

1. Fibrescope2. Boroscope3. Endoscope4. All of the above (*)

85. The check interior surface condition of cylinders & surfaces, instrument used is

1. Boroscope2. Fibrescope3. Endoscope or introscope4. All of the above are correct (*)

86. Mark correct statement

1. A – radial load, B – radial load & thrust load

2. A – thrust load, B – radial load3. A & B – thrust load4. A & B – radial load

87. Reading is

1. 0.2572. 0.2703. Two hundredths of an inch4. Three hundredths of an inch

88. Radiography depends on

1. Size & shape2. X-ray3. Thickness of material4. All of the above are correct (*)

89. Calculate the reading

1. 0.25072. 2.5073. 0.42504. 1.200



90 Identify:

1. A & D are variable resistors & b & C are fixed resistors

2. A & C are fixed resistors & b & c are variable resistors

3. A & B are fixed resistors & b & d are variable resistors


91. Identify:

1. Potentiometer2. Resistor3. Auto transformer4. Iron transformer

92. In fluorescent dye penetrant test, the color of the light under which the part is inspected

1. Green colour in black light2. Green color in white light3. Ultra violet shining light (*)4. Red color in white light

93. Rockwell tester measures

1. Resistance to penetration (*)2. Diameter of impression3. Size of indentation4. None of the above

94. Cleaning of titanium surface

1. Steel, steel wool2. Iron scrapers3. Mild abrasive or hand polish with

aluminium (*)4. None of the above

95. PN junction is used as

1. Rectifier (*)2. Amplifier3. Oscillator4. None of the above

96. NPN transistor

1. Flow of electrons from emitter to collector (*)

2. Holes move from collector to emitter3. Flow of electrons from base to emitter4. Flow of electrons from emitter to base

97. In triode, grid

1. Controls the flow from plate to cathode (*)

2. Reduces space charge3. It increases emission of electrons from

cathode4. Prevents secondary emission

98. Aluminium alloys are welded with

1. Oxidizing flame2. Reducing flame3. Neutral flame (*)4. Reducing flame but first the flame is

neutral & then reduced

99. Brass & bronze are welded with

1. Oxidizing flame (*)2. Reducing3. Neutral flame4. Reducing flame but first the flame is


100. This tool is used for

1. For internal measurements2. Measuring hole diameter3. Outside measurements4. Both 1 & 2 are correct

101. In a 4 stroke engine the spark plug fires for every

1. 4 revolutions of crank shaft2. 2 revolutions of crank shaft (*)3. ½ revolution of crank shaft4. 360 degree revolution of crank shaft

102. If a wire having a resistance of 4 is stretched twice of its length given its

1. 1 2. 8 (*)3. 16 4. 4

103. 7 resistors of 20 are connected parallel & battery voltage is 2 volt the ammeter reads

1. 1/10 A2. 3/10 A3. 4/10 A4. 7/10 A (*)

104. Identification of titanium

1. Spark test2. Moistering & marking on glass3. Acid test



4. Both 1 & 2 are correct (*)

105. Inhealed metal is Annealed

1. Is soft2. Relieved internal stress3. Low strength4. All of the above is correct (*)

106. Reading of inside micrometer

1. 0.5272. 0.4253. 0.4754. 2.015

107. Identical insulated wire coils are hung from air so that they are racing each other & supplied with same direction A.C.

1. Anti clockwise rotation2. Both are repelled3. Both are attracted to each other (*)4. Clockwise rotation

108. Which of the following has negative co-efficient of resistance

1. Thermistor (*)2. Transistor3. Semiconductor4. Resistor

109. In a given figure, what may be the cause of fault for the installation of rivet

1. Greater allowance on the formal head2. Snap not regular to the head3. Bucking bar not in position4. None of the aboe is correct

110. The type of corrosion which occurs when two making surfaces, normally at rest with respect to one another, are subject slight relative motion is know as?

1. Stress corrosion2. Fretting corrosion (*)3. Crevice corrosion4. Inter granular corrosion

111. The letter : 0 in heat treatment process represents the following condition

1. Strain hardened

2. Annealed (*)3. Solution heat treated4. None of the above is correct

112. When an aircraft catches fire, (made of aluminium) conductivity & resistivity of aluminium respectively

1. Increases decreases2. Decreases increases3. Both will increases4. Both will decreases (*)

113. The rivet head indicates the material

1. 20242. 211713. Monel (Nickel copper alloy)4. None of the above is correct

114. The abbreviation "Unix" used in computer indicates:

1. A new operating system2. Operating system other than MS-DOS

(Microsoft Disk Operating System)3. PC – AT computer may have "Unix"

operating system in addition of MS-DOS.


115. The most sophisticated computer is

1. Micro computer2. First generation computer3. Super computer (*)4. None of the above is correct

116. Which is principal load carrying member in composite materials

1. Fabric (*)2. Matrix3. Resin4. None of the above

117. The size range of an allen wrench is

1. 3/64 to ½"2. 1/64 to ½"3. 3/64 to 1/8"4. 1/64 to 1/8"

118. The function nut on an a/c landing gear requires a torque of 100 inch pounds. To reach the nut, a 3" straight adapter must be used on an 15" torque wrench. How many inch pound will be indicated on the torque



wrench when the required torque of the nut is reached?

1. 1002. 83.3 (*)3. 0.804. 115.6

119. Carbon steel is

1. Strongly magnetic & shows slow chemical reaction with nitric acid test

2. Non magnetic & non action with HN3. Strongly magnetic & rapid action with

HNO3 test4. Slightly magnetic & slow chemical

reaction with HNO3 test

120. In a vernier micrometer, 9 part of main scale is divided into 10 parts of vernier scale, the main scale has graduation of 1 mm. Find the least count

1. 0.01 cm (*)2. 0.001 cm3. 0.001 mm4. 0.009 mm

121. The scales on the surface of a heat treatment part is removed by

1. Using scrapper2. Sand blasting (*)3. Dipping in any solvent4. All of the above

122. What is the difference between quantity & quality of x-ray in radiographic inspection:

1. Three is no meaning of quantity & quality means the penetrating power of a beam of radiation (*)

2. Quantity is related with penetrating power of x-ray & quality is related with frequency of x-ray

3. The quantity refers to the amount of radiation penetrating the specimen which affects the darkness of a radiograph & quality refers to the penetrating power of a beam


123. Artificially aged & then cold worked is represented by

1. T1

2. T7

3. T10 (*)


124. Which of the following is used as filler material

1. Flox2. Chopped fibers3. Both 1 & 2 (*)4. None of the above is correct

125. During welding, the welding torch should be kept

1. Into the molten metal2. Above the colten metal3. Depending on welding position &

processes (*)4. All the above is correct

126. Two wires each 1 meter long are kept at a distance of 0.02 mt apart if 1 amp current is flowing through each wire, then force acting on the wire will be

1. Attractive if the direction of the current flowing through wires is same

2. Attractive if the direction of current will opposite

3. Repulsive if direction of current will be reverse


127. The symbol represents

1. SCR, rehostat respectively2. Rehostat, thyristor respectively3. Resistor, FET (field effect transistor)

respectively4. None of the above is correct

128. In which condition the bridge is said to be balanced

1. R1 is increased, R2 is decreased2. R3 is increased, R4 is decreased3. R2 is increased, R3 is decreased

129. Which one of the following statement is true?

1. In Ni-cd battery, charging & discharging can be done rapidly due to low internal resistance. (*)

130. In case of a battery, which of the following quantity can be stored

1. Energy (*)2. Charge3. Curr3ent




131. In a dry cell battery

1. Carbon electrode is placed centrally surrounded by aluminium chloride electrolyte (*)

2. Zinc chloride is placed centrally surrounded by aluminium chloride electrolyte

3. Carbon electrode is placed centrally surrounded by zinc chloride electrolyte


132. The identical insulated wire coils are hung from air so that they are facing each other & supplied with same direction.

1. Both are attracted to each other (*)2. Both are repelled3. Clockwise rotation4. Anti clockwise rotation

133. Hot water quenching

1. Minimizes distortion & ________ cracking (*)

2. Ensures maximum resistance to corrosion

3. Minimizes distortion but results in cracking


134. Spherical roller bearing take

1. Take only radial loads2. Take only axial loads3. Accept a minor degree of misalignment

between opposite bearing4. None of the above is correct (*)

135. Screw differ from bolt is their threads a fit also

1. A/c bolts have generally class 3 fit & screw class 2 fit (*)

2. A/c bolts have generally class 1 fit3. A/c bolts have generally class fir &

screw class 3 fit4. A/c screw & bolts have class 4 fit only

136. Drill machine can do operations of

1. Drilling (*)2. Counter sinking3. Lapping4. All the above is correct

137. Which statement concerning avdel rivet is correct

1. Avdel rivet is supplied in pre-lubricated condition

2. The avdel rivet is coded by length & diameter

3. The avdel rivets must be washed in solvent before use

4. 1 & 2 are correct (*)

138. CPU contains

1. I/P & O/P Unit2. Memory Unit3. ALU & CU (*)4. All above

139. The speed of computer is in

1. Milliseconds2. Micro second3. Second4. None of the above is correct (*)

140. Algorithm has the following properties

1. Definiteness & finiteness2. May not be finite3. None (*)

141. The computer executes

1. One information at a time (*)2. Two information at a time3. Millions of information at a time4. None of the above is correct

142. Crevice corrosion

1. Is an electrochemical attack2. Takes place when metals are in close

contact with plastic (*)3. Both 1 & 2 true4. None of the above is correct

143. Main constituent of stainless steel is

1. Cr (*)2. Ni3. Carbon4. None of the above is correct

144. Which statement is true regarding carbon & Kevlar fibres

1. Kalvar is a type of Aramid fiber, usually, of yellow color, having excellent tensile



strength & remarkable flexibility but difficult to cut & drill

2. Carbon fiber is a black fiber, very strong & still. It is stronger than Kevlar in compression but more brittle

3. Both 1 & 2 are true (*)4. None of the above is true

145. For checking zero error in a micrometer having arrange of 0 – 1"

1. A cylinder of 1" dia should be kept between the faces of anvil & spindle

2. The faces of anvil & spindle will be brought in close contact (*)

3. Zero mark on the thimble is exactly inline with the datum line on it sleeve

4. The frame must be held with left hand & thimble rotated with right hand.

146. A ratchet mechanism is incorporated in micrometer to

1. To apply correct pr.2. To prevent damage to the instrument3. To have pre-set feel to prevent over

torque (*)4. To reduce wear on the measuring faces

147. Three point micrometer

1. Measures very accurately with LC of 0.001"

2. Measures very accurately with LC of 0.002"

3. Is used for all types of Measurement4. None of the above is correct (*)

148. Hawks bill ship are used to

1. Cut inside of curves / radii (*)2. Cut outside of curves3. Cut heavy sheet metal4. All of the above is correct

149. Included angle of BA thread id

1. 35 degrees2. 47.5 degrees (*)3. 33 degrees4. None of the above is correct

150. Be laminations in composite in a coin test gives

1. Dull sound (*)2. Perfect solid sound

151. Tappered 1 roller bearings take

1. Axial & radial load in one direction (*)2. Axial load only3. Axial & radial load in either direction

152. Spherodise annealing is applicable to

1. Low carbon steel (*)2. Medium & low carbon steel3. High carbon steel

153. For filling slots & key way use

1. Kniffile2. Square file3. 3 – square file4. Half round file

154. Convert into decimal 10111011101

1. 1501 (*)2. 15003. 14014. None of the above is correct

155. Rheostat has

1. 3 terminals2. 2 terminals (*)

156. In optical instrument used to inspect the interior structure of the components

1. Fibroscope2. Boroscope3. Indoscope4. All of the above is correct (*)

157. If the driven gear teeth ratio is 21:40 what will be the teeth of the driven gear

1. 30:502. 30:353. 40:554. 63:120

158. Universal gate is

1. AND & OR gate2. OR & NOR gate3. NOR & NAND gate (*)4. NAND gate

159. Which statement is incorrect

1. X-ray's reflected (*)2. It destroys living cells3. It produces heat4. None of the above is correct



160. LED concerns about

1. Crystals2. Reverse Bias3. Morelight ommited as temperature

increases4. Combination of holes & current (*)

161. Which is not usually done composite

1. Dyepenetant (*)2. X-ray3. Ultra sound method4. Radiography

162. The grip length of all line fasteners is given in

1. 1/100" (*)2. 1/1000"

163. Meuntz metal is a

1. Brass & is resistant to salt water (*)2. Is a bronze

164. Which is correct

1. A driven, clockwise2. B driver, clockwise (*)3. C driven, clockwise4. D driven, clockwise

165. In the absence (substitute) of Baron which composite hybrid may be used

1. Aramid + Carbon / Graphite (*)

Paper II (February – 1998)

1.The tool shown in figure is

1. Box – end wrench2. Double end offset wrench3. Flare nut wrench4. Combination wrench

2.Identify the following

1. Rheastal & sc diode2. Resistance & photo diode3. Rheastal & SCR4. None of the above is correct

3.The figure shows

1. Collect2. Tap

3. Die4. Chuck

4.The figure shows process of

1. Riveting with the riveting gun on rivet head

2. Bucking bar on the rivet3. Dimpling the rivet4. None of the above is correct

5.For threading a hole, the hole should be drilled

1. Approximately 0.003" to 0.007" undersize (*)

2. Approximately 0.003" to 0.007" oversize3. 0.007 undersize4. None of the above is correct

6.Secondary cell stores

1. Capacity2. Energy (*)3. Power4. Work

7.In a scale 39 division of main scale concides with 10 division of vernier & 1 division of main scale indicate 1 mm. 1 division of vernier scale indicates

1. 0.01 cm2. 0.01 mm3. 1 mm4. 0.001 cm

8.In a scale 24 main division is concide with 25 division of vernier scale & 1 division of main scale indicate 1 mm then 9 division of vernier scale indicates

1. 0.004 cm2. 0.001 mm3. 0.01 mm4. 0.01 cm

9.Force to be applied on file is backward direction

1. To remove the cutting chips of metal force is applied on file is forward direction for cutting

2. For saving the life of file3. More metal to be cut4. None of the above is correct (*)



10. Ceramic fibres are often used with

1. Modified polyester resin2. Exoxy resin3. Metal metrix (*)4. None of the above is correct

11. In nitric acid test, the material shows rapid action with greenish blue color, the material is

1. CRS2. Carbon steel3. Nickel (*)4. All of the above is correct

12. Highest compressive strength of composite is

1. Carbon / Graphite (*)2. Ceramic3. Baron4. Both 1 & 2 are correct

13. Which NDT cannot be used to test a 0.5 mm Al-steel

1. Magnetic particle inspection (*)2. Eddy current test3. X-ray4. None of the above is correct

14. In a transformer the primary has 200 turns & the secondary has 400 turns. If the supply of 28 v is given in primary then the secondary voltage is

1. 70 v2. 110 v3. 56 v(*)4. 24 v

15. Calipers are used for the purpose of

1. Measure inside diameter2. Measure outside diameter3. Measure distance between two surface4. All of the above is correct (*)

16. The flow chart symbol indicates

1. Activity2. Input3. Output4. Both 2 & 3 are correct

17. "O" or "A" indicates

1. Anhealed recrystallized (*)2. Quenched

3. Forged4. Both 1 & 2 are correct

18. With increase in temperature, resistance of cu

1. Increase (*)2. Decrease3. Infinite4. Same

19. If the plate is more +ve w.r.t. cathode, the electrons

1. Will start to flow toward plate (*)2. Will not start to flow toward plate3. Will start to flow toward plate but will

damage diode none4. None of the above is correct

20. Which of the NDT testing method is suitable for the inspection of most metal, plastic & ceramic surface defects

1. Eddy current2. Magnetic particle inspection3. Ultrasonic test (*)4. Dye penetrant method

21. How many of these factors are considered essential of knowledge for x-ray exposure

1. Processing of film2. Material thickness & density3. Exposure distance4. Film characteristics (*)

22. Which type of crack can be detected by magnetic particle inspection using either circular or longitudinal magnetization

1. 452. Longitudinal3. Transverse4. Sub-surface

23. Alclad is metal consists of

1. Al-alloy surface & pure Al-core2. Pure Al-surface & Al-alloy core (*)3. A homogenous mixture of pure N & N-

alloy4. All are correct (Multiple layer of Al-alloy

& pure n)

24. A fibre type self locking nut must not be used on a/c if bolt is



1. Under shear load2. Under tensile load3. Subjected to rotation (*)4. Subjected to vibration

25. A triode consists of

1. Plate, gird & a heater2. Plate, cathode & heater3. Cathode & a plate4. Plate, cathode, heater & a screen

between the plate & cathode (*)

26. Diode, triode & transistors

1. Obeys ohm's law2. Does not obey ohm's law3. Not a linear resistance4. Both 2 & 3 are correct (*)

27. Fibre glass sheet is used between Al & carbon / graphite joint to

1. Protect it from corrosion (*)2. Used as core metal3. Provide better strength4. All are correct


1. The diametrical pitch & pitch diameter in a spur gear are same

2. If the diametrical pitch (DP) is given, you can find out the addendum (*)

3. If we divide DP by PD, we can get size of teeth

4. If the DP is given, you can fin out the addendum

29. The useful load of an a/c is the

1. Difference between maximum gross weight & empty weight (*)

2. Difference between the net weight & total weight

3. Sum of the empty weight & maximum gross weight


30. What is the color of AN-steel flared tube filling is

1. Black (*)2. Blue3. Green4. White

31. What is the advantage of double flaring on Al-tubing

1. Easy of connection2. It is less resistant to the shearing effect3. It is more resistant to shearing effect of

torque (*)4. None of the above is correct

32. Flexible hose used in a/c plumbing is classified in size according to

1. Outside diameter2. Class sectional area3. Inside diameter (*)4. All are correct

33. Which tubing has the characteristics – (high strength & abbrassive strength) for use un a high pressure (32,000 psi) hydraulic sysem of operation of landing gear & flap

1. 2024 – T2. 5052 – O Al-alloy3. CRS (*)4. 1100 – ½ or 3003 – ½ H, Al-alloy

34. The setting in the micrometer indicates

1. From rotary to reciprocating2. From reciprocating to rotary3. Rotary to linear (*)4. All the above is correct

35. When a gear sector is engaged with a rack the motion will be

1. Intermittent rotary2. Reciprocatry3. Intermittent straight line (*)

36. Aviation ship is used for cutting

1. Thick metal sheet2. Heat treated Al. alloy & stainless steel

(*)3. Only stainless steel4. Any sheet metal

37. Headless grab screws is installed by

1. Allen key (*)2. Special ratchet spanner3. Suitable screw driver4. Special tool

38. Milling machine is



1. Used for surface finishing2. Used for sawing the metal3. Used for grinding the metal4. All of the above is correct (*)

39. 25 division of vernier scale concides 24 cms of main scale & 1 cm in main scale is divide into 20 equal parts

1. 0.01 cm (*)2. 0.05 cm3. 0.01 cm4. 0.1 cm

40. Considering all factors the most commonly used metal as electrical conductor in a/c is

1. Aluminium (*)2. Copper3. Silver4. Tungsten

41. A galvanometer may be converted to a voltmeter by connecting

1. Low resistance coil in parallel with meter2. High resistance in parallel to meter3. Low resistance in series with meter4. High resistance in series with meter to

increase range (*)

42. As per ATA 100 code the size & type of electrical wire in aircraft are given

1. By prefix & suffixes2. Side by side3. At the beginning & at the end4. By letters & numbers (*)

43. Transformer is a device

1. Used in transistors set2. Transfer electrical energy from one

circuit to another by changing frequency3. Both 1 & 2 are correct (*)

44. Hydrogen evolves

1. Towards the end of the charging cycle of Ni-cd battery (*)

2. Throughout the servicing of lead acid battery

3. When the battery is over charged4. All of the above is correct

45. The strength of an electromagnet depends on

1. Number of the turns of the coil2. Strength of rotation of the magnet3. Speed of rotation of the magnet (*)4. All of the above is correct

