Set-14 dtd 12/10/20151. In relation to workshop practices, the tool telescopic gage is used to

a) take internal measurements

b) as in a) & can take measurements accurately within the range of to 6c) as in a) & can take measurements accurately within the range of to 1

d) both a) & b)

2. Small hole gages are used to measure the dimension ofa) small holes

b) grooves and slots

c) outside dimensions

d) both a) & b)

3. Needle file is

a) used by toolmakers, die makers & watch makers

b) it is knurled on one end so that separate handle is not needed

c) as in a) and is knurled on both ends to prevent slippaged) both a) & b)

4. Needle bearings are roller bearings which are used

a) in small and restricted areas

b) where motion is oscillatory rather than rotary

c) for both axial and radial loads

d) both a) & b)

5. The greatest size drill amongst the following is

a) No.1

b) No.30

c) 3/16

d) E

6. MTCSa) straight fluted reamer has a less tendency to chatterb) Bottoming reamer is tapered for a short distance back of the end to aid in starting

c) spirals fluted reamer is tapered for a short distance back of the end to aid in starting

d) spirals fluted reamer has a greater tendency to chatter

7. D.P. (Diametrical Pitch) of a gear givesa) No. of teeth

b) height of gear teeth

c) size if gear teeth

d) both a) & b)

8. The terms which are not associated with other types of gears but ae only used in case of worm gears

a) throat and throat radius

b) throat diameter

c) pitch diameter

d) both a) & b)9. 1/2-13NC-3B indicatesa) pitch diameter is 1/2

b) 13 NC indicates 13 TPI of national form

c) 3B indicates class 3 fit of external threads

d) ATA

10. In a gear systems, the driver and driven gears are on different shafts to get the same direction of rotationa) bevel gears are used

b) one of the gears should have internal teeth

c) as in a) and no mechanical advantage is obtained

d) NOTA

11. The given figure indicatesa) both take radial load onlyb) A takes radial load and B takes both radial & thrust loads

c) both take thrust load only

12. Least count of micrometer is 0.01mm, reading on the sleeve is 0.5mm and 27th division is with datum and it has an error of +0.005cm. Find the readinga) 0.077cm

b) 0.072cm

c) 0.72cm

13. Pitch of micrometer is 1mm and thimble scale is divided in to 100 divisions. If the reading on the main scale is 2mm and 45th division of the thimble scale is inline with the datum. Find the least count of the micrometer and the diameter of the wire from the above readings

a) 0.001cm and 0.245cm

b) 0.01cm and 2.45cm

c) 0.1mm and 0.245mm

14. Find the micrometer reading from the given diagrama) 0.04699

b) 0.4699

c) 0.4692

15. External threads are checked bya) roller and anvil type caliper gage

b) ring thread, gage is used

c) as in a) and ovality can also be checked

d) ATA

16. Composite has the advantage of high strength and low weight, considering this property the composites are

a) mud and straw

b) dope and fabric

c) fiber reinforced plastic(FRC) and aramidd) ATA

17. Hybrid means

a) two types of fibers combined to increase strength and reduce cost

b) interplay and intraply are the same

c) as in a) & carbon/graphite blended with Kevkar are used to substitute Boron fibers

d) ATA

18. Corrosion from Magnesium surface is cleaned by

a) steel wire brush

b) carbourandom abrasive

c) stiff hog bristle brush

d) steel burnishing tool

19. MTCS

a) ceramic fibers are characterized by dazzling white colorb) ceramic fibers are used where high strength is required

c) Kevlar has tensile strength fou times of that of aluminium

d) ATA

20. Circular magnetization method used in MPI cannot detect which type of defect:

a) lateral cracks

b) longitudinal cracks

c) deep sub-surface flaws

d) torsional cracks on a shaft21. Ultrasonic flaw detection technique is used to detecta) flaws and inclusions in cast metal

b) flaws or cracks in welded structure

c) delamination in bonded structure

d) ATA

22. In fluorescent penetrant inspection method the color of defect and sound part isa) brilliant yellow0green and blue-violet

b) yellow-red & green-blue

c) black & white

d) both a) & b)

