1. For commercial annealing, cooling is done in1. furnance 2. air3. mica 4. both a & b

2. Cyniding of low carbon steel is quenched in 1. oil 2. brine3. water 4. both a & b 3.How long piece of steel is left in a furnace for soaking1. for long enough to ensure a good even heat throughout2. for 2 hours for per cubic inch of piece3. one hour for each square inch of cross section area4. both a & c

4.Seak often forms on the surface of the metal & dirt blocked on it, cleaning of seaks & dirt from heat threated part is done by 1. steel wire brush 2. sand blasting

3. scap 4. all

5. In Rockwell hardness testing1. softer the piece of metal, the deeper will be the impression under given load2. the hardness is indicated on a dial gage graduated in the B & C scale3. for non-ferrous metal, the steel ball should be used & hardness no read on B scale 4. all the above 5. Flame heating is done for 1. when hardness is required only for a limited depth of the material 2. for small part3. both a & b 4. none

6. The heat of the furnace can be controlled or regulated by 1. be watching the color of the furnace 2. barometer 3. thermo meter

4. all

7. Fatigue crack is detected by 1. ultrasonic 2. radiography

3. body current 4. all

8. End of the steel bars are sometime painted in various1. color & color combination as a means of identifying the carbon constant2. strips identifying the alloy & solid color identifying the carbon

9. 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 jointed 4. all

10. Braze welding is

1. known as force welding (bronze welding)2. a welding in which base metal is not

fuse3. a combination of brazing & welding

4. all

11. Which statement is correct1. low temperature brazing is also known as hard soldering or silver soldering2. silver welding has equal strength of material3. after silver soldering, further heat treatment is required4.both a & b

12.Unit of radio active material is 1. curies & ratherford scane 2.barcol (bequerel)3. both a & b 4. none

12. Radioactie decay is measured in terms of :1.curies 2. half life3.both a & b 4.none

13. Which does not poses in electromagnetic radiation1. X-ray 2. Light3. Infrared ray 4. Thermal

14. Density of radioactive mean is 1. sharpness of image detail a radiograph

2. degree of blackening of a radio graph3. relative brightness of two adjacent area

4. both a & c

15. Welding decay in stainless steel is reduced by 1. stainless steel containing titanium2. low temperature 3. by reducing heating time4. both a & b

16.The term used on worm gear1. threat 2. threat radius3. threat diameter 4. all

17. In flour sent method1. if wet developer is applied, it must be dried2. if dry developer is applied, it must not be dried3. dry for long period4. all are wrong

18. Telescoping gage1. is used for inside measurement2. range from ½” to 6”3. range from ½” to 1” 4. both 1 & 2

19.Hole gage is used for 1.measuring grooves & slots2.measuring small hole3.both a & b4.none

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

1.width of the cutting edge 2.length of the cutting edge3.length of chisel 4.all

21.Which statement is correct1.straight fluted reamer is less tendency the chatter2.spiral type are tapered for the short distance back of end to & in starting3.bottoming reamer have tapers end & are used to short hole 4.both a & b22.Thread may be produced by 1.on a leth with specially shaped cutting tool2.on spirel machine using rotary cutter3.by rolling on spiral machine using dies4.all

23. Needle file are 1.knurid on both side2.knurid on one side only3.use on slat by diameter & watch maker4.both a & c

24.Block spanner is used on 1.round nut having series of knotches or slos cuts on its side2.hexagonal nut with slots3. nut with slots4.all

25.Meshing gear have same 1.teeth2.pitch no. of some size3.dedendom 4.all

26.Vernier scale is used on 1.microscope 2.boroscope3.spheroscope4.all

27.Fibre glass is 1.also known as E-glass or electric glass2.E-glass or borosilicate glass3.Both a & b4.None

28.Welf threads are 1.detection for the warp detection 2.detection is 450 to warp3.bias4.perpendicular to warp

29.Which statement is correct1.force is exerted on charged particle2. force is applied on charged particle moving along the magnetic field

30.Strength of composite depending upon1.type of fiber (bonding material)2.process of manufacture3.heat treatment4.all

31.When two sphere of same mass, one id +ve charged & other is –ve charged, then new mass will 1.change 2.unchanged3. none

32.If the conductor is of 4 & it stretched to twice of its length, then its resistance is 1.12.83.124.16

33.A & B are big & small battery, having same emf. Internal resistance of battery A is 1.less than B2.greater than B3.equal to B4.unaffected

34.Which statement is correct1.battery terminal voltage is equal to battery emf2.battery terminal voltage is less than battery emf3.battery terminal voltage is more than battery emf4.depends on direction of current flow

35.Normalizing is done1.to reduce the internal stresses set up after welding2.to harden the metal3.before welding

36.Choose the correct statement1.File without h&le is called safe edge file2.Single & double cut file give final finish3.During filing lubricant must be used4.File is made of carbon steel, hardened & tang is remains soft

37.Bevel gear is used to1.Transmit motion at an angle2.Take heavier load3.Preside smooth operation in helical gear4.Transmit load between shaft parallel to each other spur gear