46. The setting in vernier caliper indicates

1. Positive error2. Negative error3. No error (*)4. All are false

47. Altimeter consists of stack of

1. 3 evacuated capsule2. 2 evacuated capsule3. Barometric scale adjustment4. All are correct (*)

48. Normalizing of steel is done by heating

1. Heating just above the critical point & cooling in air (*)

49. In British system of electromagnetic flow detection is indicated by

1. WFD2. EFD3. MFD (*)

50. Butyl rubber used for

1. Tyre & tube2. Seals & gasket (*)3. A/C Fuel tank lining4. None of the above is correct

51. Dump flux used while welding with oxyacetelene flame will cause

1. Porosity (*)2. Crater3. Channeling

52. Alclad is a

1. Aluminium alloy sandwiched between for aluminium coating (*)

53. Number of threads per inch is measured by

1. Steel rule2. Screw pitch gauge (*)3. Ring gauge4. All of the above is correct



54. Decimal 29 is equivalent to binary

1. 11101 (*)2. 1011013. 1101014. 101011

55. SCR has

1. 2 terminals2. 3 terminals (*)

56. In pitot & static system static vents & pitot vents are placed at separated location to prevent

1. Position error2. Ice firmation3. All of the above is correct (*)

57. Difference of both pressure is measured

1. Altimeter2. ASI (*)

58. The phenomenon which causes continuous spin of outer ring due to coincidence of rotor ring with outer gimble ring axis is called

1. Gyro wander2. Apparent precession3. Gyro tumbling4. Gimble lock (*)

59. For brazing the flame used

1. Oxitizing2. Carbonizing3. Neutral (*)4. Reducing

60. High carbon steel co9ntains carbon

1. 0.50% - 1.5%2. 0.30% - 1.50%3. 0.50% - 1.05% (*)4. 1.50% - 2.2%

61. Crack at the surface should be welded by

1. Butt welding (*)2. Lap welding3. Fillet welding

62. In chalk test we used

1. Hot fluid2. Cold fluid3. Both are correct (*)4. None of the above is correct

63. Al. alloy core with pure alluminium coating is knows as

1. Al clad2. Pureclad3. Pure clad & electro statically preventive4. All of the above (*)

64. Bearing strength is

1. The strength that resists a force that tends to tear it apart (*)

65. In NDT X-ray equipment are graded according to the

1. Volt – range (*)2. Electromagnetic radiation3. Amp4. Penetrating power

66. To improve the tensile strength, ductility & shock resistance, magnesium alloy castings normally

1. Case hardened 2. Solution heat treated (*)3. Precipitation heat treated4. Solution heat treated

67. Thermistor

1. Zero temperature coefficient2. Variable temperature coefficient3. Positive temperature coefficient4. Negative temperature coefficient (*)

68. 7075 – 0 indicates

1. Full annealed condition (*)

69. Which of the following revet does not required heat treatment

1. 2017 – D2. 2117 (*)3. 2024 – DD4. 2117 – AD

70. In oxyacetelene welding equipment oxygen & acetylene are identified by

1. Left & right hand thread2. Color & length of cylinder



3. Diameter of the hose4. Both 1 & 2 are correct (*)

71. Cleaning of acrylic & rubber is done by

1. MEK2. Aliphatic naptha (*)3. Aeromatic naptha4. Acetone

72. Elastomeric rubber is

1. Rubber impregnated in metal2. Shock absorber (*)

73. NDT of aluminium alloy is done by

1. Penetrant method2. Zyglo method3. X-ray method4. Ultrasonic method (*)

74. Heat treatment aluminium alloy is done by

1. Heating KOH & NAOH (*)2. Heating above critical point & cool in air

75. UFD indicates

1. Ultrasonic flow detection (*)2. Radiography3. Dye penetrant flow detection

76. Welding for stainless steel the flame used

1. Carbursing2. Neutralizing (*)3. Dye penetrant flow detection

77. Welding for stainless steel the flame used

1. Carbursing2. Neutralizing (*)3. Caldizing

78. Carbon in iron at normal temperature remains as

1. Ferrite (*)2. Dissolved iron matrix3. Austenite4. Special iron matrix

79. Baffles in hydraulic tank is given for

1. Providing an expansion tank is given for

2. Resisting fuel surging within the tank (*)3. Providing internal structural integrity4. Preventing fuel overflow during refueling

80. In a blind revet the length between manufacture head to the end is

1. Grip length (*)2. Grip range3. Shank length of the revet

81. In a revet layout the shank diameter should be

1. Twice the thickness of the thicker sheet2. 1/8th thickness of the thicker sheet3. Three times the thickness of the thickest

sheet (*)

82. In a bolt & nut assembly after applying torque, cotter pin hole is not aligning the bolt my be

1. Slightly tightened to next slot (*)2. Slightly loosened to next slot

83. A/C chains are specified by

1. Load carrying capacity2. Pitch & number of links3. Both are the above is correct (*)

84. Helicoil insert has a natch & tang along end to

1. Facilitate installation2. The removal of tang after it has screwed

into the trapped thread hole (*)

85. Unless specified the torque to be applied to a bolt & nut assembly should

1. Degreased dry & clean thread (*)2. Lubricated thread

86. Raised double dash rivet is

1. 2117 rivet2. 2024 rivet (*)

87. Crinckle washer is used for

1. Hard steel to take food2. Instrument mounting for loft load &

electrical installation (*)

88. Cotterpin for castellated nut is made off



1. Stainless steel2. Corrosion resistant steel3. Cadmium plated low carbon steel (*)4. Both 1 & 3 are correct

89. Circuit containing registor, capacitor, diode, seminconductor is a

1. Linear circuit2. Non linear circuit3. Bipolar circuit4. Unipolar circuit

90. 1110101 is equivalent to

1. 1172. 293. 634. None of the above is correct

91. In lad acid battery sedimentation occurs because of

1. Overcharging2. Frequent charging & discharging3. Over discharging (*)4. High rate of discharge

92. A circular mill is

1. A circular whose diameter is 0.001" (*)

93. Vent plug of Ni-cd battery should be cleaned by

1. Distilled water only (*)2. Distilled water & detergent3. Hot water & distill water4. Detergent

94. Current is 2.5 amp, voltage 12 v, used for 1 minute. How much energy it will consume

1. 1800 J (*)2. 2J3. 60 J4. 18 J

95. In British system of drawing the inverted triangle gives

1. Important dimensions2. Heat treatment3. Surface finish (*)

96. Micron is

1. Millionth of meter (*)

2. Thousandth of meter

97. A hole to be reamed should be drilled to under

1. 0.001" – 0.002"2. 0.003" – 0.007" (*)3. Same size

98. Every third tooth of the hackshaw is made straight

1. To give clearance for the cutting2. Repsaw tooth is provided

99. The vernier scale has

1. Positive error2. Negative error

100. Least count is defined as

1. One main scale division is divided into the total division of the vernier / thimble scale (*)

2. 1 MSD – 1 TSD

101. Least count of 50 divisions on the circle of micrometer whose pitch is 1 mm

1. 0.01 mm2. 0.02 mm (*)3. 0.5 mm4. 0.0902 mm

102. Backslash of a micrometer is caused due to

1. Manufacturing defect2. Wear & tear3. Wear on the nut4. All of the above correct (*)

103. Snap gauge is a

1. Go & number go gauge (*)2. It will snap at preset torque load3. Gauge which measure TPI4. Gauge which measured outside

diameter

104. Aviation snip used for cutting

1. Stainless steel & aluminium alloy heat treated sheet (*)

2. Chromium sheet3. Heavy sheet metal4. Any sheet metal



105. Gyroscope – the phenomenon which causes continious spin of outer ring due to coincidence of rotor ring with cuter gimble ring axis is called

1. Gyro wander2. Gyro tambling3. Apparent precession4. Gimble lock (*)

106. Rate of turn indicator

1. Rate gyro (*)2. Tied gyro3. Earth gyro4. Free gyro

107. Difference of pilot & static pressure is measured by

1. ASI (*)2. Altimeter3. VSI

108. Altimeter operation mechanism consists of a

1. Two aneroid capsule2. Three aneroid capsule3. Adjustment for barometric pressure

provided4. All of the above is correct (*)

109. Free gyro has

1. The plane of freedom2. The planes are right angle to each other

& three plane (*)

110. Turn & slip indication operates respective by

1. Gyro only (*)2. External force & gravity3. Gyro & gravity

111. Acceptable deviation in compass from the equipment

1. 1 degree from the needle to the compass

2. 2 degree from the needle to the compass (*)

3. 3 degree from the needle to the compass

112. Spherical roller bearing will take

1. Radial load heavy

2. Axial load slightly3. Both the above are correct (*)

Paper – II (June – 1999)

1.The main memory of a computer is

1. RAM (*)2. ROM3. Hard Disc4. Micro processor chips

2.T6 designation of Al-alloy indicates

1. Solution heat treated & then artificially aged (*)

2. Solution heat treated & then stabilized3. Artificially aged only4. Solution heat treated & then cold worked

3.0.10 mm is equivalent to

1. 0.039"2. 0.041"3. 0.035"4. 0.045"

4.The major alloying element in 7075 Al-alloy is

1. Magnesium2. Silicon3. Mg & Si4. Zinc (*)

5.The purpose of turnbuckle is to

1. Make minor adjustment in cable length2. Adjust cable tension3. Both 1 & 2 are correct (*)4. None of the above is correct

6.A 7 19 cable is made up of

1. 7 strands of 19 wire each (*)2. 19 strands of 7 wire each3. Both are correct4. None of the above is correct

7.For cast iron, the included angle of drill is

1. 118 (*)2. 703. 904. 140

8.Select the correct sta5tement

1. Hand taps are available in two sets



2. Bottoming tap is used to smoothen the bottom of a blind hole

3. Plug tap is used at the last4. Taper tap is used first (*)

9.The external threads on a bar is made by

1. Taps2. Stock3. Dies (*)4. Reamer

10. The defect in wheel plus is inspected by

1. Dye penetrant process (*)2. Magnetic particle inspection3. Eddy current testing4. Ultrasonic testing

11. The voltage rating of fully charged cell of 20 Ni-cd battery is

1. 1.8 to 2.1 v2. 1.24 to 1.3 v3. 1.4 to 1.7 v4. 1.3 to 1.5 v (*)

12. If the temperature of a confined liquid is held constant & its pressure tripled, the volume will be

1. Triple2. Be reduce to 1/3rd its original (*)3. Remain the same4. None of the above is correct

13. If the pitot head is blocked then which instrument is affect

1. ASI (*)2. Altimeter3. Turn & bank indicator4. Slip indicator


1. QNE setting gives height above sea level of the airport

2. QNH setting gives airfield elevation3. QFE setting makes the altimeter read

zero on landing at aerodrome (*)4. All of the above is correct

15. A double flare should be used on

1. Stainless steel2. Nickel steel3. Cast iron

4. Al alloy only (*)

16. Bead width of bolt weld should be

1. 2 to 3 T2. 3 to 5 T3. ¼ to ½ T4. 1 1/3 T to 1 ½ T

17. In a fillet weld, the penetration requirements are

1. 60 to 80% of the thickness of the base metal

2. 100% of the thickness of the base metal3. 200% of the thickness of the base metal4. 25 to 50% of the thickness of the base

metal (*)

18. In the fluerescent penetrant inspection,

1. The defect will show the flow as a brilliant yellow green (*)

2. The defect will show the flow as a light yellow green

3. The sound area will appear white (deep blue violet)

4. The diffect will show as deep blue violet

19. In jacking of aircraft

1. Main wheels are raised together (*)2. Nose wheel is raised 6" above the

ground3. Nose wheel is raised for free movement

of it4. None of the above is correct

20. Centre drill is used to

1. Make hole & reaming in one operation2. Make hole & countersunk in one

operation (*)3. Make taper hole4. All of the above

21. Unless otherwise specified, torque value for tightening a/c nuts & bolts relate to

1. Clean dry thread (*)2. Clean Lightly oiled thread3. Either 1 & 24. None of the above

22. A fibre type, self locking nut must never be used on an a/c if the bolt is



1. Under shear loading2. Under tension loading3. Both tension & shear loading4. Subjected to rotation (*)

23. Aircraft bolts are usually manufactured with a

1. Class 1 fit for the threads2. Class 2 fit for the threads3. Class 3 fit for the threads (*)4. Class 4 fit, for the threads

24. Generally speaking, bolt grip length should be

1. One & one half times the thickness of the material through which the extend

2. Equal to the thickness of the material through which they extend plus approximately one diameter

3. Equal to the thickness of the material through which they extend (*)

4. 2 times the diameter

25. A particular component is attached to the a/c structure by the use of an a/c bolt & a castleted tension nut combination, if the cotter pin hole does not align with the recommended torque range, a acceptable practice is

1. Exceed the torque range2. Lubricate the threaded section of the

nut, bolt & torque3. Change washers & try again (*)4. Change the nut

26. How is a clevis bolt used with a fork end cable terminal secured

1. With a shear nut lightened to a sung fit, but with no strain imposed on the fork & satefied with a cotter pin

2. With a castle nut tightened until slight binding occure between the fork & the fitting to which it is being attached

3. With a shear nut & cotter pin or a thin self locking nut tightened enough to prevent rotation of the bolt in the fork (*)

4. All are correct

27. A bolt with an X (cross) inside a triangle on the head is classified as a

1. Standard a/c bolt2. Close tolerance bolt NAS (*)3. CRS bolt4. Special bolt

28. Through which material will magnetic lines of force pass the most

1. Copper2. Iron (*)3. Aluminium4. All of the above is correct

29. With an ohmmeter connected into the circuit as shown, what will ohmmeter read

1. 20 2. Infinite3. 10 4. None of the above is correct

30. How can the state of charge of a Ni-cd battery be determined

1. By measuring the specific gravity of the electrolyte

2. By measuring charge (*)3. By the level of electrolyte4. All of the above is correct

31. Zero fuel weight is the

1. Dry weight plus the weight of full crew, pax & cargo

2. Basic operating weight without fuel3. Maximum permissible weight of a

loaded a/c including pax, crew, cargo without fuel (*)

4. Maximum weight of the a/c with crew, oil, pax, less fuel in wing tank

32. The empty weight of an aircraft is determined by

1. Adding the net weight of each weighing point & multiplying the measured distance to the datum

2. Subtracting the tare weight from the scale reading & adding the weight of each weighing point (*)

3. Multiplying the measured distance from each weighing point to the datum times the sum of scale reading less the tore weight.

33. Compound gear is used for

1. Better efficiency2. Better transmission of motion3. Greater range of speed4. All of the above is correct (*)



34. Mg-alloy used with other metal should be

1. Given two coasts of zinc chromate & a layer of pressure – sensitive _____ tape 0.003 in thick is applied smoothly & firmly enough to prevent air bubbles & wrinkles (*)

2. Given one coat of zinc chromate & a coat of pressed vinyl

3. Given two coat of zinc chromate & two coat of pressed vinyl


35. An automotive type flaring tool will produce a flare

1. 37 degree2. 45 degree (*)3. 60 degree4. 30 degree

36. Color of AVGAS low lead fuel is

1. Died blue (*)2. Color less3. Died green4. None of the above is correct

37. With prepregs

1. Manual application not required2. Has to be kept in freeze3. Both 1 & 2 are correct (*)4. None of the is correct

38. The measurement reading on the illustrate micrometer is

1. 0.2857"2. 0.2901"3. 0.2511"4. 0.2861"

39. A primary cause of inter granular corrosion is

1. Improper heat treatment (*)2. Dissimilar metal contact3. Improper application of primary4. None of the above is correct

40. Galvanic corrosion is likely to be most rapid & sever when

1. The surface area of the cathodic metal is similar than surface area of anodic metal

2. The surface area of the anodic & cathodic metals are approximately the same

3. The surface area of the anodic metal is smaller than the surface area of the cathodic metal (*)

41. Jet fuel identifiers are

1. Performance number to designate the volatility of the fuel

2. Performance number & are relative to the fuel performance in the a/c engine

3. Type number with no relation to the fuel is performance in the aircraft engine (*)


42. Brinell hardness testing is applicable to

1. Small part & high hardness2. Large part & small hardness3. Small part & small hardness4. Large part & high hardness (*)

43. Which one id incorrect

1. ATA – 62 communication2. ATA – 30 ice & rain protection3. ATA – 52 dcor4. ATA – 78 engine exhaust

44. What will be the speed of driven gear if driver gear is 120 rpm.

1. 60 rpm2. 120 rpm3. 100 rpm4. 240 rpm

45. In dye penetrant test, the vol, of defect can be interpreted by

1. Staining route2. Staining extent (*)3. Staining speed4. All of the above is correct

46. The test sample which can be tested by making both probe simultaneously in opposite direction to defect flames on surface

1. Flash butt metal (*)2. Thin sheet metal3. Cast ingot4. None of the above is correct



47. During repair procedure of composite, part heat treatment is done for

1. Small disbond2. Seal be smallest3. Restore surface protection4. None of the above is correct (*)

48. When grain size of the steel will be smallest

1. Heated first below critical range2. Heated just above critical range (*)3. Below lower critical range4. None of the above is correct

49. If a body is given shape & lorituation is exposed to uniform flow of incompressible fluid, each component of the force which the fluid exerts the body can be expressed as product of

1. Area 2. Dynamic pressure3. Reynolds no.4. All of the above is correct

50. PARAL KETONE is used for preventing corrosion of

1. Mg alloy parts2. Welded steel structure3. Cables, ferros & non ferros (*)4. B & C

51. The process used for checking moisture extrapped in composite is

1. Radiography2. Ohmmeter3. Laser holography4. All of the above is correct (*)

52. What procedure is used to digtinguish heat treatable alloys from non heat treatable alloys

1. 10% solution of caustic soda (*)2. 5 % solution of muriatic acid3. Rockwell test4. 10% solution of H2Sc

53. When welding various metals you may reduce the chances crack of during by

1. Preheating (*)2. Anodizing

3. Heat treating4. Clamping

54. Which of the follow of a/c parts or units should not be welded

1. Items which are not responsive to heat treatment

2. Plain carbon, Ni-steel of SAE 2300 series

3. Turn buckle barrel ends (*)4. Steel tubular members of basic structure

55. When welding a high carbon steel use a

1. Low carbon rod2. High carbon rod (*)3. Rod of either low or high carbon content4. Rod of intermediate carbon content

56. High carbon steel can be readily welded by

1. Are welding procedure2. Oxidizing flame & high carbon rod3. Neutral flame & high carbon rod (*)4. Carbonising flame & low carbon rod

57. N.W.V.

1. Strength of the compositor material2. Strength of the material & composing

with charge3. Strength of reinforcing fibre4. None of the above is correct

58. An flared tube fitting is made of

1. Al (*)2. Cu base alloy3. Steel4. All of the above is correct

59. Correct statement regarding refueling is

1. Earthing is not required2. Disconnect the earthing line first before

disconnecting the fuelling nozzle3. If a/c is earthed, fuelling vehicle, doesn't

require earthing4. None of the above is correct (*)

60. Scales are removed from lightly stressed steel parts by

1. Hard abrasive paper2. Buffing Wheel (*)3. Wire brush




61. If you have some 178 rivet, above 3/16" in diameter that had been aged for the hours after quenching

1. You could use them frouding they have not exceeded 5 hours of ageing

2. You could not use them because 178 rivets should be used within 10 minutes after quenching

3. You could use them provided they had not exceeds 3 hours of ageing

62. Flux from ferrous metals can be removed by using

1. 25% sol of silver nitrate2. No need of flux by welding ferrous

metals3. You have to remove flux from ferrous

metals (*)4. A wire brush

63. A flux for silver soldering is obtained by using

1. Zn Cl2 (*)2. Nitric acid3. Muriatic acid4. None of the above is correct

64. Welding of a/c from welding of steel differs in that

1. It is considered harder to weld because of high temp.

2. Steel does not have a color change that is apparent in Al

3. M.P. of Al is much lower than steel & the expansion is nearly three times as great (*)

4. It is much easier to weld because a flux is used

65. Wrought iron is identified by

1. Red colored spark2. Straw yellow spark (*)3. White spark4. None of the above is correct

66. Which gage of telescoping gauge is identified by its

1. 1/16 to 6"2. 5/18 to 6"3. 5/8 to 6"4. ½ to 6" (*)