23. The primary cause of inter granular corrosion isa) dissimilar metal contact

b) improper heat treatment

c) due to non-metal and metal contact

d) due to corrosive gases

24. In fluorescent penetrant inspection method the volume of defect is interpreted by a) staining speed

b) extend of staining

c) rate of staining

d) color

25. In relation to radiographic method of inspection, MTCSa) thicker the specimen, darker will be the image

b) thicker the specimen, lighter will be the image

c) the darkness of the radiograph does not depend upon the dariation penetrating the specimen

d)NOTA

26. For lightening protection on the composite materiala) magnesium plate is fixed on the top layer to provide a conducting layer

b) aluminium is woven to provide a conducting path

c) metal plate is used

d) no lightening protection is needed for composite material

27. Weft threads are

a) at 45 degrees to warp threads

b) perpendicular to warp threads

c) along with the warp threads to form the edge

d) NOTA

28. MTCS

a) carbon/graphite is usually blended with fiber glassb) Kevlar is characterized by its white color

c) ceramic fibers are used for low heat applications

d) ATA

29. In metallurgy the term creep is caused due to which factora) high temperature for a long period

b) high compressive stress

c) high stress for a long period

d) as in a) & c) and permanent creep leads to rupture

30. Soaking period depends up on a) soaking does not affect the internal structure of the metal

b) thickness of the metal

c) strength is not affectedd) ATA

31. Centre punch made of tool steel is tempereda) to cherry red color

b) as in a) and quenched in sand

c) as in b) and heated to dazzling white color

d) as in b) and heated to purple color

32. Shot peening is a) used on ferrous alloys only

b) increases strength

c) also known as sand blasting

d) ATA

33. Flux used in welding of aluminium alloy seves the following purpose

a) improves the penetration

b) get rid of oxidesc) slows the flow of molten metal

d) better fusion

34. Soldering technique of aluminium alloy is

a) similar to that of other materials

b) different to control the expansion & contraction of metalc) low heat input is required

d) both b) & c) are correct

35. Muntz metal isa) brass and is used for making nuts and bolts for use in saline areas

b) copper alloy containing zinc and minute quantities of tin, nickel,manganese and is used for making nuts and bolts for use I saline areas

c) both a) & b) are correct

d) bronze and is used in fuel and oil line fitting

36. Titanium is identified bya) spark test

b) moistening it and using it to draw a line on glass

c) both a) & b)

d) chemical test

37. Friction lock rivet is used to replacea) solid shank rivet

b) solid shank rivet but one size larger

c) as in b) and is available in hollow, self locking and self plugging types

d) as in b) and is available in hollow self locking and self locking with tapped threads

38. Cherry lock rivet is used to replacea) solid shank rivet

b) as in a) & if the length is less it fails to compress the sheets

c) as in b) and two size larger

d) as in b) and three size larger

39. Identify the figurea) low strength material bolt

b) an standard steel bolt

c) reworked bolt

d) an corrosion resistant steel bolt

40. Identify the figure

a) special bolt

b) magnetically inspected bolt

c) dye penetrant inspected bolt

d) an standard steel bolt

41. Identify the figure

a) anchor nut with one leg

b) anchor nut with two legc) anchor nut with corner leg

d) floating anchor nut 42. Marking on hydraulic seals is given asa) yellow mark for fuel

b) red mark for engine oil

c) green mark for skydrol fluid

d) white line for air

43. How can the swaged fitting be removeda) by drilling with a one size smaller drill

b) by using a scriber

c) unscrew the threaded insert

d) ATA

44. To avoid stress dut to vibration in tube linesa) atleast one bend is given in the line

b) two bends are given

c) no bend is required

d) preferably no bend is done, if it is done it will be less than 45

45.Rigid tubing used in A/c are classified according to

a) outside diameterb) wall thickness and outside diameter

c) inside diameter and wall thickness

d) inside diameter

46. 7 X 19 cable indicatesa) 7 strands of 19 wires each

b) 19 strands of 7 wires each

c) 7 strands of 133 wires each

d) 7 strands of 19mm wires each

47. An A.C. generator having 8 poles and 6000 rpm has frequency of

a) 200 cps

b) 400 cps

c) 800 cps

d) 1200 cps

48. The capacitance of a capacitor depends directly up on

a) plate area & inversely upon the distance between the platesb) plate area & distance between platesc) separation & thickness of the plates

d) plate area & inversely up on dielectric material

49. If electrolyte from a Lead acid battery is spilled, it is neutralized bya) sodium bicarbonate & water

b) ammonia

c) Vinegar

d) both a) & b)

