Set-17 dtd 15/10/151. Heat treatment applicable to aluminium alloy isa) solution heat treatmentb) precipitation heat treatmentc) both a & b

2. Al alloys hardended by heat treatment about 4 to 5 days temp is called

a) Artificial agingb) Natural agingc) As in a & also called room temp agingd) None

3. Given fig. indicate(BL /1-14,13)a) surface finishb) Taperc) Conical

4. Given fig indicate a) Knurling b) spot facingc) counter boringd) Class 3 Bolt

5. Ammeter is a) connects across batteryb) connects across generatorc) is used for measuring charging & discharging of battery

6. Annealing provides a) soft materialb) low strengthc) more difficultd) all

7. Backlash between gear teeth is measured by a) DTIb) Feeler gagec) Micrometer gage

8. Elevator is used to a) for later control b) rotate a/c around lateral axisc) stabilize a/c about lateral axisd) both b & c

9. Which drag does not contribute lifta) induced dragb) parasite dragc) wave balance drag

10.Angle of incidence is defined as a) angle between longitudinal axis & relative windb) angle between longitudinal axis & chord linec) angle between chord line & relative wind

11.In steady & level flight, the dynamic pr. At the tip of the nose of the a/c is

a) maximumb) minimumc) zerod) always more than static pr

12.Torque tube is a) act as rotating member in cable systemb) compression & tension both load can withstandc) used alongwith bell crankd) convert rotory motion alongwith bell crank

13.7 x 19 strands withstanda) 7 strands of 19 wire eachb) 19 strands of 7 wire each

14.Corrosion on high stressed skin can be removed by a) high Al. polishb) by wire brushc) buffing with fine buffing compound on cloth bufferd) polish only

15.In an electrical ckt. If capacitance is 100 microfarad and charge is 10 micro coulomb, then voltage rating would be

a) 100 vb) 10 vc) 1 vd) 1000 v

16.Given figure indicate a) splined shaftb) meshing gearc) gear & pinion

17.Given figure indicatea) double pole double throwb) double pole single throw switchc) single pole double throwd) push pull s/w

18.Given figure indicate a) cabinet fileb) half round filec) knife file

19.Given figure indicate a) buckling bar not field properlyb) excessive drivec) upset head

20.Schematic diagram indicatesa) does indicate individual components b) used in trouble shooting c) aid in installed position

21.Proper cause of intergranular corrosiona) improper heat treatmentb) improper weldingc) corrosion due to non-metal & metal contact

22.In 3Q a/c generator, if 8 pole & 1600 rpm is used then frequency will be

a) 800 Hzb) 1600 Hzc) 400 Hzd) 1200 Hz

23.As per ATA code, hydraulic fluid, pneumatic, fire & engine indicating is

a) 29, 26 , 36, 77

b) 77, 29, 36, 29c) 29, 36, 26, 77

24.In workshop parallel bar is used to a) to raise the objectb) to raise the object one sidec) as in a & in parallel to the vise

25.If one wheel is to be jacked a) heavy jack is usedb) remaining wheel should be chockedc) wheel raised should be raised by 6 to 8.d) No chocking is required

26.Shunt a/c motor is used to drivea) landing gearb) gyro & servo motorc) tap

27.Ac motor is used instead of DC motor a) advantage of AC motor over DC motorsb) less weightc) less maintenance & costd) brush & commutator is not used in AC motor

28.In transformer, the induced emf in secondary depends upona) number of turnsb) frequencyc) frequency & no. of turnsd) frequency, flux & no. of turns

29.Emf induced in generator depends upona) flux linkageb) flux cutc) magnetic field strengthd) rate of change of magnetic flux linkage

30.Meshing gear havinga) same pitch numberb) same sizec) same dedendum

31.Copper bar in 3Q motor is placed deep in stator coila) improve power factorb) high starting torque providedc) high efficiency is obtained

32.In semiconductor having resistancea) infinite resistance at OCb) finite resistance increases with tempc) finite resistance decreases with temp

33.Negative coefficient of resistancea) thermistorb) transistorc) insulator

34.Universal building block is a) OR gateb) NOR gatec) XOR gate

35.Steps in fuel tank is specified by a) low seep, seep, heavy seep

b) stane, low seep, heavy seep, running leakc) running leak, leak

36.Annealing in done for a) maximum ductilityb) softnessc) low strengthd) all of the above

37.Which is pure wrought alloya) cylinder headb) pistonc) cylinder barreld) Alclad