67. Line used to show an edge which is not visible is a

1. Break line2. Hidden line (*)3. Imaginary line4. Phantom line

68. When flaring Al-tubing for used with AN coupling nuts & sleeves, the flat angle should be

1. 672. 453. 37 (*)4. 60

69. The dia of flexible hose for a/d plumbing is classified in size according

1. Cross sectional area2. Inside dia (*)3. Outside dia4. Both 1 & 2 are correct

70. Make an external thread which tool is used

1. Tap 2. Threaded spanner3. Die (*)4. None above is correct

71. Pulleys are normally made of

1. Asbestos2. Pnenolic formaldehyde (*)3. Mica4. Both 1 & 2 are correct

72. Function of turnbuckle is to

1. Adjust the cable tension2. Adjust the minor length of cable3. Both 1 & 2 are correct (*)4. As in a, & for frequently connecting &

disconnecting the cable


1. The weld should be taper off smoothly into the base metal

2. The depth of penetration should be different to ensure fusion of the filler rod.

3. The height of the weld should be 1/8 inch above the base metal



4. The ripples should be even & well feathers into the ________ metal which shows no burn due to overheating (*)


1. Fibre lock nut should not be used on the place where vibration is more

2. Fibre lock nut should not be used on the place where temp is above 250 F (*)

3. Fiber lock nut should not be used on the place where there is relative motion between parts


75. Al clad is

1. Coating of Al alloy on the pure Al2. Coating of pure Al on the Al-alloy (*)3. Coating of pure Al on non-metal4. None of the above is correct

76. In SAE 2040, the last two digits indicates

1. Percentage of alloying element2. Percentage of carbon content (*)3. Number of carbon molecules4. Both 2 & 3 are correct

77. Parts should be normalized after welding

1. To relieve internal stresses (*)2. To remove the surface scale formed

during welding3. To introduce slight amount of carbon to

improve the surface harness of the weld4. To make improve mechanical property

of the metal

78. Match the following

GEAR BEARING HARNESS TESTER

1. Bowel Needle Spark2. Ball Rockwell Idler3. Idler Ball Rockwell (*)4. Needle Bowel Ball

79. The bolts are manufactured in

1. Class 2 fit2. Class 1 fit3. Class 3 fit (*)4. There is no fit for a/c bolts

80. Purpose of tempering is to

1. Reduce the softness

2. Reduce the brittleness due to hardening (*)

3. Improve the softness / toughness4. Both 2 & 3 are correct

81. Corrosion on copper in indicated by

1. White color2. Greenish color (*)3. Blue color 4. Redish color

82. Monel is the alloy of

1. Cu-steel2. Ni-steel (*)3. Inconel4. Chromel

83. Self locking nuts should be replaced when

1. It is easily tightened by fingers (*)2. Its locking property decreases3. Its inside dia equal to outside dia of the

corresponding bolt threads4. All above is correct

84. The length of file is measured from

1. Tang to tip2. Heel to tip (*)3. Tip to secreted portion4. None of the above is correct

85. Water in the honey comb structure may be detected by

1. Floor ascent inspection method2. Ultrasonic inspection method3. Radiographic inspection method (*)4. Eddy current inspection method

86. To transmit the rotating motion between the shaft & wheel & to allow parallel movement of the wheel at the same time, the type of key is used.

1. Woodruff key (*)2. Flat saddle key3. Feather key4. Hollow key

87. The size of drill is indicated by

1. Letter 'A' to indicated smallest size2. Letter 'Z' to indicated longest size3. Letter 'z' to indicated smallest size 4. Both 1 & 2 are correct (*)



88. Purpose of heat treatment is

1. To improve electrical & mechanical property

2. To relieve internal stresses3. To make material harder & stronger4. All of the above is correct (*)

89. To carry the petroleum & synthetic fluid which hose material is used

1. Teflon (*)2. Butyl3. Buna – N4. Synthetic

90. The value of induced emf depends on

1. The speed of rotation2. The length of the magnetic field3. The number of wires moving through the

magnetic field (*)4. All above is correct

91. In case multimeter

1. Red lead indicating negative terminal2. Red lead indicating positive terminal3. Black lead indicating negative terminal

(*)4. Black lead indicating positive terminal


1. A fuse is a strip of metal that melts when excessive current flow through it

2. A circuit breaker is device that stop current flow when it exceeds a pre-determined value

3. Both 1 & 2 are correct (*)4. A.C.B. is devised that melts when

excessive current flow through it.

93. The specific gravity of electrolyte in incase of Ni-cd battery is

1. Between 1.240 to 1.300 (*)2. Between 1.225 to 1.2753. Between 1.225 to 1.3004. None of the above is correct

94. Battery can be charged by

1. Constant current method2. Constant voltage method3. Both 1 & 2 are correct (*)4. None above is correct

95. Spray quenching is normally carried on

1. Large parts2. Small parts3. Almost al-alloy4. As in 1 & 3 & minimizes distortion &

alleviates quench cracking

96. In case of ultrasonic transmission method, which statement is correct

1. In pulse transmission there is only one peak

2. As in (1) & if there is only one peak3. In pulse transmission there is two peak4. As in (3) & if there is another peak

between transverse & bottom it indicate flaw (*)

97. To case of chromium plating the current density should be

1. Between 150 – 200 amp, per sq. ft2. Between 150 – 200 amp, per sq. ft3. Between 100 – 250 amp, per sq. ft4. Between 100 – 200 amp, per sq. ft

98. Coating of aluminium metal in powder process is called

1. Sheradizing2. Granodizing3. Anodizing4. Colorizing (*)

99. In balanced pressure type torch

1. O2 & acetylene comes at the same pressure

2. O2 & acetylene comes at the different pressure

3. As in (1) & have equal size (*)4. None of the above is correct

100. Radiographic inspection are used to defect

1. Internal & external crack2. Porosity3. Water in the honey comb core4. All of the above is correct (*)

101. In flexible back blade

1. Only the part where the teeth are cut is hardened

2. Only the end position where holes are drilled is hardened



3. As in (1) & rest of the blade remaining soft (*)


102. Half round file is suitable for filing

1. Irregular shape2. Large internal radius3. Both 1 & 2 are correct (*)

103. Which type of punch should be used to take out rivets, split pins, shack

1. Drift punch2. Pin punch (*)3. Center punch4. Prick punch

104. Minimum number of gear required to make a compound gear train is

1. 32. 23. 4 (*)4. More than 2

105. Which statement is correct for stub tooth

1. Stud tooth is thicker in proportion to its length

2. It is used where more strength is required

3. Its operation is not as smooth as involutes tooth

4. All above is correct (*)

106. The transmit reciprocating motion into rotary motion, which type of gear normally used

1. Rack & sector2. Sector & gear3. Rack & pinion (*)4. Not possible with gear

107. Which statement is correct regarding shrink rule

1. It has number 4 graduation2. The inch marking on the faces are

slightly longer than actual inches3. It is made from 1/10 to 7/16 inch per ft

over size4. All the above is correct (*)

108. In order to locate a defect in a part which condition is necessary

1. Magnetic lines of forces must pass parallel to the defect

2. Magnetic lines of forces must pass perpendicular to the defect (*)

3. Induced magnetic flux in more than one direction


109. ATA 100 specification system, 32 indicates

1. Oxygen2. Indicating & recording3. Landing gear (*)4. Light

110. Color of dye used in pendants dye process is

1. Brown2. Red (*)3. White4. None of the above is correct

September 1993

1.Knurling is the

1. Rolling depression on the soft material2. Rolling depression on any kind of

material3. As in (2) & is used to provide proper grip

(*)4. None of the above is correct

2.To make stretch in the direction of its width

1. Use straight peen hammer (*)2. Use cross peen hammer3. Any kind of hammer can be used4. Use ball peen hammer & apply blow

with an angle

3.Protective jaw caps are used with vice

1. To protect the vice jaw2. To protect the parts from becoming

damage (*)3. To apply constant & even pressure on

the parts4. All of the above is correct

4.To make a V-shaped groove the chisel commonly used is

1. Round nose chisel2. Flat chisel3. Cap chisel4. Diamond point chisel



5.To locate the center on a round block use

1. Surface gauge2. Center square head (*)3. Hermophrodite caliper4. All of the above is correct

6.Which cutting fluid is used on tool steel

1. Mineral land oil2. Soluble oil & (1) is correct3. Sulfurized oil4. All above is correct (*)


1. Linear sidewise motion is known as backlash

2. Reaming should be down after drilling3. As diametral pith increases, size of tooth

decreases, no. of teeth increases4. All of the above is correct (*)


1. Coating of pure Al & Al-alloy is called2. Titanium has low strength to weight ratio3. Brass & bronze comes under copper4. Both 1 & 3 are correct

9.Which instrument is used for measuring the roughness of surface

1. Surface gauge2. Surface plate with v-block (*)3. Profilometer4. Pyrometer

10. Conductor having length of 2 ft & resistance 2 ohms, now if we reduce its length just half of original, then resistance will be

1. Just double2. Just half (*)3. Just equal4. None of the above is correct

11. Which instrument is utilizing both dynamic & static air for its operation

1. Altometer2. VSI3. ASI (*)4. Both 1 & 3 are wrong

12. The sensitively of altimeter is increased by increasing

1. Number of gears & sectors2. Number of gears & pinion3. Number of capsules (*)4. Both 1 & 3 are correct


1. A suspended magnet always assume a north & south position (*)

2. Inductors when connected in parallel the total inductance is the south their values

3. Inductive reactance is inversely proportional to inductance & frequency


14. Which instrument is used for checking the insulation resistance

1. Ohm meter2. Megger (*)3. As in (1) & maghometer4. All of the above is correct

15. 'D' Arsonavel ammeter is used

1. For measuring ammeter AC current2. For measuring DC current (*)3. For measuring AC voltage4. For measuring DC voltage


1. Specific gravity reading between 1.300 to 1.275 indicates a high of charge

2. Specific gravity reading between 1.275 to 1.240 indicates a high of charge

3. Specific gravity reading between 1.240 to 1.225 indicates a medium charge


17. In triode tube

1. Srid is placed between plate & cathode (*)

2. Plate is placed between grid & cathode3. Cathode is placed between grid & plate4. None of above is correct

18. The size of the flexible hose is determined by its

1. Outside dia2. Inside dia (*)3. Number of piles to makes hose4. Cross section area




1. Dia of bolt in 1/16th & length in 1/8th (*)2. Dia of bolt in 1/8th & length in 1/16th

3. Dia of rivet in 1/16th & length in 1/32 th 4. Both 1 & 3 are correct

20. To prevent sparking

1. Connect the condenser in series with the part

2. Connect the condenser in parallel with the part (*)

3. Connect the condenser in any desire position

4. Both 2 & 3 are wrong

21. When capacitor is connected in parallel, which formula is used determining the total capacitance

1. 1/C = 1/C1 + 1/C2 + 1/C3

2. C = C1 = C2 + C3 (*)3. C = 1 / (C1 + C2 + C3) C1 + C2 + C3


22. Piezoelectric effect is found on

1. Rochelle salt2. Phenolic material3. Quanty & rochelle salt4. Both 1 & 3 are correct (*)

23. Which is the correct statement

1. Gasket are always used with backup ring

2. Gasket are stationery seals3. Gasket can be used as an oil seal4. Both 2 & 3 are correct (*)

24. A bolt having part number AW 3 DD 6A having following means

1. It indicates that bolt dia is 3/16", length 6/8" & material 2024

2. It indicates that bolt dia is 3/8", length 6/16" & material 2024 (*)

3. It indicates that bolt dia is 3/8", length 6/16" & material corrosion resistant steel

4. It indicates that bolt dia is 3/16", length 6/18" & material corrosion resistant steel

25. AN 300- series is used for indicating

1. A/C screws2. A/C nuts (*)3. A/C washers4. A/C bolts

26. The length & dia of DZUS fastener is measured jin

1. Length 1/8" & dia 1/16 inch2. Length 1/16" & dia 1/8" inch3. Length 1/8" & dia 1/100 inch (*)4. Length 1/100" & dia 1/16" inch

27. A/C cables are normally made of

1. Carbon steel2. CRS3. Galvanized steel4. Both 1 & 2 are correct (*)


1. Hermaphrodite caliper is used as a marking gauge in layout work

2. In commercial normalizing quenching is normally carried out in air

3. The color of spark in gray cast iron is red at the point of contact


29. The given figure indicates

1. NPN transistor2. PNP transistor3. As in (1) & arrow indicating emitter4. As in (2) & arrow indicating emitter

30. In heat treatment of material T8

indicating

1. Solution heat treatment & then stabilized2. Solution heat treated & artificially edged

& then cold worked3. Solution heat treated & cold worked &

then artificially edged (*)4. Solution heat treated, & then artificially

edged

31. In Rockwell hardness tester there is two weight except weight pan of machine, one is red & other is black. Now choose correct answer

1. When there is no load machine applied a load of 60 kg

2. Where black wt. is on the pan, machine applied a load of 150 kg

3. As 1 & 2 & when red wt. is on the pan machine applies a load of 100 kg

4. As a, b, & c & black wt. is always used with red wt. (*)

32. Titanium is heat treated for the purpose of

1. Thermal hardening to improve strength



2. Annealing after hot working or cold working

3. Relief of stresses setup during cold working


33. Filler are added in resin to

1. Increase strength2. As in 1 & 2, also control viscosity & wt3. Increase pot, life4. As in (2) also control viscosity & wt (*)

34. Mark the correct statement regarding composite material

1. Carbon / graphite is stronger in compressive strength (*)

2. Color of kevler is brown3. S-glass is borosilicate glass4. All above is correct

35. Mark the wrong statement

1. Nomex is the widely used core material2. Urothane can not be cut by hot wire

cutter3. Carbon is identified by its black color4. Ciramic fibre are in not used with metal

matrix (*)

36. Stress corrosion occurs as a result of

1. Combined effect of tensile stress & lack of uniformity in alloy structure

2. Relative motion between two parts3. Combined affect of tensile strength &

corrosive environment4. Combined effect of compressive stress

& corrosive environment (*)

37. The flaring tool produces a flare of

1. 352. 35 to 453. 30 to 374. 35 to 37

38. Bolts are inspected

1. Magnetically2. Zyglo3. As (1) & fluor4escent4. All above is correct (*)

39. The place where external tension loads are to be affected

1. Use clevis bolts

2. Use eye bolts (*)3. Use close tolerance bolt4. Both 2 & 3 are correct

40. Wing type bolts self locking nuts are made in range of

1. No. 6 upto ¼"

41. The material used for making the tap is

1. Stainless steel2. Hard tempered steel3. Cast iron4. Tool steel (*)

42. The included angle of center punch is

1. 802. 753. 604. 90 (*)

MARCH – 1992

1.In ATA 100 specification system chapter 61 in indicating

1. Rotars2. Propellers (*)3. Wings4. Powerplant

2.The tile block having following contents

1. Drawing number (*)2. Date of dispatch3. Number of parts4. All above is correct

3.The most commonly used synthetic material for making flexible hose is

1. Buna – N2. Butyl3. Both 1 & 2 are wrong4. Teflon (*)

4. Hollow reamers are also called

1. Fluted chucking reamer2. Shell reamer (*)3. Jobbers reamer4. None of the above is correct

5.Which statement is correct

1. Single thread lead equal to the pitch (*)



2. In double thread, pitch is double of the lead

3. In triple thread, pitch is triple of the lead4. Both 2 & 3 are correct

6.During spark test of nickel, which color of spark will produce

1. Orange2. White (*)3. Red4. Straw yellow

7.Function of disintegrator is to

1. Make hole without producing chips2. Make hole of any shape3. As in 1 & 2 & also make hole in any kind

of material4. Check the accuracy of surface plate

8.Mark the wrong statement

1. For insite check, the penetrate dye process is useful

2. Crack is indicated by a red stain termed by the dye in case penetrate dye process

3. Radiographic inspection is not suitable for surface crack (*)

4. The eddy current inspection offers improved sensitivity as compared other NDT best

9.The function of torch tip is to control the

1. Amount of heat2. Flow of gases3. Both 1 & 2 are correct (*)4. All above wrong

10. Galvanizing is the process of coating zinc is normally carried out on

1. Al-alloy2. Iron & steel3. Steel parts (*)4. Mag-alloy


1. Double cut means two different strokes at angle opposite to each other (*)

2. Second cut is line medium smoothness3. Double cut & second cut is same4. All above is correct

12. Name the kind of flux used with soldering the brass

1. Zinc chloride (*)2. Zinc carbide3. Rock wax4. Resin

13. The minimum radius that can be measured by filler gauge is

1. 3/64"2. 1/64" (*)3. 1/32" – ¼"4. 1/16"

14. Accuracy of square gauge can be checked by

1. V – block (*)2. Jevel protector

15. What is the function of ratchet step in micrometer

1. Prevent turning of the thimble2. Prevent the use of too much pressure3. As in (2) & prevent further turning of the

thimble after correct pressure has applied (*)

4. All above correct

16. If a micrometer having negative error then the amount of error

1. Must be added to the final reading (*)2. Must be subtracted from the final

reading3. Must be corrected before taking any

other reading4. Both 2 & 3 are correct

17. Precision instruments are normally made of

1. Tempered steel2. Hemonic metal3. Nichrome steel or Inver steel (*)4. Stallite

18. In pentad

1. Screen grid is placed between suppressor grid & control grid (*)

2. Control grid is placed between suppressor grid & screen grid

3. Suppressor grid is placed in between control grid & screen grid

4. There is no suppressor grid

19. Zener diode are used for

1. Voltage regulation 115 CORRECT ANSWER IS MARKED * AT END


2. Some times called break down diode3. Both 1 & 2 are correct (*)4. Converting ac into dc with mechanical

aid

20. Voltage induced by generator is maximum when loop is

1. Perpendicular to the lines of force2. Parallel to the lines of force (*)3. Coming away from lines of force4. Going towards the line of force

21. A two pole alternation having 1800 rpm has frequency of

1. 60 cps2. 120 cps3. 30 cps (*)4. 90 cps

22. Inverter are producing current at frequency of

1. 300 cps2. 400 cps (*)3. 200 cps4. 450 cps

23. Ball bearing can take

1. Radial load only2. Axial load only3. Both radial & axial load (*)4. It takes thrust only load

GENERAL PAPER – 1991

1.ATA 100 specificatio9ns chapter 31 indicating

1. Ice & rain protector2. Indicating & recording (*)3. Landing gear4. Flight controls

2.Circular magnetization is used for

1. Detecting cracks running perpendicular to the axis of the part

2. Detecting cracks running parallel to the axis of the part (*)

3. Detecting cracks which is al. angle to the axis of the part



1. Fatigue cracks are normally formed on parts that are in services but not on new parts

2. Fatigue cracks give sharp clear pattern3. Fatigue cracks are normally found on

L/G torsion link legs attachment point4. All of the above is correct (*)

4.Intergranular corrosion occurs due to

1. Lack of uniformity in the alloy structure2. As in (1) & is difficult to detect in its

original state (*)3. Combine effect of tensile stress &

corrosive environment

5.Mark the correct statement1. As length increases for a given size of

wire the resistance increase2. As size of wire increase for a given wire

length resistance decrease3. As size of wire decrease for a given wire

length resistance decrease4. Only 3 is wrong (*)

6.A resistor if second color land is brown then

1. It will indicate the age of tolerance of brown

2. It will indicate the ohmic value of brown (*)

3. No tolerance4. It will indicate the number of zero to be

added

7.Fuses are normally made up of metal having low melting point statement is rue

1. Low melting point material is alloy of tin & bismuth

2. If fuses made of copper than it is called current limiter

3. As 1 & 2 & fuses are installed in the circuit so that all the current must pass through it

4. All the above is correct (*)

8.Micro switches are mostly used in a/c, making contact open or close movement is about

