SET 11(30 SEP 2015)1. What is difference between bolt and screw: a) screw is made of lesser strength materialb) screw having no defined grip lengthc) screw differ from bolt only in head styled) all the above

2. In case of the bolt grip length (-9A,Aviation Dictionary)a) it should be equal to thickness of mat generallyb) it may be slighter longer grip length should be used with washerc) must not be longer than mat thicknessd) none

3. furring occurs in MPI when: a) insufficient magnetizationb) excessive magnetizationc) mishandling or cordessness atten/durin magnetizing partd) all the above

4. Mark the correct statement, when securing Al and Mg alloy structurea) Al-washer should be used under steel bolt headb) Al-washer used under nut of steelc) Any corrosion attacks washer rather than structured) All of the above

5. Linseed oil used as a) cleaner solventb) paint removalc) both a & bd) to prevent deterioration of protective treatment and used inside the tube

6. Lapse rate is Mechanics of flight (Kermode)a) rate of decrease of volume as per rise in altitutdeb) rate of decrease of temp. at rate of 1.98 degree c/1000th feet rise in highc) decrease in rate of Pr. With rise in altituded) none

7. Degreasing agent is kept at temp-CAIP BL/8-1-593a) 60 degree 70 degree Cb) 70 degree 80 degree Cc) 70 degree 90 degree Cd) none

8. Clogging of metal particle in the gullet of file teeth is known as -Shop Theorya) peening b) pinningc) cloggingd) stretching

9. Spreading & stretching of metal by hammering is known as -Aviation Dictionarya) peeningb) swaging & peeningc) cloggingd) stretching10. Proper indication in DPI is not obtained becausea) more dye is appliedb) penetration is not properc) improper surface cloaningd) dye used is less in quantity

11. Stress /strain unit is called a) proof stressb) proper final limitc) modulus of elasticity d) elastic limit

12. Load is applied per square inch a material can withstand without resulting in a permanent elongation more than 0.0001 per inch of gage length after complete release of stress is known as a) elastic limitb) proof stressc) proportional limitd) yield strength

13. Pin is useda) in non-load carrying partb) in shear applicationc) is not reusedd) both b & c

14. flat head pin used -9A 195a) in tie rod terminalb) secondary control systems which are not subjected to continuous operationc) both a & b

15. clevis bolt installed a) with castle nutb) with shear nutc) as in a , locked by cotter pind) as in b , locked by cotter pin

16. In respect of self locking nut, MTCS -9A 127a) it is used where rotation is involvedb) it is used in vibrationc) it is used in light connection

17. Tolerance meansa) positive allowance + negative allowanceb) positive allowancec) in orthography not more than 3 view are possible d) both a & c

18. Fit is defined as (Shop Theory)a) friction involved between bolt shank and hole when pushedb) in term of dia of bolt & hole c) both a & bd) all are incorrect

19. Special screw is built FAA 9Aa) for close tolerance applicationb) for shear load applicationc) for heat treated part20. In respect to O ring which is correct -9A 167a) used in Pr. b) A back up is used in high pressure application in actuator cylinderc) Same size shape should be replaced d) All the above

21. the purpose of accumulator is Aviation Dictionarya) it maintain the system pressureb) it provides rational pressure when engine in not runningc) as in a , compensate the small leakaged) as in b

22. post emulsitiable dye is removed in in-situ position by - CAIPa) whipping clean rag damped with dye solvent followed by cleaning by dry rag b) carbon chloride and clean with clean ragc) no requeaning or removald) as requirement manufacturers instruction

23. Lockbolt is combination of a) rivet +b) lock nuttc) bolt +d) rivet +bolt

24. Grindiack indicates as CAIP BL/8.5 ,P.NO.-9a) sharp lineb) irregularities over the affected areac) indicates in magnetic writingd) as built into a ridge which stands proud of the surface

