18 Apr 2014

DGCA Paper-2, Oct 2012, Full Que Paper( all 100 que with ans)


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DGCA PAPER II
Aircraft General Engineering And Maintenance Practices
(October Session 2012)

Q1 Flap which increases wing area, camber & chord line
a) Split flap
b) Fowler flap*
c) Zap flap
d) Slotted flap

Q2. Kirchhoff’s current law is applicable only to
a) Closed loop in a network
b) Electronic circuit
c) Electrical circuit
d) Junction in a network*

Q3. Metal tubing is sized by
a) Inside diameter measured by 1/8 inch
b) Outside diameter measured by 1/32 inch
c) Inside diameter measured by 1/32 inch
d) Outside diameter measured by 1/16 inch*

Q4. In UST the pulse echo system is used for
a) Surface crack
b) Subsurface Crack
c) Weld flaws
d) All*

Q5. The content of general purpose solder is
a) Tin, lead, antimony
b) Tin & lead*
c) Tin, lead, silver
d) None

Q6. Color of 100LL Avgas hose stripe/band is painted with
a) Red
b) Blue*
c) Yellow
d) Grey

Q7. Color of O-ring for hydrocarbon fluid is
a) Red *
b) Blue
c) Green
d) Black

Q8. Large a/c have been jacked in open
a) Headed into wind direction*
b) Headed opposite to wind direction
c) Headed at right angle to wind direction
d) It will be placed inside the hanger only

Q9. Corrosion on magnesium is cleaned by
a) Chromium 10% in distilled water
b) Sulphuric acid solution 0.1%
c) 10% by weight of chromic acid + .1% of sulphuric acid *

Q10. What is the correct procedure to extinguish the flame of oxy acetylene flame?
a) 1st close the oxygen & then the acetylene
b) Close both gas cylinders at the same time
c) 1st close acetylene & then oxygen*
d) All

Q11. EICAS is
a) Engine indicating & crew alerting system *
b) Engine indicating & crew announcing system
c) Electronic indicating & crew alerting system
d) Engine indicating & component alerting system

Q12. For removing damaged rivet which type of punch is used
a) Prick punch
b) Drive or Taper punch*
a) Hollow punch
b) Both (a) & (b)

Q13. For converting the galvanometer to the voltmeter connect
a) High resistance in series with meter resistance*
b) Low resistance in series with meter resistance
c) High resistance in parallel with meter resistance
d) Low resistance in parallel with meter resistance

Q14. To make the ferrous vastly superior
a) Carbon is added with iron by 1.25% to 1.5%
b) Carbon is added approx 1%*
c) Nickel & chromium added by 2.5 to 2.75%
d) Copper added 0.5%

Q15. In an inductor circuit the current
a) Lags voltage by p/2*
b) Leads voltage by p/2
c) Lags voltage p/2 when current is less, but leads voltage p/2 when current is more
d) Has no effect

Q16. The Al alloy is more susceptible to corrosion if small %age of______ is added
a) Mg
b) Cu*
c) Si
d) Fe

Q17. R.MS value of half wave circuit current is 10 amps, what will its value for full wave
a) 14.14 amps*
b) 20 amps
c) 20/p
d) 14.14/p

Q18. Electrostatic device service equipment’s can be destroyed by the min. voltage of
a) 50V
b) 100V*
c) 3000V
d) 1000V*

Q19. What will happen when current flowing through two parallel conductors in upward & same direction
a) The field strength b/w two conductors increases
b) The field strength b/w two conductors decreases & conductors attract towards each other*
c) As in (a) & attracts each other
d) Will have no effect

Q20. ATA100 code 27 deals with
a) Air condition
b) Autopilot
c) Fire protection
d) Flight control*

Q21. For operating primary flight controls, the cable which i.e. extra flexible is
a) 7×7
b) 7×19*
c) 19×7
d) Only (a) is correct

Q22. In the turn buckle the end identified by a groove or knurl has which type of thread
a) Right hand thread
b) Left hand thread*
c) There are no thread, as it is push locked

Q23. While storing the aircraft in the hanger
a) The fuel tank should be kept empty
b) The fuel tank should be filled*
c) The fuel tank should be filled to the half of its value
d) The condition of filling oil will depend on the duration of storage

Q24. Depending on the grade it is suitable for use in temp. -65 to 300°F ,with phosphate ester, hydraulic fluid , ketones
a) Neoprene
b) Butyl*
c) Natural rubber
d) Buna S

Q25. The riv-nut is
a) Hollow blind rivet*
b) Solid blind rivet
c) Special solid rivet