38.Damping in instrument mostly efficient done by a) fluid frictionb) airc) eddy currentd) both b & c

39.High resistance load in electrical circuit is checked by a) AVM meter in DC ohmb) DC battery with lampc) Magneto synchronizerd) Both b & c

40.Welding indicates a) V-weldb) U-weldc) Double beveld weldd) J weld

41.In bevel gear a) motion is transmitted at an angle to the shaftb) as speed reducesc) take heavy loadd) both b & c

42.C.P. (Circular pitch) in gear is identified as a) distance between two adjacent teethb) distance between two adjacent teeth along the pitch circle

43.Conductor having 4 resistance, sretched twice in length then new would be

a) 4b) 8c) 16d) 12

44.In a inductor if no. of turns is increased & core length is doubled then self inductance of inductor would be

a) doubledb) olladriplicatec) halfd) remain same

45.Mark the correct statementa) open end belt take more loadb) cross belt take more loadc) cross between is more efficient than C.P. end belt

46.Which file is used for making slot & keywaysa) knife file

b) square filec) triangular file

47.Brazed welding is a) called bronze weldingb) base material does not fusec) it is special welding having between bracing and welding

operationd) both a and b

48.Aluminium is welded bya) oxidizing flameb) reducing c) neutral

49.In soldering over flow is avoided by a) clay material surrounded all the weld areab) by using fluxc) by using filler

50.In Pb-acid battery spilled electrolyte is neutralized by a) sodium bicarbonate & waterb) as in a & ammoniac) vinegard) none

51.Titanium is heat treated to a) relief internal stressesb) annealing for further cold workingc) thermal hardening to improve strength d) all of the above

52.In commercial annealing, cooling is done in a) waterb) airc) mica

53.How can be dimensional inspection of a bearing in a rocker arm be accomplished

a) a rocker arm be accomplishedb) depth gage and micrometerc) thickness gage & push arbord) telescope gage & micrometer

54.In steel alloya) colour indicate alloy & stripe indicates carbon contentb) colour indicate carbon content & strip indicate alloy

55.If two battery A & B such that A having greater plate area than B, then internal resistance of A will be

a) greater than Bb) smaller than Bc) equal to Bd) none

56.Mark correct statementsa) In nacelle it is measured from the front spar of the wingb) Water line measure height in inches in parallel to the

horizontal planec) Butt line measures width from left to right parallel to the

vertical planed) All of the above

57.Color of 100 LL fuel is identified

a) red bandb) black bandc) red band green stripd) black band yellow strip

58.Color of fuel line a) red colorb) black colorc) brown color

59.Jet fuel is susceptible to rust, dirt etca) water is found in either suspended or in dissolved formb) if cloudiness is found in top but disappear at bottom,

indicate air presencec) microbial organism feeds on hydrocarbond) both a & c are correct

60.MTCSa) read & prince screwdriver having blunt pointb) Phillips screw driver having blunt pointc) Phillips s/d driver is bluntd) Phillips s/d driver is pointed

61.Kirchoff’s law applicable for a) A.C. circuitb) D.C. circuitc) Both A.C. and D.C. circuitd) Both A.C. and D.C. excluded capacitive & inductive

element.

62.Fatigue crack detected by a) ultrasonicb) magnetic particlec) eddy currentd) all of the above

63.In composite impact damage & water disband is inspected by

a) thermal halographb) laser halographyc) ultrasonicd) x-ray

64.In composite, for maximum flexibility core material used is a) Honey combb) Plastic foamc) Resind) All of the above

65.In Rockwell testing measurea) resistance to penetrationb) measuring ball impressionc) depth of penetrationd) both a & c

66.Barcol tester is used for a) steel b) aluminiumc) b & copper

67.Poor welding caused due to a) excessive pressureb) misalignment of electrodec) both a & b

d) excessive current

68.Small a/c is tie downa) after each flightb) as per atmospheric conditionc) need not to be tied down.