25. Satisfactory magnetic flux in specimen is known by a) thin soft material in which crack has been artificially induced b) by ammeterc) by voltmeterd) none

26. About NAND gate which is correcta) when inputs are given there will be an outputb) when any of the input is not given output will be givenc) more than one output may be obtained but only one input is required d) all of the above

27. galvanometer can be used as voltmeter by a) connecting low resistance in seriesb) connecting high resistance in parallelc) connecting high resistance in seriesd) connecting low resistance in parallel

28. Purpose of tempering is a) to reduce strengthb) to reduce ductility and increase brittlenessc) to reduce hardness and reduce brittlenessd) to increase hardness and reduce brittleness

29. About annealing which is correct during and after annealing a) high rate of cooling fine grainb) slow cooling, low strengthc) slow cooling, high strength d) none

30. Spherodising is done a) prolonged heating just above critical tempb) prolonged cooling just below critical tempc) prolonged heating just below critical tempd) smaller time

31. Mark the correct statement about cable a) on diameter of wire, length is dependentb) strands are laid to build up a cablec) sized by no. of stands multiplied by no of wires in each strandd) all of the above

32. Paint is combination of a) Enamel = pigmentb) Varnish + Enamelc) Pigment +Vehicled) Pigment + Varnish

33. Paint removal is necessary from component, structure when a) corrosion is suspected to run between the paintb) if paint is not compatible with repair scheme then touch-upc) if paint finish is destroyedd) all the above

34. Plastic stored a) horizontally one over another and height should not be more than 18b) horizontally with a protected barrier plastic between two sheetsc) as in a + smaller sheet should be stored over the larger sheet to avoid unsupported overhangd) as in a + larger sheet should be stored above smallest sheet for proper distribution of load

35. Buckling of plastic during stopping prevented by a) storing tilted 10 degree from vertical in a proper bin with the wrapping with masking tapeb) strong horizontally with masking paper tape as protective means with height not exceeding 18c) all the above

36. Working drawing-9A 35a) given rough idea about the component, system drawnb) it includes assembly drawingc) as in b + includes installation drawingd) all of the above

37. Mark the correct statementa) leader line is used to put the dimension overb) phantom lines used to indicate the portion of part not shown on drawingc) break-in line indicates the alternative position of partd) none

38. Drag which dont contributes to the lift of a/c is a) skin friction dragb) parasite dragc) wing drag d) profile drag

39. Due to presence of bacteria in fuel tank which is likely to occura) craves corrosion b) fretting corrosionc) microbial corrosiond) galvanic corrosion

40. If any of the winding in transformer is shorted then a) it is easily can be detected by ohmmeterb) transform will be heated upc) output will be higherd) output remains const of can be checked by magger

41. Mark the correct statement regarding Ni-Cad batterya) Stated charge know by s.g. at electrolyteb) Electron flows from ve and O2 evolved from +ve platec) Electrical leakage can be known by milli-voltmeter test between plate and containerd) Both a & c

42. Brinell no indicated by a) weight applied in lbs divided inch sq. impressionb) weight applied in kgs and divided by mm sq. impressionc) weight applied in kgs and divided m2 impressiond) weight applied in lbs and divided by clia-at impression

43. Which gears tooth cut parallel to the axis of rotation-(Shop Theory)a) spur gearb) herringbone gearc) worm geard) bevel gear

44. Which of the followings having ve coefficient of resistance with increase in temp -9Aa) conductor b) thermistorc) transistord) relay

45. The property of fluid of giving on vapour in sufficient quantity so as to ignite momentarily when flame is applied is known as a) fine pointb) Flash pointc) Vapour pointd) Burning point

46. High pr. O2 cyl. For breathings purposes is identified by a) green color with the letter BREATHING OXYGEN stendled white letter with 1 heightb) yellow color with letter AVIATORS BREATHING oxygen with yellow color 1 hightc) Green color with letter in white with 1hight AVIATORS BREATHING OXYGENd) Yellow color with letter stenciled aviators breathing oxygen.