1. 1/8 inch or less2. 1/6 inch or less3. 1/16 inch or less (*)4. ¼ inch or less



9.Which equation is used to find out capacitive reactance

1. Xc = 2 fc2. Xc = ½ fc (*)3. Xc = 2 /fc4. Xc = ¼ fc

10. The minimum thickness which can be measured by fealer gage is

1. 0.0020 inch2. 0.0015 inch (*)3. 0.015 inch4. 0.001 inch

11. Steel containing 0.7 to 2% carbon is known as

1. Plain carbon steel2. Medium carbon steel3. High carbon steel4. Cast iron (*)

12. Which statement is correct for flame hardening

1. Normally carried out in shafts, chains2. Normally carried on parts where only a

portion is required to be hard (*)3. The main disadvantage of this method is

that the time required for the is much more

4. All are correct

13. Which statement is correct in case of introducing hardening

1. Heating the metallic substance by means of alternating magnetic field

2. The depth of the case depends upon frequency intensity of the em field but not on time period

3. With this method property of core material is not affected

4. All are correct (*)

14. Which statement is true regarding titanium

1. Ti is approx. 70% heavier than Al & 50% lighter than stainless steel

2. Fatigue resistance of Ti is greater than Al & less than steel

3. Corrosion of Ti is uniform4. Both 1 & 2 are correct (*)

15. Magnetic is

1. The process in which the parts are magnetized

2. The process in which the parts are magnetized out the magnetic power used in select the flow is fluorescent

3. As in (2) & will glow under black light (*)4. All are wrong

16. In lead acid battery the positive plate & the negative plate is made up of

1. Positive plate is made up of lead while negative plate is made up of lead sulphate

2. Positive plate is made up of lead while negative plate is made up of lead peroxide

3. Positive plate is made up of lead peroxide while negative plate is made up of sulphate

4. Negative plate is made up of lead peroxide while positive plate is made up of sulphate


TITANIUM BEARING GEAR1. Ni-Cr steel Non – magnetic Teeth2. Teeth Ni – Cr Non – magnetic3. Non – magnetic Ni – Cr Teeth (*)4. Teeth Ni – Cr Non – magnetic

18. During carburizing which gas is emitted

1. Carbon di oxide2. Carbon mono oxide (*)3. Carbon tetra chloride4. None above correct

19. Cold water quenching is normally carried out for the parts produced from

1. Tubing2. Forging3. Extrusion4. All above is correct (*)

20. Arrange the metals are put their increasing order of conductivity

1. Iron < Al < Nl < Cu2. Al < Iron < Ni < Cu3. Iron < Ni < Al < Cu (*)4. Iron < Ni < Cu < Al

21. In instrument range marking a yellow color indicates



1. Permission limit2. Cautionary range & take off range (*)3. Operation permissible for few time4. Operation with certain precautions


1. Instrument panels are normally made f non-ferrous material

2. Panels are usually shock mounted to absorb low frequency, high amplitude shocks

3. No. of shock mount used are depend on length of the unit

4. All are the correct (*)

23. Nickel alloy chisels are normally sharpened by

1. Grinder2. Filling (slowly to avoid sparking)3. Both 1 & 2 are correct4. Cannot be sharpened

24. Screw driver can be classified according to its

1. Shape2. Type of blade (*)3. As 1 & blade length4. Both 2 & 3 are correct

25. In gas welding of oxygen & acetylene regulators has

1. Left hand thread & right hand thread respectively (*)

2. Right hand thread & left hand thread respectively

3. Both have left hand thread4. Both have right hand thread

26. Pull through rivets are fabricated in two common head styles

1. Universal head / protruding head2. Brazier head3. 100 countershunk head4. Both 1 & 3 are correct (*)

27. A rivet head having raised cross indicating

1. 5056 T (*)2. 2024 T3. Carbon steel4. Corrosive resistant steel

28. Which turn lock fastener contains stud assembly grammet & receptacle

1. Air lock2. Cam lock3. DZUS4. Both 2 & 3 are correct (*)

29. Mark the wrong statement

1. Helicoils are made of 18 – 8 stainless steel

2. Screws comes in AN 500 NAS 200 series

3. Dia of nut is measured in 16th of an inch4. Lockwashers should be used only with

secondary structure not with present (*)

30. A/C bolts having two dash on its head indicating

1. Corrosion resistant2. Al-alloy3. 2024 bolts4. Both 2 & 3 are correct (*)

31. Corrosion on Mg-alloy is indicating

1. White spots (*)2. Green spots3. Blueish spots4. Yellow spots

32. Solution heat treatment & then cold worked is indicated by

1. T2

2. T3 (*)3. T4

4. T5


1. Electron A – Al2. Alduminium B – Mg3. Duralumin C – Al4. Al clad D – Al

1. 1 – A, 2 – D, 3 – C, 4 – B2. 1 – B, 2 – D, 3 – C, 4 – A3. 1 – C, 2 – D, 3 – A, 4 – B4. 1 – D, 2 – C, 3 – A, 4 – B

34. In brinell tester dia of the ball is

1. 10 mm & apply pressure of 8000 kg for ferrous metal

2. 0.3937 inch & apply pressure of 8000 kg for ferrous metal



3. 10 mm & apply pressure of 500 kg for non-ferrous metal (*)

4. All are correct

35. In case of torque wrench, the

1. The basic formula for use with extension is Tw = Tex A/B (*)

2. The basic formula for use with extension is Tw = Twx A/B

3. The basic formula for use with extension is Tw = Twx B/A

4. The basic formula for use with extension is Tw / Twx B/A

36. Lock bolts are normally used for

1. L/G, fitting, fuel line fitting2. Primary controls3. Wing splice fitting, skin splice plates

longerons4. Both 1 & 3 are correct (*)

37. The most commonly used composite material is

1. Kevlar2. Carbon / graphite (*)3. Fibre glass4. Boron

38. Buttress threads are normally used

1. Where a thread requiring great strength in one direction only

2. To vice, guns etc.3. Where it is necessary for transmitting

power in either direction 4. Only 3 is wrong (*)

39. In transition fit

1. Shaft is longer than the hole2. Shaft is smaller than the hole3. Shaft & the hole are approx of same

size4. All the wrong

40. There is a difference between AN & AN fitting which is correct

1. AN has gray color while AC has yellow color

2. AN has the gray color while AC has the blue color

3. AN is longer while AC is shorter (*)4. As inm 2 & AM has 35 angle & AC has

37 angle

41. Cotter pins are normally made of

1. Cadmium plated high carbon steel2. Cadmium plated low carbon steel3. Corrosion resistant steel4. Both 2 & 3 are correct (*)


1. Parker – kalon Z – type sheet metal screw is a self tapping screw

2. Parker – kalon Z – type sheet metal screw are blunt on the end

3. As in 2 nad are normally used for temporary attachment

4. All are correct (*)

43. Cotter pins are normally made of

1. Cadmium plated high carbon steel2. Cadmium plated low carbon steel3. Corrosion resistant steel4. Both 2 & 3 are correct (*)

44. How much thread should be exposed after lightening the turn buckles

1. Atleast three threads2. Less than three threads3. Not more than three threads (*)4. Not less than three threads & not more

than five threads

45. In annealing parts most be cooled in

1. Still all2. Furnance (*)3. Brine4. Oil


1. Impact resistance decreases as metal goes softer & softer & vice

2. Impact resistance increases as metal goes softer & softer & vice

3. Impact resistance increase as metal goes harder & harder & vice

4. Impact resistance decrease as metal goes harder & harder & vice

5. 2 & d are correct (*)

47. Which formula is used for calculating the inside dia of an internal gear

1. Ng – Np/2c2. N – 2/DP (*)3. PD – 2/DP4. Ng – Np/2p5. Ng – Np/DP



48. Trammel is also called

1. Circle maker2. Divider3. Beam compass (*)4. Both 2 & 3 are correct

49. When thimble makes one complete revolution it moves on the sleeve

1. 0.40 inch2. 0.25 inch3. 0.025 inch (*)4. 0.0025 inch

50. Surface plate is made of

1. Cast 2. Granite3. Nimonic alloy4. Both 1 & 2 are correct (*)

51. Vice can be classified according to

1. Reference number (*)2. Length of the jaw3. Weight of the vice4. Both 1 & 2 are correct

52. Parcoluburizing is carried out on

1. Iron & steel (*)2. Mg-alloy3. Al-alloy4. All above the wrong

53. Kelvar is identified by it's

1. Black color2. Yellow color (*)3. White glaming color4. Brown color

54. Thread running at 45 from warp is known as

1. Weft2. Bias (*)3. Selvage edge4. None of the above

55. MEK is used

1. For cleaning dust, grease from composite component (*)

2. For cleaning all parts3. For cleaning any parts4. For cleaning electrical equipment

56. Mark the incorrect choice

1. A fine Al screen may be laminated under the top layer of fabric dissipate electrical charge.

2. Microballons are mixed with regin to add strength (*)

3. PVC can be cut with a hot wire cutter4. Tedlar is a layer of plastic coating which

serves as an addition moisture barrier.

57. Variation in uniformity on the cylindrical surface can be checked by

1. DTI (*)2. Center square3. Square gage4. Hermphrodite caliper


1. Letter A on the drill indicated smallest size while letter Z indicated the largest size (*)

2. Letter Z on the drill indicated smallest size while letter A indicate the largest size

3. The algebric difference between main limit and the basic size is low as lower deviation


59. The pressure angle of a gear teeth is

1. The angle between the tangent to the pitch circle & the perp line the contact point of the gear teeth (*)

2. The angle between tangent to the line of contact perp to the pitch circle

3. The angle between the line perp to the pitch circle & line of contact

4. All the wrong (*)

60. The binary equivalent of 29 is

1. 11101 (*)2. 101013. 100114. 11111

61. An altimeter consist of

1. Two aneroid capsule2. Pressure cutting knob for adjusting

barometric pressure3. Three aneroid capsule4. All of the above (*)

62. An altimeter consist of



1. Two aneroid capsule2. Pressure cutting knob for adjusting

barometric pressure3. Three aneroid capsule4. All of the above is correct (*)

63. Most headless notch screws are turned by

1. Screw driver2. Phillips screw driver3. Internal screw driver4. Allen wrentch (*)

SEPTEMBER 1994

1.Aviation snaps are used on

1. Heat treated Al alloy sheet (*)2. Stain steel3. Fibre4. All of the above

2.Soldering used for electrical connections has the MP range

1. 100 degree to 200 degree C (*)2. 100 to 300 degree3. 300 – 600 degree C4. 200 – 300 degree C

3.Helical grars are used for

1. Transmit motion to shaft at an angle2. Transmit motion to shaft which are

perpendicular together3. To carry larger load (*)4. None of the above is correct

4.The heat conductor available during all features in aircraft used is

1. Copper2. Aluminium3. Bras4. Silver

5.The most accurate system for drill size is

1. Friction (1/16 inch – 3 & ½ inch)2. 1/63 inch to 1/63. a to z letter system4. No 80 to no 1 system (*)

6.In a vernier scale 24 division are equal to 25 division of vernier scale, 1 centimeter of main scale is divided 20 equal parts & the least count.

1. 0.001 cm2. 0.002 mm3. 0.02 mm (*)4. 0.009 cm

7.In vernier macrometer 9 parts of main scale is divided into 10 parts of vernier scale the main scale has the graduations of 1 mm find the length count.

1. 0.01 cm2. 0.001 cm3. 0.09 mm (*)4. 0.009 mm

8.SCR is

1. Four junction diode2. Three junction diode3. Two junction forward biased with one

reverse biased4. 2 & 3 are correct (*)

9.The triode consists of

1. Anode, grid, heater2. Plate, grid & heater3. Anode, plate, grid heater, & cathode4. Plate, cathode, heater & fine mesh of

wore between plate & cathode (*)

10. The zenor diode

1. Is used as rectifier2. Is used for voltage regulation (*)3. Is used for motor protection & in clippin

circuit4. Both 2 & 3 are correct

11. Static vents in pitot static system are located with

1. From at aluminate ice2. To aluminate ice formation3. To eliminate position error (*)4. All of the above is correct

12. Toflon hose is

1. High strength2. High temperature resistance3. 1 & 2 are correct (*)4. None of the above is correct

13. X-ray used in N.D.T. inspection

1. Have short wave length high protecting power (*)

2. Have a long wave low protecting power 115 CORRECT ANSWER IS MARKED * AT END


3. 1 & 2 are correct4. None of the above

14. The cause of buckling of sheet is

1. Small hole (*)2. Long hole3. Hammering4. Heat

15. The repair a crack the joint is to be formed

1. Lap joint2. Butt joint (*)3. Tea joint4. Corner joint

16. To suit the welding torch

1. Cylinder vale should be closer first2. Accetelene cylinder valve is close first

(*)3. Both the close simultaneously4. Accetelene cylinder pressure is reduced


1. During all stages of battery servicing2. When battery is over heated3. During charging operation of the battery

(*)4. During discharging operation of the

battery

18. Magnesium is

1. Susceptible to corrosion2. Corrosion resistant & light weight3. High, tendency to crack4. 1 & 3 are correct (*)

19. When switch Mg is open voltmeter indicator 1.5 v & when close indication 1.35 v current is lamp. What is the internal resistant of battery:

1. 1 ohm2. 0.15 ohm (*)3. 1.35 ohm4. 1.50 ohm

20. The altemeter is checked by when barometer is not available

1. Micromonometer2. Vacuum Chamber

21. The identical insulated wire coils are hung from air to that the facing each otehr & supplied with same directing AC.

1. Both are attracted to each other (*)2. Both are repelled3. Clockwise rotation4. Anticlockwise rotation

22. Which of the following has negative coefficient of resistance

1. Thermistor (*)2. Transistor3. Semi conductor4. Resistor

23. In a 4 stroke cycle the spark plug fires for every

1. 4 revolution of crank shaft2. 2 revolution of crank shaft (*)3. 1 revolution of crank shaft4. 360 degree revolution of crank shaft

24. If a wire having a resistance of 9 ohm is increase its length twice, then new resistance is

1. 1 ohm2. 8 ohm (*)3. 6 ohm4. 4 ohm

25. If resistor of 30 ohm are connect & battery voltage is 2 v then a meter reads

1. 1/10 A2. 3/10 A3. 7/10 A4. None of the above is correct (*)

26. Identification of titanium

1. Spark2. Not standing & making in glass3. Acid best4. Both 1 & 2 are correct (*)

27. In floroscent dye penetrant test the colour of the light use in the part inspected

1. Green color in black light2. Green color in white light3. Ultra violet in white light (*)4. Red color in white light




1. Diode is used as a rectifier (*)2. Tiode is used as a rectifier3. Diode is used as a amplifier4. All of the above is correct

29. Cleaning of titanium surface

1. Iron scrappers2. Steel3. Mild aspiration or hand plashed with

aluminium (*)4. All of the above is correct

30. The NPN transistor

1. Flow of electrons from emitted to collector

2. Holes move from collector to emitter3. Flow of electron from base to emitter4. Flow of electron from emitter to base (*)

31. In triode grid

1. Controls the electron flow cathode to plate (*)

2. Resource space charge3. It increase admission of electrone from

cathode4. Prevent secondary emission

32. Al alloys are welded with

1. Oxidizing flame2. Reducing flame3. Neutral flame (*)4. Reducing flame but in first flame is


33. Brass & bronze are welded with

1. Oxidizing flame2. Neutral flame3. Reducing flame4. Reducing flame but first the flame is


34. The check interior surface condition of cylinder & surface instrument used is

1. Boroscope2. Fluroscope3. Endoscope or introscope4. All of the above is correct (*)

35. The primary is subjected to 220 v & secondary is step down to give an

output of 11 v & primary circuit is 5 amp & secondary current is 90 amp the step down transformer.

1. 302. 403. 04. 90 efficiency (*)

36. Annealed metal is

1. To soft2. Low strength3. Relieved internal stresses4. All of the above is correct (*)

37. Barcol tested is used for

1. Steel2. Al alloy3. Titanium4. As in (2) & copper (*)

38. Rockwell tested measure

1. Resistance to penetration (*)2. Diameter of impression3. Size of identification4. None of the above is correct

39. PN Junction is used as

1. Rectifier (*)2. Amplifier3. Oscillator4. None of the above is correct

40. The CP of bavel gear is

1. Teeth per inch 2. The distance from the center of one

teeth to another teeth measure pitch circle (*)

3. The distance from the centre one teeth to center of next teeth


41. The binary expression for 296 is

1. 1010111012. 100101000 (*)3. 1110011004. 110010111

42. The nd of TPI are measured by

1. Screw pitch gauge (*)2. SWG (Standard Wire Gage)3. Thickness gauge4. None of the above is correct



43. The output of an OR gate will be given

1. When all the input are energized2. When all the inputs are zero3. Anyone of the input is energized4. 1 & 3 are correct (*)

44. Computer consist of

1. Printer, decode, memory2. Input, output, CPU (*)3. Input, output, printer4. None of the above is correct

45. The decimal number for 10111011101 is

1. 15022. 15003. 1501 (*)4. 1600

46. O-rings are checked for internal cracks by

1. 4 power magnifying glass2. By rolling on inspection cone3. By rolling on inspection dowel4. All of the above is correct (*)

47. Radiography depends on

1. Size of & shape2. X-ray3. Thickness of material4. All of the above is correct (*)

48. Bavel gears used for

1. Transmission of loads for between surface at angles to ech other (*)

2. For a variation of speed3. In speed reading 4. 1 & 3 are correct

49. The DP in a gear indicates

1. Number of teeth per inch2. Size of gear teeth3. Both 1 & 2 are correct (*)4. None of the above is correct

50. In the case of AC circuits ohm's law hold for

1. Peak values of voltage & current2. Effective value of voltage & current (*)

3. Instentenneous value of voltage & current

4. All of the above are correct

51. In purely inductive circuit the current

1. Lags behind the voltage by /2 (*)2. Loads the voltage by II/1 Capacitive

circuits3. Is in phase with the voltage4. Legs behind the voltage by II/2 at high

frequency

52. The magnetude of the induced emf produced in all coil when a magnet is inserted in to it does not depend upon the

1. No of turn in the coil2. Reactance of the coil (*)3. Magnetic moment of the magnet4. Speed of the rotation of magnet

53. Chocks is used as resistance in practical inductive reactance in choke & transformer

1. DC circuti2. AC circuit (*)3. 1 & 2 are correct4. Full wave rectifier

54. Memory of computer are

1. Rom, CPU, ALU2. Rom, Ram, Prom (*)3. ALU, Rom, Ram4. None of the above is correct

55. Stress corrosion occurs main on

1. Magnesium alloy2. Aluminium alloy (*)3. Stainless steel4. Both 2 & 3 are correct

56. Purpose of using flux in welding is

1. To reduce oxidation2. To provide flow to the molten metal3. To increase the bounding 4. All of he above are correct (*)

57. Optical instrument used to inspect the interior structure of a component is

1. Fluroscope2. Foroscope



3. Indoscope4. All of the above is correct (*)

58. The method of temper steel depends upon

1. Type of steel2. Size of steel3. Density of steel4. All of the above is correct (*)

59. In computers hard disk & floppy disk are

1. Different in used2. Similar but hard disk can store more

than floppy disk (*)3. Similar but hard disk can store less than

floppy disk4. None of the above are correct

60. Indicates on the tools are

1. Thread shank filler2. Tap, cutter, pilot3. Drill cutter4. None of the above

61. The gage shown in the sketch used for checking

1. Sheet on plate2. Average terminate3. Square4. None of the above is correct

62. Fretting corrosion normally

1. Occur around rivets in a skin2. Indicates by dart deposites3. Occur in only molecules4. 1 & 2 are correct (*)

63. The NDT check inspection is made in white light & dye used is

1. Gray2. Red (*)3. Black4. All are correct

64. Composite material

1. Have reduced wear2. Do not corrode3. Have high strength to weight ratio4. All above are correct (*)

65. An AC series circuit contains 4 ohms resistance & 3 ohm inductive

reactance what is the impedance of the circuit

1. 1 ohm2. 5 ohm (*)3. 7 ohm4. 7/R ohm

66. The sketch 52 indicates

1. All grains punch2. Prick punch3. Pin punch / drift punch4. Concer punch

67. The reading shown in micrometer is

1. 0.175 inch2. 0.175 inch3. 1.65 inch4. 1.35 inch

68. The transferring metal from one object to another by chemical or electrical process is done to protect the base metal