50. If a wire is connected to a constant voltage supply and at the same time the length and radius is doubled the result would be

a) electrostatic field across the wire would become double

b) electrostatic field would become half

c) heat produced by the wire will remain same

d) ATA

51. If in a circuit the resistance is R and reactance is r than impedance Z is expressed as a) Z = R+r

b) Z = R+ r

c) 1/Z=1/R+1/r

d) Z2 = R2 + r2

52. Ohms law does not hold true for

a) gas diode

b) mercury column

c) transistor

d) both a) & c)

53. Calculate the power when voltage=28v & resistance =10

a) 284Wb) 784W

c) 78.4W

d) 7.84W

54. When a new NiCad battery is installed, its cell seal is opened and electrolyte is poured and to ensure full chargea) no charging is required

b) charging required and is given in boost-up

c) as in b) & suddenly installed in A/C service

d) as in b) and after 10 hrs. the electrolyte level is checked, than installed

55.The given figure indicates

a) X-NOR gate

b) X-OR gate

c) C-MOS NOR gate

d) NOR gate

56. Convert (11.75) in to binary form

a) 1101.01

b) 1011.11

c) 1100.11

d) 1010.11

57. A computer can solve only the following type of problem

a) simplex

b) complex

c) which can be broken in to a number of logical steps

d) arithmetic calculations

58. The processing speed of a computer is expressed as

a) MHzb) KHz

c) RAM capacity

d) frequency

59. A modern digital computer stores the data and instructions in

a) alpha numeric form

b) decimal form

c) hexa decimal form

d) binary form

60. Lift and drag of an aerofoil depends on

a) shape of wing, wing area and angle of attack

b) forward velocity of aircraft

c) density of air

d) ATA

61. In steady and level flight, if the angle of attack increasesa) lift increases

b) drag increases

c) lift increases & drag decreses

d) lift and drag both decreases

62. High lift devices such as flaps and slats are useda) to increase the speed of aircraft

b) to decrease the the take-off and landing run

c) as in b) & used in high speed operation

d) as in b) & also to reduce the fuel consumption

63. The device which is mounted on the opposite surface of the wing and is operated along with aileron for lateral control

a) balance panel

b) balance tab

c) spoiler

d) spring tab

64. Angle of attack is defined as

a) angle between the chord line & the longitudinal axis of A/C

b) acute horizontal angle between the plane of symmetry of A/C & direction of relative wind

c) angle between the chord line & the direction of relative wind

d) both a) & c)

65. In straight and level flight, the dynamic pressure acting on the tip of the nose of A/C is

a) maximum

b) minimum

c) zero

d) NOTA

66. In relation to jacking of light aircraft, mark the correct statementa) both main wheels are raised together

b) nose or tail wheel is unlocked to permit free rotation

c) wheels are raised at least 6 from the ground

d) ATA

67. In relation to towing of an A/C which of the following is correct

a) tail wheel A/C are generally towed from backwardb) nose wheel A/C are generally towed from backward

c) tail wheel of A/C must be in locked position

d) A/C with steerable nose-wheel the locking scissors are set 6 to fall swivel position before towing

68.Some manufacturers of large A/C provide a jacking point in the landing gear strut for the accommodation of a small hydraulic jack for the purpose of a) jack up the complete aircraft

b) service the oleo-strut in-situ when the A/C is on jacks

c) jack up one wheel of A/C to change tyre, bearings or service brake unitd) both b) & c)

69. Class-B fire includesa) fire in wood, paper, cloth etc.,

b) fire of energized electrical equipment

c) fire in any petroleum product

d) fire in a metal like magnesium

70. A/C instrument panels are usually shock mounted to absorb the following vibrationsa) low frequency, low amplitude

b) high frequency, low amplitude

c) low frequency, high amplitude

d) high frequency, high amplitude

71. In pitot static system, the static pressure is sensed at two points by placing flat plates on either side of fuselage

a) eliminates position error

b) freedom from ice formationc) eliminates static and instrument error

d) both a) & b)

72. Precision instruments are recalibrated at regular intervals in room having

a) normal environment but having a temperature control

b) air-conditioned and dust proof room

c) filtration system for particles of size 5 to 10 but not air-conditioned

d) filtration system for particles of size 20 to 25 but not air-conditioned

73. In ATA-100 specification the codes for hydraulic, pneumatic, fire protection system and engine indicating system are a) 29,26,39,77

b) 29,36,26,77

c) 36,26,29,79

d) 29,71,36,27

74. MTCS

a) ATA-22 represents communicationb) ATA-54 represents pylons

c) ATA-34 represents lights

75. Fatigue over a man is caused due to

a) long hours of workb) emotional stress

c) noise

d) ATA

76. Static discharge wicks is mentioned in which chapter of maintenance manual

a) chapter number 22

b) chapter number 23

c) chapter number 24

d) chapter number 25

77. The working of piston engine is based on

a) boyles law

b) brayton cycle

c) charles law

d) both a) & c)