Q26. The spark test is used for sorting out which type of metals
a) Non ferrous
b) Ferrous metals *
c) Both ferrous & non ferrous
d) Nickel alloys
Q27.The damaged threads are replaced by

a) The thread bushing
b) The helical insert
c) The Acres fastener sleeves
d) All are correct*

Q28. Cables are having
a) High mechanical strength &high weight
b) Cable linkage problem ,as its tension need to be adjusted frequently*
c) It has low mechanical strength
d) All are correct

Q29. Scratches caused by careless handling and abrasion from grit or water striking a/c at high speed
a) Provide starting for corrosion *
b) Develop crack to the structure
c) Filiform corrosion
d) All are correct

Q30. Least count of vernier caliper having 10 division divided into 9 division of main scale in mm is
a) 0.01 mm
b) O.01 cm
c) 0.10 cm
d) 1.0 mm

Q31. Convert binary 12 excess-3 code
a) 0101 1100
b) 1000 1011
c) 0100 0101*
d) 0000 0011

Q32. Identify the gate
a) OR & NOT gate*
b) NOT & OR gate
c) Bubbled AND gate
d) All

Q33. Regarding servicing of oxygen MTCS
a) Oxygen should not be serviced while fuelling is in progress*
b) While servicing with oxygen, must be carried inside the hangar
c) MEDICAL OXYGEN must always be used for breathing in a/c
d) ALL

Q34. What will be the speed of 3rd gear
a) 100rpm
b) 120rpm*
c) 50rpm
d) 200rpm

Q35.identify the taxi signal (Fig. page no. 521)
a) Left turn*
b) Right turn
c) Landing
d) Start engine

Q36. Regarding thermocouple ammeter which one is true?
a) It is based on Thomsan principal
b) Pointer is attached to the hot junction of thermocouple
c) Heat generated is proportional to square of current*
d) All

Q37. For the statement “Output is low when all inputs are high” gates are
a) Positive OR/ Negative AND
b) Positive AND/ Negative OR
c) Positive OR/ Negative NAND
d) Positive NAND/ Negative NOR*

Q38. Engine starting motor draws high current in initial & at normal Rpm current is reduced, which fuse is used
a) Slow Blow fuse*
b) Glass cartridge fuse
c) F
d) Fuse that melts immediately

Q39. Which of the true about induction instrument
a) Large error in reading alternating current has a different frequency from calibration frequency
b) Power consumption is fairly high
c) Variation in temperature may cause large error
d) ALL

Q40. Capacitor is used in particular circuit is determined by
a) Size of capacitor
b) Type of capacitor
c) Amount of Voltage it can withstand*
d) Current Rating

Q41. An operational amplifier shunt regulator differ from the series regulator in the sense that its control element is connected in
a) Series with line register*
b) Parallel with line register
c) Parallel with load register
d) Parallel with input voltage

Q42. Magnetic circuit of DC gen. consists of
a) Yoke, pole core, armature core, air gap b/w pole & armature core*
b) Pole core, pole coil, brushes and air gap
c) Pole core , armature winding, commutator and air gap

Q43. Which composite material has problem of corrosion
a) Carbon /graphite*
b) Aramid
c) Boron
d) Glass fibre

Q44. Which type of heat treatment is used for aluminium alloy
a) SHT
b) PHT
c) Annealing
d) All*

Q45. The gear that transmits motion in the shaft that are parallel to each other & that are not parallel to each other
a) Spur gear
b) Worm gear
c) Helical gear*
d) Bevel gear

Q46. Internal Defects in the composites are checked by
a) Coin tap test
b) UST
c) Laser holography
d) All*

Q47. The magnetic test of distinguish b/w annealed austenite indicating the non-magnetic & rapid action & greenish blue indication with nitric acid is
a) Pure nickel
b) Nickel steel*
c) Monel
d) 18-8 steel

Q48. The permanent magnet type instrument will have
a) High power consumption
b) Low torque/weight ratio*
c) Not much affected by stray magnetic field
d) Large hysteresis loss

Q49. Piezoelectric effect
a) Compression quartz And produce potential difference
b) As in (a), but frequency depends on thickness*

Q50. Spark plug fires in which stroke of piston engine
a) Induction stroke
b) Compression stroke*
c) Power stroke
d) Exhaust stroke

Q51. In case of class-D fire, extinguisher used is
a) Water
b) Carbon dioxide
c) Foam
d) Dry powder*