1. Against corrosion2. Increase strength to protect the base

metal against chemical reaction3. Wear 4. All of the above is correct (*)

69. To improve tensile strength, ductility & shock resistance, magnesium casting are normally

1. Case hardened2. Solution heat treatment (*)3. Precipetation heat treatment4. None of the above is correct


1. In electrolyte2. Lead acid battery3. In over heated condition4. After fully charged condition in Ni-cd

battery (*)

71.As per ATA 100, identification of a/c electrical cables, letter & size are marked

1. In the middle2. Side by side (*)3. Prefix & Suffix4. None of the above



72. In modern a/c most popular heat treated aluminum alloy used in structural application

1. Alloy 2024 (*)2. Alloy 50543. Alloy 50034. Alloy 7075

73.A coil is helped with a plain horizontal to certain surface & a bar magnet is dropped vertically downward

1. The magnet will fall with constant acceleration equal to 'G'

2. Constant acceleration greater than 'G'3. Constant acceleration less than 'G'4. Non uniform acceleration less than 'G'

(*)

74.The main control unit of computer is present in

1. VDU2. CPU (*)3. Keyboard4. Hard disk

75.While treating for magnetic testing it was found non magnetic, in nitric acid it was found rapid action, greenish blue

1. Nickel steel (*)2. 18 – 8 steel3. Monel 4. CRS

76.Analog computer is

1. More correct than digital computer2. Less accurate than digital computer (*)3. Both 1 & 2 are correct4. None of the above

77. In computer machine language is

1 High level language2 Low level language (*)3 Very high level language4 None of the above is correct

78.Decimal equivalent to binary number 110 is

1. 22. 33. 6 (*)4. 9

79.Aluminium alloy can be heat-treated

1. Solution heat treatment2. Precipitation heat treatment3. Both are correct (*)4. Artificial aging

80. In NDT inspection, performance of magnetic particle inspection can not effect by

1. Cadmium2. Copper3. Tin & zinc4. All of the above is correct (*)

81.Which language is the business oriented language

1. Pascal2. Basic3. Fortran4. Cobol (*)

82.The third generation computer

1. Integrated circuit are used2. Microprocessor are used (*)3. Semi transistor4. All of the above is correct

83.The unit of the memory is

1. Bite2. Bits3. Nibbles4. All of the above is correct (*)

84.Explain the ??? basic

1. Beginners all purpose symbol i.e. instruction code

85.The principle local carrying member in a composite structure is

1. Fibres (*)2. Matrix3. Adhesive4. Rasin

86. Intraply hybrid composites means

1. Inforcing material of same fibre in different layers

2. Reinforcing material woven from two more fibre types (*)



3. Reinforcing material different indifferent layer


87.Metal matrix composite is a recent composite material where in

1. Resin in reinforced with metal2. Resin & fibre & reinforced with metal3. Fibre are reinforced with metal during

melton stage4. All of the above is correct (*)

88.Replacement of honey comb core segment to the existing honey done with help of

1. Film form adhesive (*)2. Freeing adhesive3. Epoxy resin with fibre4. All of the above are correct

89.Two wires each a meter long are kept at a distance of 0.02 & 16.2 ampire current is flowing through each wire, then force the wire will be

1. Attractive if the direction of the current flowing through (*)

2. Repulsive if direction of current will be same

90. In computer memory store measured by

1. Byte / bit (*)2. Power3. Both 1 & 24. None of the above is correct

91.The thickness of conducting & non conducting is done by

1. Micrometer2. Eddy current (*)3. Ultrasound4. Caliper

92.Evidence of corrosion on copper is indicated by

1. Red spot on the surface steel2. Green spot in the surface (*)3. Grey spot on the surface4. None of the above is correct

93.Evidence of corrosion on Al, alloy is indicated by

1. More shining portion near the surface area

2. Grey spot3. Pitting on surface4. Power form (*)5. All of the above is correct

94.For high Al alloy the more suitable welding is

1. Seam welding2. Spot welding or butt welding (*)3. Electric resistance welding4. All of the above is correct

95.The measure skin thickness of hollow tubular member is normally done by

1. By distructing the tube2. By micrometer tube (*)3. Eddy current

96.The NDT radiography method the density means

1. Degree of blackness (*)

97.The computer mark the storage device

1. VDU2. Printer3. Mouse4. Floppy disk (*)

98.Expand the term Ram while loss the term 'Ram" means

1. Random access memory (*)

99.A lead acid cell contains

1. Positive plates cooted with lead aproxide

2. Liquid electrolyte consists of the sulphate & water

3. Negative plate made of lead4. Both 1 & 3 are correct (*)

100. Mark the correct statement is

1. AND gate is one whose output is energized when all energized

2. OR gate is one whose output is energized when more of the energized (*)

3. A gate is a logic circuit with one input are many output


101. In a double thread screw

1. Pitch is twice the load 115 CORRECT ANSWER IS MARKED * AT END


2. Load is twice the pitch3. Lead is twice the pitch (*)4. Thread depth is measured parallel to the

102. Indication for the dull drilline is

1. Rough finished hole2. High temp of the drill3. Low drilling speed4. All of the above is correct (*)

103. In NDT magnetic particle inspection cannot be done if the coating of

1. Copper2. Tin 3. Nickel & chromium (*)4. Zinc

104. In inspection of a material in non magnetic, nitric & rapid action shows greenish blue mark side for

1. Carbon steel magnetic2. Nickel steel (*)3. Monel4. 18 – 8 steel

105. One micron is

1. 10 cm2. 1.0 cm3. 10 mm4. All of the above is correct

106. In a vernier caliper, there are 10 clivisons on the vernier on the main scale is divided in 10 parts while measuring in zero of the vernier lies should of 1.8 cm & 4th division coinsided with a main scale division the length is

1. 1.84 cm2. 1.04 cm3. 1.86 cm

107. When the plate current is 16 amp, the number of electron flows

1. 10 – 8 electron / sec2. 10 ?? electron / sec3. 10 electron / sec4. None of the above is correct

108. Six equal resistance of 1 ohm each are connects in a circuit ABCDEF, the resistance offered by the

combination, if the current A & leaves at B is:

1. 2.5 ohm2. 3 ohm3. 1.5 ohm (*)4. None of the above is correct

109. A torch bulb when cold has 1 A current, it draws a current when growing from a source of 3 v, the resistance of bulb is

1. 52. 103. 64. 8

110. In a electron magnetic induction unit of magnetic flux is

1 Weber (*)2 Ampere x meter3 Newton / meter4 Newton

111. Mark the correct statement is

1. Rheostat is a variable resister used to vary amount of the circuit (*)

2. Potential meter is a variable resister used to vary amount in the circuit

3. Potentiometer has two terminals4. None of the above are correct

112. When 2 conductor of 1 mt in length carrying a current at 2 amp are .025 meter a part from each other

1. Conductor carrying current in the same direction will attract (*)

2. Conductor carrying current in the opposite direction will attract

3. No effect4. None of the above is correct

113. Unix is the

1. Double operating unit (*)2. CAD & record of engineering

organization3. None of the above is correct

114. The most powerful computer is

1. Micro computer 2. Super computer (*)3. Mini computer4. Laptop computer



115. Matrix is used to

1. Transfer stress to fibre (*)2. Take stress from the fibre3. Increase the hardness of adhesive4. None of the above is correct

116. Catalyst in a composite acts as

1. Hardener (*)2. Curing agent3. To increase the property of resin4. None of the above is correct

117. The used of grid in a triode is

1. To reduce space charge region2. To control the electron flow between the

cathode, & the anode 3. None of the above is correct4. 1 & 2 are correct (*)

118. The semi conductor having high negative co-efficient is

1. Thermister (*)

119. DP indicates in a gear for

1. Distance between two teeth2. Height of the teeth3. Pitch circle4. None of the above are correct (*)

120. Diode triode or transistor works on

1. Ohm's law2. Do not obey ohm's law (*)

121. Change 1010101 in decimal

1. 85 (*)2. .653. .1114. None of the above is correct

122. PN junction is knows as

1. Forward bios (*)2. Reverse bios

123. Counter sunk rivet:

1. When riveting different layers of sheets

124. In a step down transformer the input voltage is 220 v & current 5 A & the output voltage is 11v & the current is

90 A, the calculate the efficiency of the transformer

1. 30%2. 90% (*)3. 60%4. 70%

125. In a given circuit 1.4 A current flowing from point A. what is the current at point B

1. a.4 A2. 1.03. .6 A4. 1.2 A

126. EDP stands for in computer

1. Electrical data processing2. Electronic data processing (*)3. Entry data processing4. Electronic discrete program

127. Electronic digital computer

1. Mathematical calculation2. Data processing3. Stress data in given instruction4. All of the above are correct (*)

128. (010100)2 convert into octal

1. (24)8 2. (15)8

3. (26)8

4. (50)8

129. Fillers is

1. Epoxy2. Cellulose (*)3. Polyester4. Boron

130. Which statement is true for leveling

1. Leveling of large a/c is critical than lighter a/c (*)

2. Leveling is done normally on longitudinal axis

3. Leveling is done more accurate on lighteral axis


131. The difference between digital & analog computer

1. Analog computer has large memory



2. Digital compute cost more & in comparatively difficult to program

3. Analog computer is less accurate (*)4. 2 & 3 are correct

132. Excess size of computer depends upon

1. Software used2. Frequency & signal received3. To software & hardware both4. Hardware (*)

133. The greatest memory of which device

1. Winchester type device disks (*)2. Tape type recording instrument3. Floppy disk unit4. None of the above is correct

134. Which are related to the memory

1. Hard disk (*)2. Keyboard3. CD – Rom4. Monitor

135. If twist drill is not printed clearly, it can be checked by

1. Drill size gauge number system on left & fraction system on right

2. Drill size gauge with number system on right fraction on left

3. SWG4. By micrometer (*)

136. Mark correct statement

1. A transistor connected in common base configuration has a low input resistance & high output resistance

2. At transmeter connected in common emitter configuration a medium input resistance & a output resistance

3. The input & output signals of a common emitter are out of phase

4. All the above are correct

137. The arrow head on the transistor symbol always pointing the direction of

1. Hole flow (*)2. Electron flow3. Electrons are the majority carrier4. Holes are the majority carrier

138. The energy loss in a transformer is due to

1. Heating the coils2. Eddy current in the core3. Low permeability of ferro magnetic

substance4. Both 1 & 2 are correct (*)

139. A computer stored instruction in

1. English language2. Decimal number system3. Octal number system4. Binary number system (*)

140. An input unit of a computer communicate

1. Between operate and computer (*)2. Between memory with printer3. Between cpu with monitor4. Between output and computer

141. For jacking the a/c

1. Normally the jack points are given in all a/c

2. Three points on a/c for jacking is provided to stabilize the a/c about three points

3. Jacking points are located in relation to CG position

4. All the above are correct (*)

142. In ATA specification the electrical cable number is instructed as

1. Prefix suffix2. In iddle3. Side & side4. All of the above are correct

143. Thread in deep holes are cut by

1. Extension tap (*)2. Round split die3. Bottoming tap4. 1 & 3 are correct

144. Size of flat cold chisel is identified by

1. Length of cutting edge2. Width of cutting edge (*)3. Weight of the chisel4. All of the above are correct




1. Corrosion on carbon steel is in form of brown, red color (*)

2. Corrosion on CBS in sheets dimeling is the necessary

OCTOBER / SEPTEMBER 1996

1. In transformers, mark the correct statement

1. If any of windwings are shorted, it is easy to detect by measuring resistance

2. In case if shorted windwing, the transformer becomes hot

3. If there is shorted windwing, the output voltage will be very high


2. If the frequency of the primary voltage of a transformer is increased from 50 Hz to 60 Hz, keeping peak voltage same, the voltage in the secondary will

1. Increase by a factor of 60/502. Increased by a factor of 50/603. Be unpredictable for want of sufficient

data4. Not change (*)

3. 'n' identical cells, each of the emf E & internal resistance r, are connected in series to form closed circuit. an ideal voltmeter connected across 'n' cells will be

1. NE (*)2. Zero3. (n – N)E4. N (1 – N/n) E

4. Very high insulation resistance of electric cable is measured by

1. Meggar (*)2. High range ohm meter3. Ammeter4. Voltameter

5.When batteries are connected in parallel

1. Voltage increases, capacity remains the same

2. Voltage remains same but capacity increases (*)

3. Voltage depends upon plate area4. No effect on either powder or voltage

6.To increase the voltage of battery

1. Cells are connected in series (*)

2. Cells are connected in parallel3. Plates are connected in series4. Electrode area is increased

7.Voltage drop across a conductor of known resistance depends on

1. Current flowing inside the current2. Voltage of circuit 3. The amount of thickness of wire

insulation (*)

8.E – glass is

1. Also known as electric glass2. Also known as borosilicate glass3. Has low strength & weight ratio 4. All of the above is correct (*)

INDIAN INSTITUTE OF AERONAUTICS

COMPUTERS

1.A computer in a / an

1. Mechanical device2. Electrical device3. Electronic device (*)4. Electromechanical device

2.A 'Flow chart" is a

1. Step wise representation of a programme

2. A systematic pictorial representation of a programme

3. Is a kind of programme written in high level language

4. Either 1 & 2 are correct (*)

3.A digital computer can be operated with

1. Only numerical data (*)2. Only non numerical data3. Both numerical & non numerical data4. Neither numerical nor non numerical

data

4.Algorithm is a

1. Pictorial representation of a programme2. A stepwise systematic representation of

a programme (*)3. High level language to represent a

programme systematically4. Assembly language to represent a

programme systematically

5.The most powerful of the following: 115 CORRECT ANSWER IS MARKED * AT END


1. Minicomputer2. Microcomputer3. Mainframe4. Supercomputer (*)

6.Main difference between PC / ATI & PC / XT are

1. PC / AT has much more memory than PC/XT

2. PC/AT has much more speed than PC/XT

3. PC/AT has multi terminal facility & PC/XT has only single terminal facility

4. PC/XT has multi terminal facility & PC/AT has single terminal facility (*)

7.Binary equivalent of 0.625

1. 0.010102

2. (0.101)2

3. 0.11002

4. 0.010112

8.If the inputs of a gate are A & B & its output is A + B the gate is

1. OR gate (*)2. AND gate3. X-OR gate4. X-NOR gate

9.The given truth table is for

A B C1 1 10 0 10 1 01 0 0

1. XOR gate2. XNOR gate (*)3. NAND gate4. OR gate

10. 2 complement of the binary digit is

1. 01 (*)2. 13. 104. 0

11. XOR gate is

1. A parallel switching circuit with exclude condition (*)

2. Series switching circuit with exclude condition

3. Parallel switching circuit4. Series switching circuit

12. Find the odd man out

1. ALU, Memory, Counters2. CU, Floppy disket, registers (*)3. Control unit, MPU4. ALU, auxiliary memory

13. The CPU of the 4th generation computer is

1. An IC chip using VLSI technology2. Microprocessor3. Both 1 & 2 are correct (*)4. None of the above is correct

14. INTEL is a company involved in the manufacturing of

1. Printers2. Storage devices3. IC Chip4. All of the above is correct (*)

15. Bill gates is the chairman of

1. IBM2. Microsoft (*)3. Intel4. Motorola

16. The company Microsoft is involved in

1. Making of computer hardware2. Making of computer software3. Both 1 & 2 are correct (*)4. None of the above are correct

17. The fastest of the following is

1. 80286 processor2. 80386 processor3. 80436 processor 4. Pentium processor (*)

18. The main memory of the computer is

1. RAM2. ROM3. Hard disk (*)4. CD

19. RAM is

1. Volatile semiconductor memory2. Read/write memory3. Random access memory



4. All of the above are correct (*)

20. ROM is

1. Read memory (*)2. Write memory3. Both 1 & 2 are correct4. None of the above are correct

21. EPROM can be erased by

1. Sodium light2. uv rays3. Electrical pulses4. Either UV rays or electrical pulses

22. The fastest memory of the following

1. RAM2. ROM3. Cache4. Hard disk

23. The main memory of a computer is located in

1. The hard disc (*)2. Compact disk3. Floppy disk4. None of the above are correct

24. ROM is

1. Volatile semi conductor memory2. Non volatile semi conductor memory (*)3. Magnetic memory4. All of the above are correct

25. The processing of the CPU is in the order of

1. Millisecond2. Microsecond3. Nanosecond (*)4. Megasecond

26. DRGM is

1. Semi conductor memory2. Volatile memory3. Has to be coefficiated with the data

after a certain interval of time4. All of the above are correct

27. 1 KB is equal to

1. 1000 bytes (*)2. 2 bytes3. 1000 MB4. None of the above are correct

28. A nibble is equal to

1. 8 bits2. 4 bits (*)3. 2 bits4. 16 bits

29. The fastest component of the computer is

1. CPU (*)2. Computer memory3. Storage devices4. Input / Output devices

30. Locate the odd man out

1. Hard disk2. Floppy disk3. Magnetic tape4. Compatt disk

31. Compact disk is a

1. Semi conductor device2. Magnetic device3. Optical device (*)4. None of the above are correct


1. OBR2. OMR (*)3. OCR4. MICR

33. Floppy diskett is a

1. EPROM2. RAM3. EEPROM4. Flexible storage media (*)

34. The slowest of the following is

1. Hard disk2. Floppy disk (*)3. CD4. Magnetic tape

35. CDROM is released by

1. ---2. Infrared light (*)3. Electrical package4. By appropriate programming only

36. Modem is an



1. Input device2. Output device3. Input / Output device (*)4. None of the above are correct


1. Dot matrix printer2. Inkjet printer3. Chain printer4. Drum printer (*)

38. Optical scanner is a

1. Input device (*)2. Output device 3. Input / output device4. None of the above are correct

39. A software is a

1. Set of programmes2. Set of instructions3. All of the above are correct (*)4. None of the above are correct

40. Disk operating system is

1. A system software2. Software environment3. Software utility package4. A high level language

41. Computer virus is a

1. Software programme (*)2. Hardware programme3. Machine language4. Assembly language

42. Assembly language is

1. Low level language2. High level language (*)3. Machine language4. All generation language

43. Which of the following language used memories

1. Machine language2. Assembly language3. High level language4. All generation language (*)

44. Vol storages are those from where data are lost

1. When the programme is over

2. With respect to time3. When the power is shutoff4. All of the above except c


1. Light pen2. Plotter (*)3. Mouse4. Joystick

46. The 'Printed document" in computer terminology is termed as

1. Soft copy2. Hard copy (*)3. Firm copy4. Live copy

47. The display of MONITOR of a computer system is mostly

1. Semi conductor display2. LED type display (*)3. LCD type display4. Electron beam type

48. Choose the correct statement among the following

1. Line printer is non impact printer2. LASER printer is a non impact printer (*)3. DOT matrix printer is non impact printer4. Character printer is faster than line

printer

49. Printer is connected through

1. Parallel port2. Serial port3. Both 1 & 2 are correct (*)4. None of the above are correct

50. The screen in the laptop computer is

1. CPT2. LCD3. Semi conductor display4. All of the above are correct

51. Which of the following is fixed disk drive

1. Hard disk drive (*)2. Floppy disk drive3. Winchaster disk drive4. CD-ROM drive

52. Unix is a



1. A software2. A programme3. Multiuser operating system (*)4. All of the above are correct

53. Assembler is

1. A software2. A translator (*)3. A programme4. All of the above are correct

54. High level language are

1. Machine dependent2. Machine independent3. Language in which programme is done

in 1 & 04. Both 2 & 3 are correct (*)

