Dgca Paper II Feb '13

7/28/2019 Dgca Paper II Feb '13

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DGCAPAPER II -2013 FEB

PREPAREDBY TAAL BOYS

1. ATA code 33 indicates1) Pneumatic2) Navigation3) Lights4) Ice and rain protection

2. After servicing , leakage in Ni-Cd battery should be checked with 1) Milliohm meter2) Milli ammeter3) Milli voltmeter4) Any of the above

3. Find the resistance

1) 2200 +/- 10%2) 2100 +/- 15%3) 3000 +/- 10%4) 1100 +/- 5%

4. Identify the following Gate


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1) NOR2) OR3) XOR4) XNOR

5. Jet engine works on1) Brayton cycle2) Constant volume and varying pressure3) Constant pressure and varying volume4) Both 1 and 3

6. The event of turbine engine cycle which produces thrust1) Compression2) Exhaust3) Expansion4) Both 1 and 2

7. Two raised dashes in the head of a Bolt indicates its material is1) Low carbon steel2) CRS3) Aluminium alloy4) Nickel steel

8. Instrument panels are normally designed to take shock load which is of1) Low frequency and High amplitude2) High frequency and Low amplitude3) High frequency and High amplitude4) Low frequency and Low amplitude


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9. In a piston engine, to complete the whole cycle in each cylinders, the crankshaft mustrotate

1) 360 degree2) 720 degree3)

180 degree

4) 270 degree10.The ignition timing of a piston engine is generally expressed with respect to the

rotation of

1) Magneto2) Camshaft3) Crankshaft4) Both 1 & 3

11.A D.C Generator consists of1) Pole shoes, field windings2) Rotating armature, Field windings, Pole shoes3) Shunt wound armature, Field windings, Pole shoes4) Series wound armature, Field windings, Pole shoes

12.A fixed spoiler that makes the wing to stall at inboard first than outboard to retainaileron efficiency is normally mounted on

1) Trailing edge2) Leading edge3) Wing tip

13.The direction of rotation of a D.C Motor can be reversed by reversing the polarities of1) Armature winding2) Field winding3) Both 1 & 2

14.Pin punch is used for1) To mark on the work2) To drive out damaged rivets3) To mark the center of hole to be drilled

15.Twist drills are made from1) Carbon steel2) Nickel steel


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3) High speed steel4) Both 1 & 3

16.The direction of induced E.M.F can be found by1) Lenz law2) Flemings right hand rule3) Ohms law4) Parzes law

17.Moving coil instruments measure1) Only D.C2) Only A.C3) Both A.C & D.C

18.Which one of the following only measure only A.C? 1) Iron-vane type2) Inductive type3) Permanent magnet type

19.Potential difference is defined as1) Energy of a positively charged particle with respect to the Earth or zero. 2) Energy difference within a circuit which can cause a current to flow.

20.Usually how many Taps are provided for a single diameter?1) One tap2) Two taps3) Three taps4) As in 2 and for each series

21.In repairing the primary and secondary structure, which one of the following is used? 1) Overhaul manual2) Structural Repair Manual3) TCDS4) All of the above

22. Each set of the taps differs from one another in 1) Diameter2) Cross section3) Taperness


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4) All of the above23.Arc welding method suitable for aircraft work is

1) TIG2) Shielded gas welding3) Gas metal welding4) Both 1 & 2

24.The welding method suitable for welding tools and equipments is 1) TIG2) Gas metal arc welding3) Shielded arc welding

25.After welding if it is found that there is pitting adjacent to the weld, it probablyindicates

1) Rapid cooling occurred2) Excessive heat during welding3) Both 1 & 2

26. Control cables used in trim tab control is1) Extra flexible2) Medium3) Flexible

27.The aircraft control cables are designated as1) Number of strands and wires each 2) Suffix and prefix3) Fraction

28.The size of the twist drill can be found in1) Fractions2) Numbers3) Letters4) All of the above

29.Aircraft wires are designated/sized by1) American Wire Gauge (AWG)2) British Wire Gauge (BWG)3) International Wire Gauge (IWG)


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30.The thread designation UNC means the thread is 1) American National Coarse2) American National Fine3) American Standard Unified Coarse