Q52. Which extinguisher is having least toxic rating
a) Bromotrifluoromethane (Halon 1301)*
b) Methylebromide (Halon 1001)
c) Chlorobromomethane (Halon 1011)
d) Bromochlorodifluoromethane (Halon 1211)

Q53. Which drawing locate the component with respect to each other within system
a) Schematic drawing*
b) Installation drawing
c) Diagram
d) Drawing

Q54. Quick release fasteners are usually identified by
a) AN
b) NAS
c) MS
d) Factory Trade name*

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Q55. The anode to cathode potential of a gas filled tube at which gas deionises & stops conduction is called ______ potential
a) Extinction*
b) Striking
c) Ionising
d) All

Q56. In a diode if, MTCS
a) Arrowhead is positive with respect to bar, it is in reverse biased
b) Arrowhead is negative with respect to bar, it is in reverse biased*
c) bar is negative with respect to arrowhead, it is in reverse biased
d) only (a) is correct

Q57. Capacitor which is used for high frequency application in very small capacitance value in small size
a) Chip Capacitor
b) Tantalum Capacitor
c) Aluminium capacitor
d) Ceramic capacitor*

Q58. When Pd is increased then a point is reached when a faint luminous spark of bluish color appears along the length of conductor, this effect is known as
a) Spark discharge
b) Corona discharge*
c) Voltage discharge
d) All

Q59. MTCS, Precipitation heat treatment is given to
a) Al alloys heating to a predetermined temperature & then soaking at specified length of time*
a) Al alloys heating to a predetermined temperature & then soaking at specified length of time at room temperature
b) Steels heating to a predetermined temperature & then soaking at specified length of time
e) Ferrous & Iron heating to a predetermined temperature & then soaking at specified length of time

Q60. MTCS,
a) Brinell hardness number indicates the dia. Of impression
b) Lesser the Rockwell no., softer the material
c) Greater the Rockwell no., softer the material

Q61. In Ni-Cd battery electrolyte used is
a) KOH
b) Dil. H2SO4
c) KOH, but effected
d) KOH , but unaffected *

Q62. In the battery when excessive white crystals deposited on the cell indicates
a) Due to the battery overcharged*
b) Due to battery uncharged
c) State of charge
d) Does not effected by rate of charge

Q63. Current transformer is
a) Step up transformer*
b) Step down transformer
c) It has only one secondary winding
d) Connected in parallel

Q64. They spread out the flux in the air gap & also being of larger cross section reduce the reluctance of the magnetic path & support the exciting coils
a) Pole shoes*
b) Armature core
c) Armature core & pole coils
d) Brushes & bearings

Q65. In Step up transformer winding ratio is 1:2, and then output will be
a) Current is doubled
b) Current is half*
c) Will have no effect
d) Voltage will be half

Q66. Power factor defined as
a) Effective/apparent power
b) Cosine angle of phase difference
c) Both (a) & (b)*
d) Apparent/effective & sine angle of phase difference

Q67. Which frequency is used in medium & long distance point to point transmission?
a) MF
b) HF*
c) VHF
d) UHF

Q68. Ventral fin are used for
a) Aids in longitudinal stability
b) Aids in lateral stability
c) Aids in directional stability*
d) Any of the above

Q69. 8 bit register that stores the memory o/p when a memory read operation is performed
a) MAR
b) MDR*
a) IR
b) PC

Q70. Why additives are added in AVGAS
a) To reduce microbial growth in tank
b) To increase the freeze point of fuel
c) To reduce detonation
d) Both (a) & (b)*

Q71. Aerofoil shape found in
a) Wing, stabilizer, propeller,etc.*
b) Wing, fuselage, elevator, aileron
c) Nose of fuselage, wing tip, stabilizers etc.
d) All are correct

Q72. Muntz metal composed of
a) Brass containing 60% cu &40% zn*
b) Bronze containing 60% cu& 40% tin
c) Brass containing 60% zn & 40% cu
d) It is the cu alloy containing mg, ni, al etc.