55. Interpreter in computer field is a

1. Software (*)2. Floppy3. Hardware4. The special electronic circuit which

translate high level to low level

56. Internet system is based on

1. WAN system (*)2. LAN system3. Mainframe computer system4. Many computers connected to a other

computer

57. GUI stands for

1. Graphical user interface (*)2. Graphical user internet3. Graph & user interface4. Graph & user internet

58. Y2K problem is a

1. Software problem2. Hardware problem3. Data problem (*)4. All of the above are correct

59. Virus affects

1. Hardware2. Software3. Both 1 & 2 are correct (*)4. None of the above are correct

60. Anti virus software is

1. Dreaded software2. Software to scan & remove virus (*)3. Package4. None of the above are correct

61. Which of the following is a scientific language

1. COBOL2. ADA (*)3. FOPTRAN4. BASIC

62. Which of the following is not a language

1. FOXPRROT2. LISP3. C4. VISUAL C++

63. Pick the odd man out

1. DOS2. UNIX3. WIN – 954. DBASE

64. A package is a

1. Software2. Set of instruction3. A programme4. All of the above are correct (*)

65. Windows 3.1 is a/an

1. Operating system (*)2. Operating environment3. Package4. Language

66. Which of the following is not a high level language

1. Basic2. C3. Assembly4. Cobol5. None of the above are correct

67. Which of the following is not a high level computer language

1. Windows (*)2. Visual C++3. Coral4. Pascal

68. DOS stands for 115 CORRECT ANSWER IS MARKED * AT END


1. Data operating system2. Disk operating system (*)3. Diode operating system4. None of the above are correct

October 1998

1. In d.c. generator single plain coil is rectangle, coil is perpendicular to main flux, emf induced in coil.

1. Maximum2. Minimum3. Zero (No

Voltage) (*)4. None of the

above

2. In carbon pole voltage regulator carbon pile is

1. Granular Surface

2. Resistance between two carbon faces depends on area of contact

3. Resistance between two carbon faces depends on pressure of contact

4. All above correct (*)

3. In Nickle Cadmium battery specific gravity of electrolyte is

1. Unchanged (*)2. Gives number

indication of the state of the charge of the cell

3. All above are correct

4. In Lead – Acid cell grid plates alloy is

1. Lead2. Lead Peroxide3. Lead Antimony

(*)4. None of the

above

5. In a.c. circuit rms value divided average value

1. Creast Factor2. Amplitude

Factor

3. Form Factor (*)4. All above are

correct

6. Resistor colour coding is yellow, violet, orange will silver band.

1. 470 5%2. 47 5%3. 47000 5%4. 47000 10% (*)

7. Selenium rectifiers, base sheet material is

1. Selemium2. Germenium3. Alluminium (*)4. Cu

8. Selenium rectifiers when connected in series increases

1. Current handling ability of rectifiers (Inparallel)

2. Current and voltage handling ability of rectifiers.

3. Voltage handling ability of rectifiers (*)


9. Silicon rectifier (cathode) is made of

1. Silicon2. Germinium3. Copper (*)4. Alluminium

10. "Firing" term used in

1. Diode2. LED3. SCR (*)4. Transistor

11. In dot metric system use

1.2. 7 4 Led = 28

Segment3.

12. Transformer rectifiers secondary winding is connect in

1. Star2. Delta3. Star Delta (*)



4. Delta Star

13. In general services wiring which wire is suitable

1. PVC2. Glass Braid3. Nylon4. All above are

correct (*)

14. In high operating temperature which wire is use

1. PREN2. EFGLASS (*)3. TERSIL4. FEPSIL

15. In UNIFRE – 'F' conductor is

1. Aluminum Plating

2. Copper Plating3. Nickel Plated

Cu (*)4. Tinned Copper

16. Electrical Bonding

1. Limit potential difference between all parts

2. Eliminate spark discharge and fire risk.

3. Prevent the possibility of electrical shock

4. All above are correct (*)

17. ATA – 100 coding for cable 'Position 2' indicate

1. Functional Circuit (*)

2. Unit Number3. The segment of

cable4. None of the

above are correct

18. ATA – 100 coding for cable 'Position – b' (N) indicate

1. Neutral2. Phase3. Earth

Connected Cable (*)4. None of the

above are correct

19. In general electrical circuit

1. Switch in off2. De-energise

relay3. Close C.B.4. All above are

correct (*)

20. Co-axial cable

1. Shielded against electrostatic and magnetic field

2. Do not radiate, they will not pick up and energy

3. An electrostatic field does not extend beyond the outer conductor.

4. All above are correct (*)

21. Current Limiter

1. Low Melting Wire

2. High Melting Wire (*)

3. Thermal Device4. None of the

above are correct

22. In D.C. starter generator

1. Shunt2. Series3. Fully

compounded (*)4. All above are

correct

23. In D.C. shunt motor running at rated speed field winding is open, the motor is

1. Rotate at rated speed

2. Stopped immediately (*)

3. Slowly decrease speed

4. None of the above are correct


1. Nibble is half byte (*)

2.3.4.



25. In Lead – Acid Battery, spillage electrolyte is neutralize by

1. Ammonia & Water

2. Vinegar3. Bi – Carbonate

(Backing Soda) & Water4. 1 & 3 are

correct (*)

26. Printed circuit board made by

1. Lithographic2. Photographic3.4.

27. Light emitting diode

1. Conduct forward bias

2. Conduct reversed bias

3. 4 7 dot matrix = 28 diodes

4. 1 & 3 are correct (*)

28. In Servo Mechanism System gain B

1. Open loop2. Close loop (*)3. As in (1)

Negative feedback4. As in (2)

Positive feedback

29. Boolean algebra Theorems

1. A . = 12.3. A + = 1 (*)4.

30. In 16 bite hexadecimal

1. 2 162. 162

3. (*)

4. 2 + 16

31. Make the correct statement

1. LSI more than 100 gate (*)

2. MSI 12 to 99 gate

3. SSI gate using less than 10


32. Current flowing in a circuit having resistance of 8 inductive reactance of 12 and capacitive reactance of 18 , connected in series and across the supply of 20 v is

1. 1.5 amp.2. 2 amp. (*)3. 1 amp.4. 4 amp.

33. A transformer having primary turns of 2000 connect across supply of 250 v, give second output of 200 v. what is the number of turns in second.

1. 15002. 1000 (*)3. 20004. 1000

34. While working of Lead acid battery, electrolyte is touched to the eyes, whit will do ?

1. Rinse the eyes with plenty of water2. Eye rinse with solution of bicarbonate of

soda (*)3. Rinse the eyes with water & KOH.4. None of the above.

35. When megger is not in use, where its point is located.

1. Extreme right hand side2. Extreme left hand side (*)3. In centre4. None of the above

36. CE Transistor having highest.

1. Power gain (*)2. Current gain3. Voltage gain4. Input Impedance

37. Capacitance of a capacitor is measured by

1. Maxwell bridge2. Wheat stone bridge3. Schering bridge (*)



4.

38. Slip speed of motor having speed of 1440 rpm 50 Hz.

1. 1002. 60 (*)3. 504. 120

39. Synch speed of a motor having 4 poles, 50 Hz.

1. 1600 rpm2. 1500 rpm *3. 1200 rpm4. 2000 rpm

40. Energy stored in a inductor having inductance of 10 m H and current of 4 amp.

1. 160 milli joules2. 80 milli joules (*)3. 160 joules4. 1600 joules

October 2003

1. A resistance of 6 and inductance of 8 connected in series across 200 v. 50 cps power supply. Voltage drop across 6 res. Is

1. 200 v2. 60 v3. 120 v (*)4. 100 v5.

2. Two signals of same amplitude, frequency and phase difference forms lissijons figure of

1. Circle2. Straight line with angle of 453. Straight line with angle of 1304. Ellipse

3. Lap wdg is used for

1. High torque2. High voltage3. Low voltage4. Low current

4. Transistor connecting in which configuration having highest current gain.

1. Common base

2. Common collector3. Common emitter (*)4. None

5. In nodole analysis

1. Number of simultaneous equation to be solution becomes (n – 1)

2. Network Sh__________ atleast ______________

3. 1 & 2 are correct (*)4. None of the above

6. Peab value is

1. (*)

2.

3.

4.

7. Minimum distortion is achieved in

1. Class A (*)2. Class B3. Class A – B4. Class C

8. Power gain in a PNP Transistor is Maximum in

1. CC2. CB3. CE (*)4. None of the above

9. Voltage build up condition for shunt generator

1. Their must be sufficient diode at magnetism in the poles (*)

2. If excited on open circuit positive field resistance should be more then critical resistance.

3. If excited on load, field resistance should be equal to the minimum resistance.

4. All of the above

10. Conduction for half cycle is possible in

1. Class A amplifier2. Class B (*)3. Class C



4. Class D

11. Insulators have

1. Full valence bend2. Empty conductor bend3. High energy gap4. All of the above (*)

12. In a triode the usual working point on the slope called

1. Tube factor2. Tube coefficient3. Amplification factor4. All of the above (*)

13. Scott connection is used for

1. To convert 3 to 2 2. To convert 2 to 3 3. 1 & 2 4. To convert 3 to 3

14. Starting of slip ring induction motor by

1. Start 2. Tehostatic Control3. Resistance in rotor circuit (*)

15. Alternating values normally given in

1. r.m.s. (*)2. Av value3. Max value

16. Which winding is nearest to the core

1. L.V. (*)2. H.V.

17. Thickness of lamination reduced in xmer

low eddy current loss

1. Low eddy current loss (*)2. Hyst loss 3. Both4. None of the above

18. Depletion layer contains

1. Positive ions2. Negative ions3. 'C' & positive and negative ions (*)4. Fixed positive ions

19. In Lead – acid battery as temp increases

1. At high temp, electrical capacity of battery increases

2. High temp diffusion increases.3. At high temp performance improves4. All of the above

20. Unity power in

1. Resistive circuit (*)2. Series3. Parallel4. All above correct

21. Increasing Q factor

1. As inductance increases (*)2. Capacitance increases3. Resistance4. Resistance & low ohmic drop

22. Induction motor change in phase

1. Direction changes (*)2. Runs in some direction

23. Ballistic galvonometer is used for

1. Flux measurement2. As in 1 & _________ (*)3. Control spring __________4. Mag inertia ________

24. When magnetic material is heated

1. Curie point (*)2. Maxwell point

25. In starting of DC motor, no volt ____ is used for

1. To hold the arm2. Release the arm3. For overload protection

26. Generator will fail to start in which circumstances

1. Open circuit in field2. Reverse polarity3. Low speed4. 1 & 2 are correct (*)

27. Electrical characteristic of DC motor

1. Ta / Ia (*)2. Speed / T

28. Digital switching



1. Flip – flop2. Bistable multivibrator3. Debouncing4. All of the above (*)

29. Mark incorrect advantage of 3 supply to 1 supply

1. Saving in material2. Cost saving3. Efficiency better4. P - __

30. In connection

1. Voltage 120 apart (*)2. Current ____ by 303. Current lead by 304. 3 VLIC cos

31. In an a/c if actuator is moving so _________ and the feedback pcth not working then the system become

1. Open loop (*)2. Closed loop3. Cannot be counted as servo system

because servomotor not there.4. __________

32. In Feedback

1. Stability Increase (*)2. Stability Decreases

33. Maxterm

1. AND – OR invert logic (*)2. OR – AND logic3. AND – OR logic4. None of the above

34. + Q charge on solid sphere is

1. Equally disturbed throughout the surface (*)

2. Only on the surface3. Concentrated at centre

35. Electrostatic meters are used as

1. Voltmeter (*)2. Ammeter3. Ammeter, voltmeter, wattmeter

36. Stalling current is

1. When armature (load) current is zero (*)

37. In transformer core on load

1. Approximate some flux as on no load. (*)

38. In transformer at no load, current consists of

1. Reactive and active components (i.e. Iee & Iw) (*)

39. If by mistake during maintenance the armature wdg of motor is reversed then

1. Motor will not rotate in opp direction then it was previously rotating.

40. In case of syn motor when Eb = V motor is said to be

1. 100 % excited2. Overexcited with leading point3. Underexcited with leading point4. Underexcited with lagging point

41. In a 3 power system it wattmeters are removed, you can use which of the following for power ________

1. Three voltmeter method2. Three ammeter method3. Ballistic galvanometer4. 1 & 2 are correct (*)

42. Transistor common base configuration (Theraja)

1. High voltage gain (*)2. High power gain3. High current gain4. High resistance

43. Semiconductor doping conductivity

1. Increase (*)2. Decrease3. Decrease after certain temp.

44. LCD

1. Dynamic scattering2. Field effect3. ASCII4. Segmented type

45. LED emmits light when

1. Reversed biased2. Delation low increased3. Electro and hole are merged. (*)



46. CRT has electrode color given

1. 3 (*)2. 43. 24. None of the above

47. P Type semiconductor is doped

1. Germanium with Phosphorus2. Germanium with Antimony3. Germanium with Indium (*)4. As 1 & 2 are correct

48. Semiconductor doped with arsenic

1. P type 2. N Type (*)

49. Instrument panel lighting is done by

1. Intgranel light (*)2. Pillar3. Bridge high4. Trans illuminated

50. Cable insulator can with stand high temp and hydraulic fluid

1. Ny Vin2. Pren3. Tensil4. EFGlam (*)

51. Power supply system distribution

1. Parallel bus2. Split parallel bus fair

52. Kirchoff's Law applicable to

1. DC only (*)2. AC only3. AC & DC

53. IR voltage drop calculation consider

1. Battery communication2. Direction of current fluid.

54. Photo sensitive diode

1. When light falls emf generator (*)2. When light falls chemical section take

place3. High emits by current flows

55. If number of uniform wire and core length is double inductance will be

1. Double2. Half3. Quadruple (*)4. No Change

56. Triode gride is

1. Negative potential2. Positive potential3. Negative and more positive than

cathode (*)4. Negative and more negative than

cathode.

57. Landing gear selecting lever weak s/w is located at

1. Landing gear selecting lever2. Brace Strut3. Shock Strut (*)

58. Flaming left hand rule middle finger indicates

1. Direction of current (*)2. Torming direction3. Flux

59. Power of there phase circuit V3, VL, I2

cos , cos is angle between

1. Phase voltage and phase current (*)2. Line voltage and line current3. Phase voltage and line current4. Line voltage and line current

60. Mark the correct statement (906) pp barnad grobe

1. Nibler is half byte (*)2. 4 bits is one byte3. Nibler is 16 bits

61. Octal of Binary 10001012 is

1. 542. 45 (*)3. 37

62. Resistance of Bonding between two boted ________

1. 1 2. 0.5 3. .025 (*)4. 0.5 mega



63. Induced emf is depends on

1. Flux density2. Rate of change of flux linkage (*)3. Flux line cut

64. Capacitance dos not depend on

1. Plate area2. Dielectric material3. Thickness of plate (*)

65. If 1 w jubilant charge of 10 farad ,

capacitance voltage is

1. 10 v (*)2. 100 v3. 1000 v

66. Advantages of electrical / airdriven motor than hydraulic motor

1. Reliability2. Many power (*)3. More power4. Accurate power

67. For temp compensation which capacitor used

1. Ceramic (*)2. Electrolytic3. Paper4. Mica

68. BCD invalid

1. 1010 (*)2. 01003. 01014. 0111

69. 10 low resistor

1. Carbon2. Wire wound (*)3. Variable4. All above

70. Equalizing bar are required in (Parallel Operation)

1. Series (Property)2. Shunt3. Alternator4. Compound (*)

71. Effect of screen grid

1. RF amplifier (*)2. Capacitor between c3. Amplification factor4. All of the above are correct

72. Armature current

1. 4102. 4403. 204. 2 amp (*)

73. State of charge of Ni – cad

1. Ferominal voltage2. State of discharge3. 1 & 2 are correct (*)

74. Which memory is used on every read cycle

1. EPROM2. PROM3. ROM4. EAROM (*)

75. Capacitor with polarity

1. Electrolytic (*)2. Ceramic3. Paper4. Mica

76. EMF induced in motor

1. Flat hand rule2. Fleming right hand rule (*)3. Lenz's law4. Right hand corek crew

77. Capacity characked of lead acid

1. One month2. 3 month (*)3. Every shop visit

78. Essential services connected directly to

1. Aircraft generators2. Batteries3. Static inverter4. 1 & 2 are correct (*)

79. For more precise and high temperature greater stability with temperature change use



1. Carbon2. Metal film3. Wire wound4. Chip (*)

80. Thickness of lamination of transformer depends on

1. Eddy current loss2. Frequency (*)3. Cu loss4. Efficiency

81. Cu loss of transformer depends on

1. Voltage 2. Current (*)3. Voltage and current4. Watts

82. In transformer when secondary is loaded then

1. It neutralized the primary flux2. It does not affect primary flux3. Same flux flows through the primary as

at no load (*)4. 1 & 3 are correct

83. In converting two winding transformer to step up auto transformer

1. Flux flows through the secondary increases

2. Connect the transformer as additive polarity (*)

3. Connect the transformer as subtractive polarity

4. Flux linked with the primary winding is less

84. For matching low impedance to high impedance circuit which configuration is used.

1. CB2. CC (*)3. CE4. CB and CC

85. Mark the correct statement, for fully valency band, empty conduction band and high energy gap.

1. Conductor2. Semiconductor3. Insulator (*)4. Absolute insulator

86. In ATA 100 specification for cable position '3' indicate

1. Function of circuit2. Segment of cable3. Cable number 4 (*)4. Unit number 1

87. Smoke detector is used in aircraft

1. Engine department2. Landing gear section3. Lavatory section (*)4. Cockpit

88. Mark the correct statement, while running induction motor,

1. Rotor torque is depend on rotor resistance

2. Rotor torque directly proportional to applied voltage

3. Rotor torque is inversely proportional as standstill reactance

4. Rotor resistance is equal to rotor reactance (*)

89. In landing gear retraction extension system, horn sounds and red light comes on when

1. Any discrepancy is found in landing gear2. Any other gear not down and locked (*)3. 1 & 2 correct

90. Aircraft Schematic diagram is drawn on, when

1. When aircraft is in the ground and CB is closed

2. When aircraft is in the ground and switches off (*)

3. During flight position and supply is off.4. When aircraft is in the ground and

external supply is connected.

91. Mark the correct statement, Shunt is used,

1. In DC circuit only2. In DC and AC circuit3. In DC and specified AC circuit (*)4. In AC circuit only.

92. Clutch is used in actuators for

1. Mechanical overloading (*)2. Motor cut off



3. Protection of o limit switch operation over travel.

4. Prevent overheating of motor.

93. Mark incorrect statement, for CE transistors configuration,

1. High impedance2. High power gain3. Low voltage gain (*)4. High current gain

94. Intensity control of CRT adjusted by

1. Secondary anode voltage varied.2. Negative voltage of grid is varied (*)3. Voltage of focusing anode is varied4. Voltage of first anode is varied.

95. Soldering is avoided by quick joining of two contact is

1. Crimping (*)2. Hard solder3. Silver solder4. Brazing

96. Photo electric effect is

1. Photodiode2. Phototransistor3. Light rays falls on photocell (*)4. LED

97. Which gate is used for parallel switching operation

1. OR (*)2. AND3. NOR4. NAND

98. Operation code stored during fetching in

1. Instruction resistor2. ALU3. Program center4. Accumulator

99. In servo system the motor used

1. Single phase2. 2 phase (*)3. 3 phase4. Multiphase

100. Aircraft instrument motor used

1. DC shunt wound motor

2. Compound wound motor3. Single phase induction motor (*)4. 1 & 2 are correct

101. In carbon pile voltage regulator, voltage coil resistance is adjusted by,

1. Air gap between magnetic core and armature (*)

2. Resistance is minimum3. Ballast resistance adjustment4. 1 & 2 are correct

102. Aircraft generator busbar is made up of

1. Copper strip (*)2. Aluminium bar3. Copper rod4. 1 & 2 are correct

103. In transformer secondary is loaded secondary flux,

1. Neutralized the primary flux. (*)2. Does not affect the primary flux3. Same flux as at no load4. 1 & 3 correct

104. Operation principle of proximity switch is

1. Cabin door2. Passenger and freight door (*)3. Landing door4. None of the above are correct

105. Electrodynamometer instrument is used for

1. AC measurement2. DC measurement3. AC and DC measurement (*)4. All above are correct

106. A transistor is above to conduct when,

1. Collector is heavily doped2. Its base region is narrow (*)3. Its base region is wide

107. In microprocessor numerical alphabets

1. BITE code

108. Mark the correct statement, in blushless alternator,



1. Rotory rectifier supply DC to exciter winding of main generator

2. Rotory rectifier supply DC to GCU3. Rotory rectifier supply DC to exciter

generator.