78. The mechanical efficiency of piston depends up on a) throttle setting

b) mean effective pressure

c) fuel used and engine speed (rpm)

d) ATA

79. MTCSa) turbojet engines require a shorter runway in comparison to others

b) piston engine is most suitable for higher altitudes

c) turbojet is suitable for higher altitudes but weighs more than piston engine for same power

d) turbojet engines require a shorter runway length in comparison to turbojet engines

80. The ballast used to balance the C.G. of A/C is preferably a) located as close as possible to the C.G.

b) located as far from the C.G. as possible and minimum weight

c) permanent ballast

d) temperory ballast

81. The mica insulator in some commutator is undercut approx. (jeppson,4-17)

a) equal to micas thickness

b) less than 0.020

c) not more than 0.020

d) both a) & c)

82. Three phase full wave rectifier in alternator is made up of (g-2, 4-21)

a) 6 silicon diodes

b) 4silicon diodes

c) 5silicon diodes

d) 3silicon diodes

83. Which unit drops alternator from circuit when an overvoltage condition exists (jeppson,pg4-22)a) ACU

b) APU

c) ADU

d) ACC

84. A variable speed motor is a (FAA 9A,pg-449)

a) shunt type

b) reversing motor

c) series type

d) either a) or c)

85. Split field motor is a (FAA 9A,pg-448)

a) variable speed

b) reversing motor

c) constant speed

d) NOTA

86. Series motor used in A/C because (FAA 9A,pg-446)a) low starting voltage

b) high starting torque

c) low stopping voltage

d) low starting torque

87. AC motor in place of DC motor (FAA 9A,pg-451)a) less weight

b) no brushes, commutator used

c) low maintenance cost

d) ATA

88. Series motor is used to operate (FAA 9A,pg-446)

a) L/G and flap operation

b) gyrometer

c) hydraulic motor

d) both a) & c)

89. Basic shapes out of which all objects are comprised or made by their combination are (jeppesen 5-18)a) triangle, circle, cube, cylinder, cone and sphere

b) triangle circleand cone

c) cone, sphere and cylinder

d) NOTA

90. When acetone is applied to cellulose acetate plastic is (FAA 9A,pg-186)

a) gets soften

b) gives pleasant odor

c) leaves white residue

d) NOTA

91. CHEVRON packings are (G2,7-26)

a) one way seal

b) none c) two way seal

d) can be either

92. In monocoque fuselage construction, the primary load is taken by (FAA 15A,pg-5)a) skin

b) longeronsc) bulkhead

d) both b) & c)

93. The wingtip is attached to the wing with 4 (FAA 15A,pg-12)

a) close tolerance bolts

b) bolts of diameter

c) csk bolts

d) ATA

94. Primary control surfaces are (FAA 15A,pg-18)

a) rudder, elevator and aileronb) trim tab, rudder and elevator

c) rudder, elevator aileron and spoliers

d) NOTA

95. MTCS (FAA 15A,pg-21)

a) aileron balance panels reduces the force to position and hold ailerons

b) balance panels are made from Al. honeycomb skin

c) wing laps reduces landing speed

d) ATA

96. Speed brakes are (FAA 15A,pg-23)

a) controlled electrically, operated hydraulically

b) controlled hydraulically, operated electrically

c) controlled pneumatically, operated hydraulically

d) NOTA

97. Secondary function of spoiler is (FAA 15A,pg-23)

a) to provide lateral control

b) to be used as speed brakes

c) to provide longitudinal control

d) for aileron drag

98. Wheel well and landing gear is supported by a) bulkhead

b) spars

c) keel beamd) longerons

99. Fibre glass is used for its ( C.FOREMAN,PG2-2)a) light weight

b) resistance to chemicals

c) sonic and buffet resistance

d) ATA100.Which is the heaviest composite fiber (C.FOREMAN,PG2-2)

a) carbon

b) fiberglass

c) Kevlar

d) ceramic