47. When towing a tail-wheel a/c then MTCSa) Tail wheel must be lockedb) Tail wheel must be unlockedc) As in a + by attaching a suitable roped) As in b+ a suitable skid attachment and lifted upward little.

48. Anchor point of a/c on ground is known as a) screw picketb) pad eyesc) stakesd) spike

49. Light a/c is parked by -9Aa) cableb) chainsc) manila rope with 1 slacknessd) with any rope

50. Before jacking an a/c few steps are taken regarding this mark the correct statement -9Aa) for heavy a/c and smaller a/c same procedure & precaution should be observedb) jack must be of capacity 20% more than the weight to be liftedc) for proper capacity, condition of locking pin or arm , proper functioningd) all of the above

51. Resistance depends on -9A 274a) length, material, temp. cross, sectionb) length , tempc) mat , cross section

52. mark the correct statement-9A 296a) rheostat used to vary voltage in the circuitb) potentiometer used to vary the voltage in circuitc) potentiometer is a 3 terminal deviced) none

53. for tempering condition which is correct-9Aa) T2 indicates s.h.t + cold workedb) T3 indicates sl. H. treated and then cold workedc) T6 indicates

54. Regarding check AN 316 which is correct Aviation Dictionarya) it having right hand thread & left hand threadb) as in a & used under plain nutc) having left hand threadd) as in c & used under plain nut55. Two stoke actuating cylinder is operated by a) two way selector valveb) four way selector valvec) pneumatically operated and also which provide returning force d) all of the above

56. Mark the correct statementa) shunt type ohmmeter is used to measure lower resistanceb) meggar is used for very higher resistancec) multimeter is sensitive more to A.C. than D.C.d) all the above

57. BASIC if expanded gives a) bigginer all purpose symbolic instruction codeb) bigginer all purpose symbolic information codec) bigginer all purpose system Indian coded) bigginer all purpose system instrument code

58. SCR is a) two junction diodeb) three junction diodec) two junctions are forward biased, two ae reverse biasedd) all of the above

59. Mark the correct statement regarding reamera) it is made of high carbon steel or HSSb) it roughens the drill hole to larger size c) as in a + enlarge the drill hole to close tolerance and smoothnessd) all the above

60. Mark the correct statement, regarding check valve functiona) it directs fluid according to planb) it directs fluid in one direction unrestricted & unrestricted flow in either directionc) inline type check valve used in the component to full flow in one directiond) all of the above

61. Current from emitter to collector flows whena) emitter base function is forward biased & base collector junction is reversed biasedb) emitter-base junction is reverse biased & collector base junction is forward biasedc) base collector is closed) none

62. Mark correct statement regarding punch-9A 531a) it is used to locate centre to be drilledb) pin punch is a tapered type punchc) another name for drift punch is drive punchd) all the above

63. Files are -9A 536a) annealed & temperedb) made of high grade tool steelc) hardened & tempered

64. Alodine is applied by a) cladding b) dippingc) primingd) as per manufactures diagonosis

65. For safe balance while jacking a) weight added forward & rearward of fuselageb) must not be jacked on single wheelc) always jacked inside the hangerd) all the above

66. Force acting around a charged body is (Aviation Dictionary)a) electromagnetic fieldb) electrostatic fieldc) magneto motive fieldd) induction field

67. Unit of magnetic flux is Aviation Dictionarya) Weber ( also Maxwell)b) weber / minimumc) guaged) test

68. Which of the following having lowest fusing temperature (Titterton)a) eutectoidb) hypoeutectoidc) hypereutectoidd) electectiod

69. The chemical mixture of Fe & carbon is (Titterton)a) cementiteb) pearlitec) eutectoidd) austentite

70. Shake proof washer used where a) self locking nut not recommendedb) castle, sheer nut not recommended where locking facility not availablec) where frequent removed & installation not desiredd) all of the above