38.Drive gear with 100 teeth operate at 120 RPM then driven gear of 50 teeth will rotate. If gdler gear of 60 teeth fitted between them1.in opposite direction of 120 RPM2.in same direction at 120 RPM3.in opposite direction at 240 RPM4.in same direction at 240 RPM

39.MODEM (Modulator – demodulator) is1.A part of CPU2.Input output peripheral3.A operating system4.A language software

40.Input device is1.Keyboard2.Mouse3.Telephone line4.All

41.Transistor is used as1.Rectifier2.Voltage doubler3.Amplifier4.Voltage regulator

42.In Ni – Cd battery negative plate is made of1.Spongy lead2.Pure cadmium3.Cadmium hydroxide4.Nickel hydroxide

43.In lead acid battery electrolyte used as:1.diluted sulphuric acid2.concentrated sulphuric acid3.potassium hydroxide4.amonium chloride

44.Ohm’s law states1.current x voltage2.voltage x current3.resistance x current4.voltage x resistance

45.Metal tubing is identified by wall thickness & in1.1/16” of OD2.1/32” of OD3.1/16” of ID4.1/32 of ID

46.Flexible hose is identified by:1.1/16” of OD2.1/32” of OD3.1/16” of ID4.1/32” of ID

47.End fitting should be used in ½“ metal tubing:1.AN 818–22.AN 818–43.AN 818–84.AN 818–16

48.Metal tubing used in l&ing gear & flap operation should be:1.2024 or 5052.30003.CRS4.Steel hard

49.Normally grip length equal to:1.thickness of the metal to be joined.2.Thickness of the metal to be joined + one complete thread3.Two times the dice of rivet4.None of the above

50.Double phase is used for:1.High shear strength2.Low shear strength3.Easy of forming4.All of the above

51.In riveting edge distance (minimum) should be:1.2 times the thickness of sheet2. 2 times the dia of steel shank3.2 times the head of rivet4. 2 times the length of rivet

52.The main memory of a computer is1.Ram2.Rom3.Hard disk4.Micro processor

53.The binary equivalent of 55 is1.100112.1100013.1000014.110011

54.0.10 mm is equal to 1.0.039”2.0.041”3.0.035”4.0.045”

55.T6 designation of al alloy indicates1.Saln heat treated & then artificially aged2.Saln head treated & then stabilized – T73.Artificially aged only4.Saln heat treated & then cold worked

56.The major alloying element in 7075 al-alloy is1.magnesium2.silicon3.Mg & Si4.Zinc

57.The purpose of turnbuckle is1.to make minor adjustment in cable length2.to adjust cable tension3.both are correct

58.A 7x19 cable is made up of1.7 str&s of 19 wires each2. str&s of 7 wires each

59.A double flare should be used on:1.Stainless steel2.Ni-steel3.Cast iron4.Al-alloy only

60.Bead width of butt weld should be1.2 to 3 T2.3 to 5 T3.¼ to ½ T4.11/3 to 11/2 T

61.On a fillet weld the pinctration requirements an1.60 to 80% of the thickness of the base metal2.100% 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

62.In the fluorescent penetrant inspection1.the defect will show up as a brilliant yellow-green2.the defect will show up as a light yellow-green3.the sound area will appear white4.the defect will show up deep blue-violet

63.In jacking of a/c1.Main wheels are raised together

2.Nose wheel is raised 6” above the ground3.Nose wheel hall which is raised for free movement of it4.None is correct

64.Centre drill is used to1.make hole & reaming in one operation2.make hole & counter sunk in one operation3.make tapper hole4.all

65.For cast iron, the included any of drill is1.118 degree2.70 degree3.90 degree4.140 degree

66.Select the correct statement1.h& taps are available in 2 sets2.bottoming tap is used to smoothen the bottom of a blunt hole3.plug tap is used at the last4.taper tap is used first

67.The external threads on a bar is made by1.taps2.stock3.dies4.reamer

68.The defect in wheel hub is inspected by1.Dye penetrant process2.Magnetic particle inspection3.Eddy current testing4.Ultrasonic testing

69.The voltage rating of fully charged call of 20 Ni-cd battery is1.1.8 to 2.1V2.1.2 to 1.3V3.1.4 to 1.7V4.1.3 to 1.5V

70.If the temerature of a confined liquid is held constant & its pressure is tripled, the volume will1.triple2.be reduced to one – third its original value 3.remain the same4.none

71.If the pitot head is blocked then which instrument will be affected1.ASI2.Altimeter3.Turn4.Slip indicator

72.Which statement is correct1.QNH setting gives height above sea-level of the airport2.QNE setting gives airfield elevtion3.QFE setting makes the altimeter read zero on l&ing at a n aerodrame4.all are correct

73.Through which material will magnetic lines of force pass the most readily1.Copper2.Iron3.Al—4.All

74.How can the state of charge of a Ni – cd battery be determined?1.by measuring the sp. Gravity of the elistrilyte2.by a measured charge3.by the level of electrolyte4.all

75.Which statement concerning the OR logic gate is true:1.any input being 1 will produce 0 output2.any input being 1 will produce 1 output3.all input must be 1 to produce a 1 output