109. Mark the correct statement, concept of lighting is such that,

1. Taxi light are at the tip of the wind2. Landing lights are bright (*)3. Beacon lights are at the tail tip

110. Electrical system and circuit control by,

1. Switch and relays (*)2. Microswitch and clutch3. Switch and brake4. Brake and clutch

111. Conduct provided for cable for,

1. Oil and fluid areas and mechanical support (*)

2. Magnetic protection3. High temperature areas4. To reduced the electrostatic induction

112. One wire broken detection system used,

1. Fenowal system (*)2. Kiddi system3. Lindburg

113. Generator output voltage ripple removed by,

1. Filters only2. As in 1 and suitably rated capacitors (*)3. Shielding

114. For short term low resistance wire material used

1. Copper2. Aluminium3. Stainless steel4. Silver

115. Mark the correct statement, wave winding is used because

1. Equalizing connection are not required (*)

2. Reduced the induced emf3. Same emf is produced4. Less material used

116. In CSD oil used for cooling has a pressure of

1. 120 – 160 psi (*)2. Below 300 psi3. Above 300 psi4. Below 500 psi

117. Flat compound generator has

1. Full load voltage equal to no load voltage (*)

2. Full load voltage is more than no load voltage

3. Full load voltage is less than no load voltage

118. Bonding is used aircraft to provide

1. Low resistance path (*)2. High resistance path

119. Relighting of combustion system during flight is done with

1. Starter and ignition is used2. Only starter is used3. Low rating is used (*)4. High rating is used

120. Current coil is RCCB is used for the purpose of

1. It aids the flux to voltage coil when the current flows in the forward direction (*)

2. It opens the circuit when the reverse current flows from the battery to the generator

3. It prevent the battery from overheating

121. Resistor is in series with mutual reactor

1. Time constant is directly proportional to mutual reactance

2. Flux saturated when mutual reactor is maximum

122. Mark the correct statement, differential current protection is used to detect

1. Short circuit feeder line (*)2. Circuited biushbar3. Ground the line4. 1 & 2 are correct



123. Mark the correct statement, in differential current protection

1. Two current transformer are used (*)2. Three current transformer are used3. As in 1 and connected between negative

and earth4. As in 2 and connected between two

phases.

124. Mark the correct statement, in batteries

1. Capacity increases as rate of discharge decreases (*)

2. Capacity increases as rate of discharge increases

3. Capacity decreases as rate of discharge decreases

125. Cell balancing is carried out when

1. Capacity is less then 80% (*)2. Battery voltage is less3. Battery cells is leaking

126. In capacitance type fire warning system

1. Capacitance increases as temperature increases.

2. Capacitance increases as temperature decreases.

3. Resistance increases as temperature increases.

4. Resistance increases as temperature decreases.

127. Sabilizing winding used in alternator as

1. Transformer type of coupling is provided.

2. Gives signal to voltage regulator circuit when there is voltage fluctuation in voltage regulator circuit.

3. As in 1 & 2 are correct (*)

128. In Transistorized voltage regulator, DC supply to rotor is continued.

1. When there is conduction of zenor diode2. When less voltage is apply to zenor

diode (*)3. When transistor TI start to conduct.

129. Mark the correct statement, Form factor is the ratio of

1. Maximum value to rms value

2. rms value to average value (*)3. Peak to peak value4. Maximum to average value

130. Hysterisis motor is not used in aircraft because

1. The magnetism induced in the rotor and lagging characteristis rotor material (*)

2. Low hysterisis losses of motor

131. While monitoring aircraft electrical system the following system is used.

1. EICAS2. ECAM3. As in 1 & EFIS4. 1 & 2 are correct (*)

132. Shunt limited motor,

1. 70% of flux produced by shunt winding and 30% by series winding

2. It has minor shunt and large series winding (*)

3. It has minor series and large shunt winding

133. Exceptional sensitivity relay,

1. Polarized armature relay (*)2. Slug relay3. Heavy duty armature relay

134. For measurement of capacitor and dielectric loss of capacitor

1. Schering bridge (*)2. Wheatstone bridge3. Hay's Bridge4. Maxwell wien bridge

135. Thermal runway in battery is prevented by

1. Integral fan is connected in battery compartment for cooling of the battery

2. Constant current charging method is used

3. Device in battery to warning of high temperature (*)

4. All above are correct

136. Dielectric testing of cable is carried out at,

1. 15 kv at 15 minutes2. 1500 volts for 5 minutes3. Immersed in water for 1500 volts at 15

minutes 115 CORRECT ANSWER IS MARKED * AT END


4. Immersed in water for 15000 volts at 5 minutes

137. Mark the correct statement, resistor connected in parallel

1. Voltage across individual resistance is more than source voltage.

2. Product of voltage and current across individual resistor is additive

3. Current are additive. (*)

138. Inductance of inductor is depend on

1. Current through the coil and number of turns of coil (*)

2. Distance between the turns

139. External pressure of aircraft is increase and decreasing internal pressure by the

1. Outflow valve2. Negative pressure relief valve (*)3. Pylon valve4. Bypass valve

140. APU connection

1. Connector is plug into the right side of the fuselage.

2. Connector is plug into the aircraft when the battery is removed.

141. The selection of diagram related to aircraft system and selection of status measured in from

1. Flight phase2. Manual mode

142. Mark the correct the statement

1. Ramp tester is produced by manufacturer of equipment

2. Ramp tester is produced by manufacturer of aircraft

3. Ramp tester is produced by tester carried out on ground

JUNE 2000

1. The fundamental frequency is

1. w (*)2. w/r

2. Alkaline batteries the level of electrolyte with respect to plates should be

1. Above (*)2. Same3. Below4. Complete filled

3. Lead acid cell when it is overcharged it causes.

1. Sulphation (*)2. Dechlorination3. Chlorination4. None of the above

4. Alkaline batteries as compared to acid batteries

1. Cheaper (low initial cost)2. Lower weight to cap. Ratio3. Higher rate of charging and insensitive4. Higher power to weight ratio (*)

5. The meter that is suitable for only DC measurement

1. Moving coil type2. Permanent magnet (DC) (*)3. Electrodynamic type (AC and DC)4. Hot wire type (AC and DC)

6. For measurement for very high voltages upto 500 kv instrument type used is

1. Electrostatic voltmeter2. Hot wire type (*)

7. Conductor and insulators used in cable of type MIL – W – 5086 A (Type 2) as

1. Tinned copper or aluminium positive nylon.

2. Tinned copper or aluminium glass positive nylon (*)

3. Alluminium

8. In Aircraft wiring it is necessary the wire should be have

1. High current withstanding capacity2. Least of voltage drops betwen 2 ends3. Should be flexible4. All are correct (*)



9. Metal conducts are generally used for covering cables

1. Sheilding against signal interference (*)2. In a/c fluid areas3. Both are correct

10. HRC fuse should for

1. High rupturing capacity fuse (*)2. Emits enclosed inert gase

11. Carbon resistors are preferred than wire wound resistor because they have

1. High strength2. High stray inductance (*)

12. Compensating winding used in generator

1. Lie in series with armature winding2. As in 1 and in series with the inter pole

winding3. Sides lie parallel to the sides of the

armature coil4. All above are correct (*)

13. Compensating winding used in generators

1. Reduce reactance sparking2. Brush wear and commutator wear

reduction3. Reduce ratio interference4. All of the above are correct (*)

14. A 4 pole, 12 slots lap wound DC armature has two coils sides / slot. Assuming single turn coil and progressing winding. The back pitch would be

1. 52. 7 (*)3. 34. 6

15. Between no load and full load motor develops the least torque.

1. Series (*)2. Shunt3. Commulative compound4. Differential compound

16. Corel of a magnetic amplifier

1. mmf increases gradually with flux density

2. mmf increases as flux density increases3. Same as in X'former

17. The ordinary efficiency of a given transformer is maximum when

1. If runs at half full load2. If runs at full load3. If it Cu loss equals to iron loss.

18. Two x'mer operating in parallel having equal outputs and voltage ratio carry different loads because

1. They have an equal percentage impedance (*)

19. Regarding skewing of rotor bars in a SCIM

1. It reduces magnetic ham during its operation.

2. It prevents coffing3. Both 1 & 2 are correct (*)

20. Rotor Rheostat control of starting torque can be applied in

1. Slip ring motors

21. Hysterisis motor rotor material used is

1. Chrome steel (*)

22. The power factor of a series RLC circuit at is half power points is

1. Unity2. Lagging3. Leading4. Either 2 & 3 (*)

23. Current flow in a semi conductor depends an the phenomenon of

1. Drift 2. Diffusion3. Recombination4. All of the above are correct (*)

24. A LED emits visible light when its

1. PN junction is reversed biased2. Depletion region windows3. Holes and electrons recombine (*)4. PN junction becomes hot



25. In a transistorized voltage regulator used in alternator the output voltage depends upon

1. Input voltage2. Resistor connected in series with

transistor (*)3. By adjusting the screw of an armature

contact.

26. The output voltage of a step down type switching voltage regulator depends on

1. Input voltage2. Duty cycle3. Transistor on time4. All of the above are correct (*)

27. Common base configuration is used because it has high

1. Current gain2. Voltage gain (*)3. Power gain4. Input impedance

28. A class B push pull amplifier has the main advantage of being free from

1. Any circuit imbalance2. Unneauted noise3. Even order harmonic distortion (*)4. DC magnetic saturation effects

29. The extremely high input impedance of a mosfet is primarily due to

1. Absence of its channel2. Negative gate source voltage3. Depletion of current carries.4. Extremely small leakage current of its

gate capacitor. (*)

30. In RC phase shift oscillator circuit

1. There is need for feedback2. Feedback factor is less than unity3. Pure sine wave output is possible (*)4. Transistor parameters determine

oscillation frequency.

31. A half adder can be constructed

1. Two XNOR gates only2. One XOR and one OR gate with their

output connected in parallel3. One XOR and one OR gate with their

input connected din parallel.

4. One XOR and one AND gate (*)

32. An RTL logic family uses

1. Resistor diode2. Resistor and transistor (*)3. Resistor diode and transistor

33. Which is the fastest logic line currently available

1. TTL2. High speed TTL3. ECL (*)

34. CMOS logic family uses only

1. MOSFETS and resistors2. NMOS circuits3. MOSFETS (*)4. Bipolar transistor

35. The signal to be observed on the screen of an oscilloscope is applied

1. Across its X plates2. Across its Y plates3. To the horizontal amplifier4. To the trigger circuits

36. The deflection sensitivity of a CRT depends inversely on the

1. Length of the vertical deflecting plates2. Distance between screen and deflecting

plates3. Deflecting voltage4. Separation between Y Plates (*)

37. The direction of the rotating armature current in DC motor is decided by

1. Flemings left hand rule (*)2. Faraday's law3. Constant law

38. Parallel LC resonant circuits provides

1. Equal AC flow through L & C2. High impedance at certain frequency3. Number AC power4. All above are correct

39. The bonding jumpers which statement is wrong

1. Resistance should not exceed 0.003 2. Should be short as possible



3. To coat it with sealing coating to prevent corrosion

4. Should be soldered for better connection (*)

40. The requirement of navigation light

1. A red light at the left side from point directly ahead through an are of 110 and green light at right side with a similar are of visibility

2. A green light at the left side and red light of the right side from a point directly ahead through an arc of 110.

3. As in 1 and white light visible from the rear of the a/c through an arc of 140.

4. As in 1 and white light visible from the rear of the a/c through an arc of 70.

41. Comp circuit with no power loss

1. Capacitor2. Inductor3. Capacitor and inductor4. All of the above (*)

42. Real power developed in circuit containing resistance and reactance

1. I and R2. VI Sin 3. V2 reactance4. VI Cos

43.depends upon

1. Eb (*)2. Flux

44.

1. High speed TTL (6 numbers)2. ECL (0.75 to 2 numbers)3. TTL (10 numbers)4. CMOS (Very less)

45.determined

1.Free gassing at the end of cycle2.Special gravity indication3.Voltage measurement (*)4.All above are correct

46.

1.MSI2.LSI3.SSI (*)

4.All above are correct

47. The passive display is

1.LED2.LCD (*)3.CRO4.Gas discharge

48. Transformer at full load. Iron losses = 800 w considering maximum efficiency Ca losses at half load

1.800 w (*)2.400 w3.1600 w4.200 w

49. In LCD display at dynamic scaltering type

1. Background of display is black2. Scatler light in all direction (*)3. All above are correct

50. I, CRT, intensity is adjusted by

1.Cathode2.1st Anode3.2nd Anode4.Negative grid control

51. False fire warning due to

1.Moisture2.Due to dent and neck (*)3.Short circuit of element4.1 & 2 are correct

52. Insulation used on wife for 400

1.PVC2.Nylon3.Silicon braided (*)

53. The heater of windshield are placed

1.Embedded (*)2.Attached to window3.Adjacent

54. 'Drop Out' means

1.When contact open (*)2.When contact closed3.When coil attracted armature4.When core attracted armature

55. Battery excess charges



1.100 %2.120 %3.140 %4.180 % (*)

56.

1.Togg'e Switch (()2.Micro3.Rush4.Rocker button

57.

1.1 spark2.2 spark3.4 spark

58.

1.Aircraft battery (*)2.External power supply3.APU battery

59.

1.2 p display CRT used2.Upside and downside3.Side by side left side message form right

side

60.

1.Transducer2.Skid control sensor3.Sensor4.Sousing circuit

61.

1.3 2.4.5 3.6 (*)4.9

62.statement

1.If operate on the principle of capacitor discharge in xenon tabe.

2.It is substitute to anticollision light.3.If operates at flash frequency 70 per / min.4.All above are correct

63.

1.Volatile2.Non – Volatile

3.Data is stored by manufactured in manufacturing process

4.Data can be rewrite

64. MSI has (Medium Scale Integration)

1.10 – 1002.Less than 303.100 – 10004.More than 10000

65. In electrical system position of valve and speed is indicates by

1.Potentiometer and techogenerator2.Potentiometer and servometer3.Resistance

66. Square mill used to

1.Square wire2.Circular wire3.Rectangular

67. Cable use of before and after fire

1.Nyvin2.EFFGLASS3.EEPSIL4.None of the above

68. Pitot state tube

1. Airspeed indicator2. Altimeter3. Vertical speed indicator4. OAT

69. A generator having 40 kva and 0.8 PF KW

1. 36 kw2. 32 kw3. 30 kw4. 140 kw

70. Junctions box is installed as open side should be

1.Downside2.Upside3.Horizontal4.Vertical

FEBRUARY 1999

1.Power factor 100% in circuit

1. In phase (*)



2. Current leading3. Current legging4. None of the above

2.In half wave rectifier form factor is

1. (*)2.

3.4.

3.Shunt motor back emf suddenly disappear

1. Motor will stop (*)2. Motor will burn3. Motor will run

4.Fuses material

1. Tin2. Alloy of tin and bismuth3. Lead4. All of the above are correct (*)

5.SCR is used for

1. Switch2. Rectifier3. Variable power output4. All above are correct

6.Maximum heat dissipation in rectifier

1. Anode2. Cathode3. Cu which form the cathode4. Surve as a heat sink and dissipater (*)

7.Low propagation delay

1. PTL2. ECL (*)3. DTL4. RTL

8.Passive display

1. LED2. LCD (*)3. CRT4. Gas discharged

9.Speed control of DC motor which method is used for good response

1. Flux control (*)2. Armature resistance control 3. Tapped field

4. Ward Leonard

10. Static discharge wicks

1. Located at training edge of ailrons, elevators and redder

2. Reduce corona discharge effect on interferance of radio signal (*)

11. In which material permeability is less than one

1. Die magnetic < 1 (*)2. Fero magnetic >> 13. Para magnetic > 14. Non magnetic = 1

12. In heartly oscillator, the phase shift between

1. 902. 1803. 2704. 360

13. The propagation delay time is maximum

1. TTL 3 numbers2. ECL 0.3 numbers3. CMOS 7 numbers (*)4. High speed TTL 1.5 numbers

14. Transformer lamination have

1. Low resistivity and high hysteresis2. High resistivity and high hysteresis3. High resistivity and low hysterisis (*)

15. In hysterisis motor rotor becomes a permanent magnet

1. Rotor speed lower than synch speed2. Rotor speed higher than synch speed3. Rotor speed rotate at synch speed (*)

16. The ratio of true power to the apparent power of an AC circuit is known as

1. Power factor (*)2. KW / KVA3. KVA / KW

17. Which one of the following relay have maximum sensitivity

1. Heavy duty relay2. Low duty relay3. Polarized relay (*)



4. Sludged relay

18. What is the use to neuloalised spillage of electrolyte from lead acid battery

1. Vinegar2. Boric acid3. Ammonia (*)4. Bicarbonate of soda

19. When should be a nickle cadmium battery gives deep cycle treatment

1. Every month2. Every 3 month3. Every 6 month4. 100 hours (*)

20. Capacity of battery increased by

1. Size of plate2. Number of plate3. Electrolyte4. Both 1 and 2

21. The function of the circuit indicate in ATA 100 code

1. 12. 2 (*)3. 34. 4

OCTOBER 2003

1. In Lissajous patterns when signal applied across x – y plates of same frequency, amplitude and phase difference produced

1. Straight line having 45 degree angle to horizontal (*)

2. Straight line with 135 degree angle to horizontal

3. Circle with

2. While handling NI-CAD battery, if the eyes contaminated with the KOH wash the eyes with

1. Carbolic acid2. Plenty of water (*)3. Weak boric acid

3. Internal resistance of battery depends upon

1. Plate area

2. Distance between the electrodes (*)3. Electrolyte solution4. All the above are correct

4. Carbon resistors preferred than wire wound resistor because

1. High stability2. Low stray inductance3. Least the cost4. Low power (*)

5. Protection of batteries provided for

1. Internal heating2. Excessive environmental temperature3. Overheating of battery leads

6. Resistance of 6 ohm and inductive reactance of 8 ohm connected in series to supply of 200 v. calculate voltage drop across 6 ohm resistance.