Q73. Modulus of elasticity can be defined as
a) Stress/ strain within yield point
b) Stress/strain within elastic limit*
c) Stress/strain above elastic limit
d) Strain/stress within yield point

Q74.which of the following allows to pass the current, when the circuit is reverse biased, by breakdown
a) Zener diode*
b) Pnp transistor
c) Triode
d) All are correct

Q75. To change a tyre of a wheel which jack is used?
a) single wheel jack*
b) tripod jack
c) quaderal jack
d) any of the above

Q76. In repair or control surfaces, weight should not be added
a) ahead of hinge line
b) surface will be painted to match with surrounding
c) behind hinge line*
d) mass should be added splice used for repair one size larger

Q77. Kevlar can be identified as
a) white colour
b) strength is 4 times of al alloy*
c) both are correct

Q78. Basic generator consists of
a) Electric field and conductor
b) magnetic field and conductor*
c) magnetic field and inductor

Q79. To reduce the stress corrosion from the sheet
a) increase tensile strength
b) relieving compressive stress by HTMT
c) increase compressive stress by shot blasting*

Q80. Angle of acme thread
a) 90°
b) 60°
c) 45°
d) 29°*

Q81. Working principle or air speed indicator
a) Differential pressure of static probes
b) Difference in pressures around the probe
c) Differential pressure of static and pitot probe*
d) Pressure difference b/w static and atmospheric Pressure

Q82.computer which receives data & do not transfer data
a) MAR & IR only*
b) ALU & PC
c) IR & ALU

Q83. Manifold pressure gage measures
a) Absolute pressure in inches of mercury*
b) Relative pressure in inches of mercury
c) Absolute pressure in lb/ft sq.

Q84. MTCS regarding “meggar”
a) It measures insulation in range of milliohms
b) Two coils are mounted at right angle to each other on a common axis free to rotate in magnetic field*
c) Two coils are mounted linear to each other on a common axis free to rotate in magnetic field
d) none

Q85. MTCS
a) propeller produces small acceleration to large amount of air*
b) turbojet produces small acceleration to large amount of air
c) turbojet is the comprises b/w turbofan and turboprop
d) all are correct

Q86. Movable Parts of micrometre are
a) Anvil and barrel are fixed and thimble is moving*
b) Anvil is moving and thimble is fixed
c) Spindle and anvil are fixed
d) Barrel and thimble are moveable

Q87. Which drawing is used where exact location of part & more view are required
a) assembly drawing
b) orthographic drawing*
c) pictorial drawing
d) installation drawing

Q88. Transistor is used over vaccum tube yet having drawbacks
a) transistor have low power dissipation
b) transistor have low input impedance
c) Transistor is dependent on TEMP. variation
d) all are correct*

Q89. What is tinning?
a) The bit should be heated to a temp. sufficient to melt the solder
b) The tip of the bit should be filed to remove dirt and rough edges
c) The bit should be coated with flux and rubbed against a stick of solder until a thin film of solder adheres to it
d) All are correct*

Q90. When fuelling is done grounding should be
a) First ground a/c then truck
b) Ground a/c & truck both together
c) As in (a) & nozzle is bonded to truck
d) Both (a) & (b)*
Q91. The standard position of the taxi signalmen is
(a) Slightly ahead of & in line with the a/c left wing tip
(b) As the signalmen faces the a/c , the nose of the a/c is on his left
(c) Slightly ahead of & in line with the a/c right wing tip
(d) Both (a) & (b)*
Q92. Operation of a/c with faulty brakes, must be towed
(a) The a/c break system should be charged before each towing operation
(b) The tow tractor must have the brakes in serviceable condition
(c) In case of emergency ,One person stands with the chokes to apply
(d) Both (a)& (b)*
Q93. Which affect the longitudinal control?
(a) Aileron
(b) Elevator*
(c) Tail plane
(d) Rudder
Q94. In case of short circuit of capacitor
(a) Ohm meter will read infinity
(b) Needle of ohm meter can lie anywhere (Needle of ohm meter can move anywhere)
(c) It will read zero then deflect
(d) Reads zero & stays there
Q95. For starting an engine Starter generator requires
(a) High resistance & short time
(b) Low resistance & short time
(c) Low resistance & more time
(d) High resistance & more time
Q96. Conditions for corrosion to occur
a) Presence of positive electrode (Anode)
b) Presence of Dissimilar metal (Cathode)
c) Presence of electrolyte
d) Contact b/w anode & cathode
(1) (a) & (b)
(2) (a), (b) & (c) only*
(3) (a), (b), (c) & (d)
(4) None
Q97. Regarding thermocouple ------ Reference value & actual value
Q98. High lifting device includes
a) Slot
b) Flap
c) Boundary layer control device
d) All are correct*
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Q99. MTCS
a) Collet should be kept within two threads of the lift tube cylinder during raising
b) Collet should be kept more than two threads while raising
c) Screw down firmly to the cylinder after jacking is completed to prevent settling
d) Both( a) & (c)*
Q100. Potential difference of an electrode in a cell is measured in the strength of one electrode in respect with
(a) Other electrode*
(b) Cu electrode
(c) NI electrode
(d) Zn electrode


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