31.The threads that are class 1 fit1) Loose fit2) Free fit3) Medium fit4) Tight fit

32.Lift always acts perpendicular to1) Weight of aircraft2) Parallel to relative wind3) Relative wind direction

33.During any flight instances, when angle of attack increases, Centre of Pressure moves 1) Forward2) Rearward3) Lies within the specified range

34.T6 means1) Solution heat treated2) Artificially aged3) Solution heat treated then Artificially aged4) Solution heat treated then Quenched

35.Which of the following methods is used to identify ferrous metals? 1) Eddy current method2) Radiography3) Spark method4) All of the above

36.Non-ferrous metal is1) Titanium2) Aluminium3) Monel4) All of the above


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37.Most of the aircrafts use 400 Hz A.C system because 1) Has high Inductive reactance2) As in 1 and this allows use of small motors and equipments 3) Has high Capacitive reactance4) All of the above

38.Reamers are used for1) Cutting holes2) Cutting threads3) Cleaning holes

39.The carbon content of medium carbon steel is 1) 0.1 to .30 %2) 0.30 to 0.50 %3) 0.50 to 1.05 %

40.In a resonant circuit1) Power factor is one2) Inductive reactance cancel Capacitive reactance3) Both the current and voltage are in phase 4) All of the above

41.Corrosion occurs due to the irregularities in the crystal structure is 1) Intergranular corrosion2) Dissimilar corrosion

42.The corrosion occurring to two mating surfaces which are normally stationary withrespect to each other

1) Dissimilar metal corrosion2) Fretting corrosion3) Intergranular Corrosion

43.If three (3) landing lights of 20 W are connected to a 12 V aircraft system, the totalcurrent will be

1) 2.0 amp2) 3.0 amp3) 5.5 amp4) 5 amp


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44.The ampere-hour capacity of a lead acid battery varies according to1) Amount of electrolyte2) Plate area and temperature3) Active materials4) All of the above

45.Terminal voltage of a charged Lead acid battery is1) 1.3 V2) 1.275 V3) 1.2 V4)

46.After charging Lead acid battery, if any of the cells are found unbalanced, the batteryshould be

1) Re-charged2) Deep cycled3) Add water to cells having low voltage4) All Of the above

47.Two conductors A & B having same cross section and made of same material. If theresistance of A = 600 ohm and B = 100 ohm, then how many times longer will be A

compared to B?

1) 62) 13) 24) 5

48.To make the constant K to read 1 on 518 degree the value 29.92 of Hg should bechanged to

1) 13.72) 137.23) 17.24) 27.8

49.The electromagnetic force inside a closed ring is changed when1) Its number of turns increases2) Radius increases3) Cross section changes


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4) All of the above50.In an aircraft, the bulk head, stringers etc.. are made from

1) Aluminium alloy (cast)2) Aluminium alloy (Wrought)3) Nickel steel4) CRS

51.Maxwells law to find magnetic flux in a loop1) Utilizes Kirchhoffs loop law2) Limited to single loop3) ..4) ..

52.1180 about Aluminium alloy means1) 80% pure Aluminium alloy2) 99.8% pure Aluminium alloy with one control over heat treatment 3) 11% Aluminium and 80% other alloys

53.Which of the following can measure 1/64th of an inch in common fractions1) Vernier Calipers2) Micrometer3) Wood Rule4) Steel Rule

54.7 X 19 cable means1) 7 wires of 19 strands2) 7 strands of 19 wires each3) 7 strands of 19 wires

55.From the given wave spectrum identify A,B,C and D. 1) Microwave, radio, infrared, Ultra Violet2) ..3) ..4) ..(image of wave spectrum)

56.In a clip-on type ammeter, which transformer is used 1) Step up


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2) Step down3) Current transformer4) Auto transformer

57.Which of the following parts of a Motor retains a small amount of magnetic fieldaround it even after shutting down

1) Armature winding2) Pole shoes3) Field windings

58.Convert decimal (13.5) to binary1) 1101.12) 1011.13) 1000.1

59.If the number of turns and core length of an inductor coil is doubled, then itsInductance is