69.In rigging & alignment check a) a/c must be leveled on jackb) always not needed for levelingc) cable tension is measured by control at neutrald) all of the above

70.In rigging & alignment check a) a/c must be leveled on jackb) always not needed for levelingc) cable tension is measured by control at neutrald) all of the above

71.Classification of computera) capacity & functionb) as per capacity & connectionc) as per capacity, function & connection

72.Capacitance of capacitor does not dependent upona) plate areab) plate separationc) plate thicknessd) di electric material

73.Gap between soaking & cooling causesa) Re-precipitation b) Strength increasesc) Material becomes more soft and brittle

74.For thread making a) Die & tap is usedb) On lath machine producedc) On rotating machined) All of the above

75.P-N junction diode does not used in a) rectifierb) amplifierc) light detectiond) for light radiation

76.Main memory of computera) ROMb) RAMc) HARD DISKd) FLOPPY

77.For precision drive we usea) torque wrenchb) socket wrenchc) combination wrench

78.In micrometer, f zero of thimble is above the datum , then it is

a) +ve zero errorb) –ve zero errorc) zero error

79.Given reading isa) 0.326”b) 0.324”c) 0.325” d) 0.275”

80.If drill size is not given on drill, then it can be found by a) drill gageb) drill plate gage having fraction on left & number on rightc) go-no go gage

81.In radiography, density defined asa) relative of two adjacent area brightnessb) degree of blackening of radiographc) both a & b

82.Resistance of conductor does not depend upon a) lengthb) shape of cross-sectionc) aread) temperature

83.In relation to workshop practices, the tool telescopic gage is used to:

a) Take internal measurementsb) As in ‘a’ & can take measurements accurately within the

range of ½ “ to 6”c) As in ‘a’ & can take measurements accurately within the

range of ½ “ to 1”d) Both ‘a’ and ‘b’ are correct

84.Small hole gages are used to measure the dimension of:a) Small holesb) Grooves and slotsc) Outside dimensionsd) Both ‘a’ and ‘b’ are correct

85.Needle file is:a) Used by toolmakers, die makers and watchmakersb) It is knurled on one end so that separate handle is not

neededc) As in ‘a’ and is knurled on both ends to prevent slippaged) Both ‘a’ and ‘b’ are correct

86.Needle bearings are roller bearings which are used:a) In small and restricted areasb) Where motion is oscillatory rather than rotaryc) For both axial and radial loadsd) All are correct

87.The greatest size drill amongst the following is:a) No. 1b) No. 30c) 3/16” d) ‘E’

88.Mark the correct statement:a) 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) Spiral fluted reamer is tapered for a short distance back of the end to aid in starting

d) Spiral fluted reamer has a greater tendency to chatter

89.D.P. (diametrical pitch) of a gear gives:a) No. of teethb) Height of the gear teethc) Size of gear teethd) Both ‘a’ and ‘c’ are correct

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

a) Throat and throat radiusb) Throat diameterc) Pitch diameterd) Both ‘a’ and ‘b’ are correct

91.½ — 13 NC— 3B indicates:a) Pitch diameter is ½ “b) 13 NC indicates 13 TPI of National formc) 3B indicates class 3 fit of external threadsd) All are correct

92.In a gear system, the driver and driven gears are on different shafts, to get the same direction of rotation:

a) Bevel gears are usedb) One of the gears should have internal teethc) As in ‘a’ and no mechanical advantage is obtainedd) None of the above correct

93.The given figure indicates:a) Both take radial load onlyb) ‘A’ takes radial load and A B

‘B’ takes both radial & thrust loadsc) Both take thrust load only

94.Least count of a micrometer is 0.01mm. reading on the sleeve is 0.5mm and 27th division is with the datum and it has an error of +0.005cm. find the reading:

a) 0.077cmb) 0.072cmc) 0.72cm

95.Pitch of a micrometer is 1mm and thimble scale is divided into 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 of the micrometer and the diameter of the wire from the above readings:

a) 0.001cm and 0.245cmb) 0.01cm and 2.45cmc) 0.1mm and 0.245mm

96.Find the micrometer reading from the given diagram:a) 0.2262”b) 0.226”c) 0.2230”

97.External threads are checked by:a) Roller and anvil type caliper gageb) Ring thread, gage is usedc) As in ‘a’ and ovality can also be checkedd) All are correct

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

a) Mud and strawb) Dope and fabricc) Fiber reinforced plastic (FRC) and Aramidd) All are correct

99.Hybrid means:a) Two types of fibers combined to increase strength and

reduce costb) Interply and intraply are the samec) As in ‘a’ and Carbon/Graphite blended with Kevlar are used

to substitute Boron fibersd) All are correct

100.Identify the parts according to the numeric sequencea) Anvil , spindle,thimble,sleeve,frameb) Thimble, Sleeve, Spindle , Frame , Anvilc) Thimble, Sleeve, Spindle , , Anvil ,Frame d) Barrel, Sleeve, Spindle, Anvil, Frame