1. 120 v (*)2. 150 v3. 200 v4. 100 v

7. 3 Phase induction motor having rpm 1440 and rotor speed of 50 Hz. Calculate the slip

1. 502. 60 (*)3. 1004. 40

8. In Rotary inverter motor and generator

1. Having common arm. and field winding2. Having same arm. and different field

winding3. Mounted on same shaft. (*)

9. Proximity Switch use for the purpose of

1. Landing gear operation2. Thrust reverser3. Cabin door4. All the above are correct (*)

10. All flight data reads on

1. EACAS2. EACAM3. FDAU



4. EFIS (*)

11. In modern aircraft, all bytes measured on

1. BITE Box (*)2. BLACK Box3. TOOL Box4. None

12. In 3 pin external DC power supply connector

1. One of the positive pin is shorter (*)

13. In large aircraft, external power supply connector

1. 4th pin of large dia.2. 2 pins of short diameter3. As in 2 and supplying interlocking relays4. As in 3 and connect the external AC

power to the aircraft (*)

14. Number of splice use between two connector

1. 1 (*)2. 23. 34. 4

15. When syn motor runs on lagging p.f., if the load is reduced p.f. becomes

1. More lagging2. Less lagging3. Unity p.f.4. Near to the unity p.f.

16. Highest power gain in

1. CE (*)2. CB3. CC4. None

17. Highest current gain in

1. CE2. CC (*)3. CB4. All

18. CMOS uses because,

1. Requires less power (*)2. Low memory device3. High speed


19. In parallel operation of DC generator improper division of load because of

1. Voltage regulator adjustment is not properly balanced

2. Ground the field3. Field open

20. When, Alternator fails

1. Ammeter shows reverse current, busbar voltage equal to battery voltage

2. Alternator get disconnected by automatically

21. Cross – short is check by

1. Voltmeter2. Ammeter3. Ohmmeter (*)4. 1 & 2 is correct

22. When, input to megger is off, pointer goes to

1. Extreme LII (*)2. Extreme RII3. Centre position4. Any where position

23. Cutout of AVO operated by

1. Electrically 2. Mechanically3. Electromagnetically (*)4. Pneumatically

24. Negative relief valve operated by

1. Pneumatically2. Electrically3. Hydraulically4. Magnetically

25. The purpose of the 'Dump valve' in a pressurized aircraft is to relieve

1. All the positive pressure from the cabin2. A negative pressure differential3. Pressure in excess of the maximum

differential

26. External power 'TRU' supply connected to

1. DC relays and DC consumers2. Feedback supply to hold in circuit of the

ground power unit 115 CORRECT ANSWER IS MARKED * AT END



1. Essential services directly connected to battery bus bar

2. Generator bus bar are normally isolated

28. Clorona effect is reduced by

1. Static discharger (*)2. Coaxial cable

29. Brush wearing at high attitude due to

1. Friction between commutator and brush2. Static electrical charge due to friction3. Contact resistance is negligible4. All of the above are correct (*)

30. In modern turbojet aircraft

1. Two batteries of are connected in series and in parallel during starting of engine

2. Only one battery switch is on and then connected in parallel

3. 48 volts is supply at the starting of the engine by connecting the batteries in series and then 24 volts is applied by connecting batteries in parallel (*)

31. When operating temperature is low, lead – acid battery capacity,

1. Capacity decrease (*)2. Reduce electrolyte3. Discharge

32. Advantage of constant voltage charging on aircraft

1. Protection against excessive gassing2. Reduced time (*)3. Reduced capacity

33. Mark the correct statement, antiskid autobrake system

1. Automatic 2. Touchdown3. Deaccleration rate is less than manual4. All above are correct (*)

34. Window heat sensor

1. Embedded in glass (*)2. Touching with glass


1. Class 'D' connector is of fire proof type2. Class 'A' is

36. In part number of connector AN18A-10 'A' indicates,

1. Class of connector2. Type of connector3. General utility usage (*)

37. In electrical system which diagram shows one or more than one

1. Wiring diagram2. Schematic diagram (*)3. Routine chart

38. Smoke detector used in cargo

1. Photo electric cell (*)2. Sniffer

39. 'Slug' relay operated on the principle of

1. Lenz's law (*)2. Fleming's left hand rule3. Faraday's law

40. Network containing no source of emf is

1. Active2. Passive (*)3. Bilateral4. Unilateral

41. Capacitance can be measure with the help of,

1. Schering bridge (*)2. Hay's bridge3. Maxwell's bridge

42. Transformer of having 2000 turns on primary supply with 250 volts, induced voltage in secondary of 200 volts. Calculate the secondary turns

1. 1600 (*)2. 19003. 20004. 1500

43. Intensity control of CRO is done by

1. Negative potential of grid (*)2. Cathode of CRO



3. Secondary anode at negative potential

44. Voltage amplification of amplifier

1. Large load2. Small

45. Maximum voltage drop across the cable connected between generator and battery to any component should not exceed.

1. 2 % of regulated voltage of the generator or battery when the battery discharge at 5 minute rate

2. 2 % of regulated voltage of the generator or battery when the battery discharge at 1 hour rate. (*)

3. 10 % of regulated voltage of generator

46. Lap winding is used for

1. High voltage machine2. Low voltage machine (*)3. Loc current machine4. High current and low voltage

47. If the capacitor charge and then halved it which factor will affects,

1. Chmige2. Potential difference (*)3. Dielectric material4. Capacitance


1. Compensating winding is connected in series with interpole

2. Compensating winding is connected in with armature and parallel with interpole

3. Compensating winding is connected in series with armature winding and interpole (*)

49. Calculate the energy store in inductor, having inductance of 10 mH and current of lamp

1. 160 mj2. 80 mj (*)3. 160 joules4. 1600 joules

50. Insulation resistance used above 400 degree centigrade.

1. Braided wire2. PVC3. Fibre glass (*)

4. Silicon rubber

51. Asymmetrical waveform rms value calculated over

1. Full cycle2. Half cycle (*)3. Two cycle4. Three cycle

52. Time current characteristics of protection devices

1. Above the wire capacity2. Below the wire capacity (*)3. As close as possible to the wire capacity

53. To test generator or motor windings for opens

1. Place armature in growler and connect a 110 v test on adjacent segment light should light. (*)

2. Check adjacent segment on commutator with an ohmmeter on high resistnce scale

3. Used a 12/24 v test light between the armature core segments and shafts

54. In fire detection system, false fire warning due to,

1. Improper routing or clamping the system2. Moisture3. Dents or kinks or crushed sensor

sections (*)4. 2 & 3 are correct

55. In inductor 'A' of air core and 'B' iron core then inductance in 'B' is

1. More (*)2. Same3. Less4. Not affected

56. Capacity of choke input filter is for

1. Current smothering action2. Voltage smothering action3. As in 1 & 2 are correct

57. Ohm is used for measurement of

1. Resistance2. Inductive reactance3. Capacitive reactance4. All above are correct (*)



58. Instrument used for measuring bonding in a/c

1. Bonding tester 2. Ohm meter with wire and battery3. Ammeter and battery4. 1 & 2 are correct (*)

59. Why the rotor bars of induction motor is placed deeper into the rotor

1. To reduce iron loss2. To improve p.f.3. To improve

60. Material of pole shoes are of

1. Laminated sheet2. Laminated sheet (*)3. Cast iron4. Thin soft iron lamination

61. If load kept constant and p.f. increased then will

1. Increase2. Decrease3. Remains constant

62. In generator field winding consists

1. Thick wire carrying for low current2. Thin winding and high current3. Thin winding and low current (*)

63. Fleming left hand rule middle finger indicates

1. Direction of current2. Direction of rotor3. Direction of flux (*)

64. For measuring insulation resistance megger consist of

1. Moving coil galvanometer2. Voltmeter and ammeter coil (*)3. Ohm meter and ammeter4. Ohm meter

65. Fuses and C.B. are used

1. Hear loads2. Hear bush bar3. Between bush bar and load

66. Relay contact get heated, due to

1. Low contact pressure (*)

2. Low voltage3. Low current

67. Which instrument is used to measure high frequency low current measurement

1. Electromagnetic ammeter2. Moving coil galvanometer (*)3. Thermostat type instrument4. Induction type instrument

68. Moving coil instrument is used to measure

1. Low frequency AC signal2. High frequency AC signal3. Both AC and DC signal (*)

R001. Rockwell tester measures

1. Resistance to penetration and depth. *

2. Diameter of impression.

3. Size of indentation.

4. All of the above are correct.

R002. P-N Junctions used as

1. Rectifier or Non return valve. *2. Oscillator.3. Amplifier.4. None of the above.

R003. In PNP transistor

1. Flow of electrons from emitter to base.

2. Holes moves from collector to emitter.

3. Flow of electrons from base to emitter.

4. Flow of electrons from emitter to base. *

R004. Cleaning of titanium spares by

1. Steel or steel wool.2. Iron scrapers.3. Mild abrasive or hands polish with

aluminum. *4. None of the above.

R005. Aluminum alloy are welded with

1. Oxidizing flame. 2. Neutral flame. *



3. Reducing flame.4. None of the above.

R006. In triode grid

1. Reducing space charge.2. Prevents secondary emission.3. It increases emission of electrons

from cathode to plate. *4. Control electron flow from plate to

cathode.

R007. To check interior surface condition of cylinder & surface

1. To be used Borescope.2. To be used Fiberscope.3. To be used Endoscope.4. All of the above are correct. *

R008. Radiography depends on

1. Size and shape of the job.2. Thickness of Materials.3. X-ray.4. All of the above are correct. *

R009. The diametric pitch indicates

1. Number of teeth per inches on pitch diameter.

2. Size of the gear teeth. 3. As in (1) & (2) are correct. *4. None of the above is correct.

R010. Hand reamer is used to

1. Remove small amount of materials and expand a hole.

2. As in (1) and is turned with tap wrench. *

3. Make an undersize or oversize hole to correct size.

4, All of the above are correct.

R011. At absolute zero temperature, an intrinsic semiconductor will act as

1, Insulator. *2. Super conductor.3. Neutral.4. None of the above.

R012. In semiconductor depletion zone

1. Has positive holes pairs.2. Has negative electrons pairs.

3. Has neutral electron-hole pairs. *4. None of the above is correct.

R013. Internal barrier potentials in semiconductor

1. Increases with higher temperature.2. Decreases with higher temperature.*3. No change with temperature rise.

R014. Mark the correct statement

1. Silicon semiconductor has zero reverse current with reverse voltage.

2. Germanium semiconductor has zero reverse current with reverse voltage

3. Varactor diode is used for electronic tuning.

4. As in (1) and (3) are correct. *R015. Mark the correct statement

1. Tunnel diodes are also called ‘Esaki diodes’.

2. Tunnel diodes have heavy doping.3. In tunnel diodes, current decreases

with increase voltage and used as an amplifier or oscillator.

4. All of the above are correct. *

R016. In Light Emitting Diodes (LED)

1. Gallium (Ga) is used for best efficiency.

2. Have several colors depending on the materials are used in the chip.

3. Have high current consumption than LCD.


R017. Liquid crystal displays (LCD) are

1. Dynamic scattering.2. Field effect type.3. Dynamic scattering type produces

frosty white letters on dark background and field effect type produces black letters on silvery background.


R018. Capacitor color coding uses

1. In mica capacitor six-dot systems.2. In Tubular ceramic capacitor color

dots or bands.



3. Gray and white are used as decimal multipliers for very small values.


R019. When temperature is lowered from room temperature to 50 0 K, resistance of Ge & Si semiconductor will

1. Both increase. *2. Both decrease.3. Ge decreases, Si increases.4. Si decreases, Ge increases.

R020. To check external threads

1. Thread gauge is used.2. Ring gauge is used. *3. Plug gauge is used.4. None of the above is correct.

R021. A modern computers executes

1. One instruction at a time.2. Millions of instructions at a time.3. Millions of instructions in a second

not at a time. *4. None of the above is correct.

R022. In metal spraying process

1. Metal is sprayed on copper / Nickel.2. Metal is sprayed on solid surface.3. Al / Cu / Ni are sprayed on the metal

to improve corrosion resistance. *4. None of the above is correct.

R023. To improve corrosion resistance, pure aluminum is coated on both side of alloy is known as

1. Al-clad.2. Pure clad3. Both (1) and (2) are correct. *4. None of the above is correct.

R024. The file used to make keyways and slots is

1. Half round file.2. Triangular file.3. Square file. * 4. Knife file.

R025. If drill size is not mentioned on the drill, then it is measured by

1. A drill gauge with fractions towards the left & decimal towards the right

2. A drill gauge with fractions towards the right & decimal towards the left. *

3. A hole gauge or SWG.4. None of the above is correct.

R026. In Rockwell hardness tester

1. A diamond cone & spherical ball is used on material softer than C-20.

2. For softer materials.3. If the hardness scale overlaps top of

‘B’ scale & bottom of ‘C’ scale, ‘C’ scale set up is used. *

4. None of the above is correct.

R027. CPU of computers consist of

1. Input and output.2. Memory.3. ALU and Control unit.4. Both (2) and (3) are correct. *

R028. In work shop, parallel bars are used to

1. Lift the Jobs.2. To mark the job parallel line.3. To level the work piece.4. Both (1) and (3) are correct. *

R029. In a rheostat

1. Both end terminals are used to vary the resistance.

2. The middle and end terminals are used to vary the resistance with jockey in contact. *

3. All three terminals used to vary the resistance.

4. Only one terminal is used to vary the resistance.

R030. Tapered roller bearing

1. Take axial & radial loads simultaneously in one direction. *

2. Take heavy axial & moderate radial loads in either direction.

3. Take axial load only.



4. None of the above is correct.

R031. In an air lock fastener the material it can withstand is

1. Inscribe on the head of the stud in 1000 of an inch. *

2. Stamped on the stud receptacle.3. No marking available.4. None of the above is correct.

R032. A formed rivet is removed by

1. Center punch with drilling a hole slightly smaller than shank diameter.

2. Center punch with drilling a hole slightly greater than shank diameter.

3. Using flat chisel, chop off the head4. As in (1) and (2) are correct. *

R033. The most commonly used insulating material for an aircraft is

1. Nylon & cotton base.2. Rubber & silk base.3. Teflon. *4. As in (1) and (2) are correct.

R034. In aircraft bonding & screening is done to

1. Prevent static charge accumulation.2. Prevent radio frequency

interference.3. Eliminate ground wiring.4. All of the above are correct. *

R035. Ice box rivets, if not riveted in the prescribe time, can be

1. Rejected.2. Re-heat treated once.3. Re-heat treated for maximum of 3

times.4. Re-heat treated any number of

times. *

R036. When a weld structure is cooled

1. The strength can be improved by hammering. *

2. Hammering will destroying the joint.

3. As in (1) when prescribe in drawing.4 None of the above is correct.

R037. In lead acid cell

1. The positive plates are made of lead di-oxide(PbO2) and negative plate is pure spongy lead. *

2. The positive plates are made of lead per-oxide (PbO) and negative plate is pure spongy lead.

3. The electrolyte H2SO4 does not take chemical reaction while charging & discharging.

4. As in (2) and (3) are correct.

R038. An alternating voltage supplied to the face of the crystal is converted to sound wave

1. Known as Piezo-electric effect.2. Electromagnetic effect.3. As in (1) and frequency depends on

the thickness of the crystal. *4. As in (1) and frequency depends on

the applied voltage.

R039. Mark the correct statement for radiography of X-ray

1. They don’t travel in straight line.2. They don’t destroy living cells.3. They heat the metal on which they

fall.4. They can’t be reflected & refracted. *

R040. Bevel gear are used for

1. Transmitting motion between shafts inclined at the angle each other. *

2. Taking heavy load with low speed.3. Speed reducer.4. All of the above are correct.

R041. In an ideal transformer

1. Energy loss is caused by core.2. Copper loss is caused by conduction3. Eddy current loss by magnetization.4. None of the above is correct. *



R042. The strength of 18-8 steel can be increased by

1. Heat treatment only.2. Hot working only.3. Cold working only. *4. None of the above is correct.

R43. The filler material in composite material improves

1. The pot life, strength and make resin application easier. *

2. Shelf life and strength.3. Curing is faster.4. All of the above are correct.

R044. After swaging procedure, it is found that the thickness of the sleeve is reduced

1. It shows correct swaging is done.2. It is over swaged and job must be

discarded. *3. Open out and re-swaging to be done 4. None of the above is correct.

R045. Hawks bill snips are used to

1. Cut internal curves and radii. *2. Cut external curves and radii.3. As in (1) and (2) are correct.4. None of the above is correct.

R046. OR gate gives an out put when

1. Any one of the input is energized.*2. None of the input is energized.3. All of the inputs are energized.

R047. Shank of the Hand reamer is

1. Square in shape. *2. Hexagonal in shape.3. Straight and taper.4. None of the above is correct.

R048. XOR gate denoted in Boolean equation is

______1. A + B 2. A. B

3. A B . *4. None of the above is correct.

R049. Which of the following Boolean algebra equation is not the correct?

1. A + B = B + A2. A. 0 = 0.3. A + 0 = A.4. A. 1 = 0. *

R50. AN steel fitting color is

1. Black. *2. Blue.3. Green.4. None of the above is correct.

R051. H2So4 is neutralized by

1. Sodium bicarbonates.2. Ammonia.3. Potassium hydroxides.4. As in (1) and (2) are correct. *

R052. Close tolerance bolt is identified

1. By triangle with centre cross. *2. By Circle with centre cross.3. By cross.4. None of the above is correct.

R053. I beam is manufactured by

1. Extrusion.2. Drawing.3. Cold working.4. None of the above is correct. *

R054. 7075 major alloy element is

1. Copper2. Magnesium.3. Zinc. *4. None of the above is correct.

R055. If weld is made quickly (wet flux)

1. Cracking will occur.2. Porosity will occur. *3. Pitting will occur.4. All of the above is correct.



R056. Rocker arm and pin diameter is measured by

1. Telescopic gauge.2. Micrometer. *3. Hole gauge.

R057. Current flowing through two parallel conductors

1. Current in same direction repels each other.

2. Current in same direction attract each other. *

3. Current in opposite direction will attract each other.

4. Current in opposite direction will repel each other.

R058. A chisel is used to

1. Cut hardened steel.2. Cut any materials softer than it. *3. As in (1) and (2) are correct.

R059. While replacing a tyre where one wheel has to be raised

1. A single jack is used.2. Other wheel must be chocked fore

and aft.3. The wheel should be only high

enough to clear the ground.4. All of the above are correct. *

R060. The Diode and Triode

1. Act as an amplifier & rectifier respectively.

2. Converts AC to DC and increase magnitude of alternating current respectively. *

3. Both (1) and (2) are correct.4. None of the above is correct.

R061. Mark the correct statement for pure semiconductor

1. They are poor conductor of

electricity.2. Ohms law does not hold true for

them.

3. They do not have large number of free electron.


R062. Conductivity is increased of pure semiconductor by

1. Doping is done.2. No impurities are added.3. Impurities deliberately added.4. Both (1) and (3) are correct. *

R063. The electric lines of force

1. Can never intersect each other. *2. Always try to expand along their

length.3. Attract each other laterally.4. Can exit inside a conductor.

R064. In case of current induced by magnet, the strength of induced current increases

1. With decrease in area & number of

turn of the coil.2. With increase in relative motion of

the coil.3. With decrease in area and increase

in number turn of the coil.4. As in (2) and (3) are correct. *

R065. Clevis bolt is used for

1. Shear loads only and require a shear nut. *

2. Tensile loads and require a self locking nut.

3. Any type of load and require any type of nut.

R066. The heat treatment method of tempering depend on

1. Type of steel.2. Size and shape of the metals.3. The purpose to be used.4. All of the above are correct. *



R067. Under the action of electric forces in an electric field, mark the correct statement.

1. Positive charge flow from lower to higher potential.

2. Negative charge flow from higher to lower potential. *

3. Charge flow lower to higher potential4. Positive charge can flow from any

potential to provide electric field equal.

R068. Mark the correct statement.

1. Turnbuckle ends are normally made from cadmium plated steel.

2. Turnbuckles barrels are normally made of steel.

3. Turnbuckle ends may be of cable eye, pin eye and fork eye. *

4. As in (1) and (3) are correct.

R069. If sealer from heat treated steel parts on dirt accumulation on it, this may be cleaned by

1. Sand blasting.2. Wet blasting using liquid abrasive.3. Wire brash and scraper.4. All of the above are correct. *

R070. On a machine drawing, the characteristic of a surface is specified by

1. Proper dimension. *2. Limits and tolerance.3. Fringe pattern.4. None of the above is correct.

R071. Common drilling machine perform

1. Hole drilling.2. Reaming and spot facing.3. Counter sinking.4. All of the above and also tapping &

lapping. *

R072. Cutting speed of drilling means

1. Speed of circumference.

2. The distance that drill would roll if placed on its side.

3. RPM of the drill bit.4. Both (1) and (2) are correct. *

R073. The thickness of gear teeth is measured

1. At a point where the pitch circle of the gear cross the tooth. *

2. By vernier caliper.3. By Micrometer.4. Both (2) and (3) are correct.

R074. The mutual inductance between two coils is

1. Flow linked with one when current in the other is unity.

2. EMF induced is one when the current in the other is unity.

3. EMF induced in the coil when the current through the coil itself changes.

4. As in (1) and (2) are correct. *


question (final) ii

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