71. Indication voltage is dependent in case of thermocouple on a) material & length of the thermocoupleb) difference in temp. between hot & cold junctionc) resistivity of thermocouple materiald) all

72. Characteristic of diaphragm or capsule dependent on a) thickness of materialb) corrugation depth and number of corrugationc) capsule aread) all of the above

73. Mark the correct statement regarding fire detection sysa) thermal switches connected in each other & parallel series with indicating lightb) thermocouple element works on rate of temperature risec) probes are connected in series between two circuit loop on fenwal spot detection system d) all the above

74. If aluminum part is not quenched within recommended time after heating then -9A 213a) corrosion may occurb) aluminium will be excessive brittlec) reprecepitation will occurd) both a & c

75. Improved quenching can be obtained by, in case of ferrousa) suitable quenching mediab) time gap between soaking & quenchingc) all the above

76. During refueling chock is set at little distance from wheel because -CAPa) to absorb shock when tire is setb) electro static generatedc) chock may be trapped into the fired) chock can be applied if a/c moves during refueling

77. Close tolerance bolts are -9A 123a) pushed into the hole by hand pressureb) it is machined accurately than general purpose bolt and installed by hammering c) used where light drive fit is requiredd) all of the above

78. Mark the correct statement -9A 539a) or less dia hole can be drilled by hand drillb) hole drilled undersized enlarged and smoothened by reamerc) as in b + reamer is made of HSS & carbon steeld) all the above

79. Mark the correct statement regarding washer-9A 131a) Al washer is used with both Al & Mg structureb) As in a and where dissimilar metal corrosion is a factorc) Generally cd plated washer is usedd) All the above

80. Al-alloy rivet 2024 can be used:a) Used on a/c immediately after heat-treatmentb) known as the field rivet, is used more than any other for riveting aluminum alloy structuresc) for riveting magnesium alloy

81. Circular pitch (C.P.) of gears:a) Distance between corresponding point on adjacent teeth at pitch circleb) Imaginary circle passing through the points at which the teeth of the meshing gears contact c) None

82. How angle of object measured:a) Bevel protection & sine rule methodb) Bevel protection onlyc) Bevel protection & cas Rules methodd) Bevel protection & since cas rule

83. How the gear teeth size measured:a) Measured at the chord thickness where pitch circle crosses at pointsb) Measured at the pitch diameter where chord thickness crosses the pointc) Diametral pitch of a gear

84. Identify the bolta) Re-worked boltb) Close tolerance boltc) Clevis bolt

85. MTCS:a) Bolt has right hand threads except in special cases

86. In part no. AN 320-10, 10 is:a) Dia. of nut 5/8b) Length of nut 5/8c) Dia of nut 10/8

87. Identify the bolt ALPPH-88:a) Pull thru lock boltb) Stump type lock boltc) Blind type lock bolt

88. Primary control surface are:a) Aileron, elevator, rudderb) Aileron , Flap, Tabc) Aileron, Elevator, Slot

89. Wings of high speed a/c are:a) Thinner in cross-section than L.A.b) Thicken in cross-section than L.A.c) Same as cross-section than L.A.d) It is thicker toward the wing tip

90. Straight & level flight:a) Thrust = drag & lift = weightb) Thrust>drag & lift = weightc) Thrust>drag & lift >weightd) None

91. Stability of a/c around longitudinal axis is:a) Lateral stabilityb) Longitudinal stabilityc) Directional stability

92. When a/c speed increases, there is a change:a) Dynamic pressureb) Static Pressurec) Gage pressure

93. Inductance which offers resistance to current is:a) In A.C. circuit, inductance reactanceb) In D.C. circuit, inductance reactancec) Bothd) None

94. In an A.c. circuit, inductance causes current to:a) Logs the voltageb) Lead the voltagec) 180 out of phased) phase with voltage

95. A wire of resistance 4 stretches to twice its original length, resistance is:a) 8b) 4c) 2d) 16