1) Doubled2) Unchanged3) Quadrupled4) Halved

60.If a bearing is having grooves and both inner and outer races, it is called 1) Ball bearing2) Roller bearing3) Grooved bearing

61.Plain bearings are mostly made from1) Non-ferrous materials2) Takes radial loads only3) Carbon steel4) Both 1 & 2

62.Regarding aircraft wire AN 20 and specification MIL-W-58061) It is copper wire2) It is Aluminium wire3) As in 1 and has high conductance in free air than in conduit 4) As in 2 and low conductance in free air than in conduit


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63.To make the current flow through the following circuit the inputs A & B must be

1) 0 and 12) 1 and 03)

Both 1

4) Both 064.Drag produced by a projecting object from the structure is

1) Parasite drag2) Induced drag3) Profile drag4) Both 1 and 3

65.Taper tap is used for1) Beginning tapping2) Smoothening the hole3) To tap downside of a blind hole

66.The drawing/diagram which locates the parts with respect to each other within thesystem

1) Schematic diagram67.Identify in the correct order


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1) Automatic, Push reset, Push Reset and Pull Off, Switch type68. Angle of attack is the angle between

1) Chord line and relative wind69.SAE means

1) Society of Automotive Engineers70.For hardness testing of Aluminium alloys, which one is used?

1) Brinnel2) Barcol3) Rockwell4) Both 1 and 3

71.Definition of malleability

72.Piston engine is1) Otto cycle2) Four stroke cycle3) Constant volume cycle4) All of the above

73.Hardness testing is the method of determining the result of1) Heat treatment

74.To determine the brinnel hardness number for a metal1) Directly read on dial gage2) Measure the diameter of the impression3) Resistance to penetration

75.For reaming operation, the reamer should be rotated


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1) Anti-clockwise2) In the direction of cutting hole3) One in the direction of cutting and two in opposite direction

76.When drilling a soft metal, the cutting angle should be1) 90 degree2) 118 degree3) 59 degree

77.Tap is used to cut1) Inner thread2) Outer thread3) Both 1 and 2

78.In a combination set, which one can be used as marking gage to scribe lines and asdepth gage

1) Square head2) Protractor head3) Stock head

79.Single throw single pole switch1) Controls only one circuit2) Allows connection between two circuits, one open at a time 3) ..

80.Compass needle is rotated to update it with correction card 1) When servicing the compass2) When any components were changed that affects the magnetic field of compass 3) When annual inspection is carried out4) All of the above

81.The voltage regulator used in heavy duty Alternators is 1) Carbon pile2) Vibration type3) 3 unit voltage regulator4) All of the above

82.The drag produced by wing tip vortices is


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1) Parasite drag

2) Profile drag

3) Induced drag

4) Any of the above

83. According to bernaulli's principle, the fluid when flows through narrow construction the

speed

1) Decreases

2) Increases

3) Remain constant

4) First increases then decreases.

84. If two parts are blended without fusing the base metals, the process is

1) Fusion

2) Non-Fusion

3) All of the above

85. Name the process in which two metals are joined in a non-fusion method?

1) Soldering

2) Brazing

3) Both 1 and 2

86. For castings, stampings, forgings etc.. The NDT method used is?

1) Eddy current method

2) UST

3) Both 1 and 2


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87. Which one of the following is carried out as a special inspection schedule??

1) Check after hard landing

2) Pre-flight inspection

3) Annual inspection

4) All of the above

88. A circuit is completed only when it is having following components

1) Source, Load, Conductor

2) Source, Load, Resistor.

3) Resistor, Load, Conductor.

89. Diode, if forward biased, shows

1) Infinite resistance

2) Low resistance

3) No resistance

90. True power/Apparent power is

1) Power factor

2) Resonance

3) Resistance

91. Find the frequency of the generator having 2 poles and 3600 rpm.

1) 60 Hz

2) 120 Hz


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3) 50 Hz

4) 100 Hz

92. Induced emf depends upon

1) Number of poles

2) Speed of rotation

3) Strength of field

4) All

93. Generator is usually rated in

1) Amp-voltage for a given voltage

2) Volt-hour for a given period of time

3) Watt-Hour for a given period of time.

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Dgca Paper II Feb '13