DGCA PAPER- 2 FEB-11
16, The capacity of capacitor depends on
a) M. of du
b) Dir.. proportional to plate aua
c)Thickness of plate
d) All
17. For transistor to conduct
a) E-B induction forward biased
b) C-B induction .. biased
c) All of above
d)
18. Transistor has coust. as follows
a)Transistor has PNP j..
b) As in 1 grid is rebiased
c)As in 1 grid is forward biased
d)
19.The damping C)K.T consists of
a) Transistor & diode.
b) As in (A) DC supply ..
c) when supply removed it at as demodulator
d)
20. Mooring of large a/c
a) Ropes
b) Cables
c)Chains
d All of above
21. Metals which can be .. easily beaten into shak all called
a) Mallability
b) securt
c)
d)
22. In star connection
a) Line current is equal to phase current
b) Line voltage is equal to phase voltage
c)
d)
23. In p . inductor C)K.T
a)Current lages voltage by 90
b)
c)
d)
24. In o solenoid if N is number of torns of the co .. flowing through it &
current flowing to the solenoid is I then inductanus of coil is (N.)
a) Direc. 2 No of turns
b)Dire .. flux
c)Inu..
d) All
25. In spark test which gives white splings
a) low carbon skell
b)wrought iron
c)
1
d)
26. Which of the cell is not effected by high discharge
a) Secondary cell
b) Ni-cad
c)Lead avid
d) Rechargeable battery
27. In which can be efficiency of xm.. is b.
a)when . loss in Min
b) Iron loss in Min
c) Iron & hy. is Min
d)
28. In which . the efficiency of transformer is before
a)cell loss minimum
b) iron loss minimum
c) iron & hysteresis is min
d)
29. When temperature increases what is the effect of high resistance
a) Increases
b) Decreases
c) Resist
d)
30. When quick assembly disassembly is required?
a) Socket,Nut,Nipple
b)
c)
d)
31. The cable having medium flexibility used is landing gear
a) 7x7
b) 7x19
c) 19x7
32. What is a universal gates?
a) Nor & NAMD
b)
c)
d)
33. The output of dubble AND gate is
a) NOR
b)NAND
c) OR
34.Hexadecimal C5 F2 is
a) 11000101111
b)
c)
d)
35. Binary equivalent of 3754 is
a) 1111010110000
b
c)
d)
36. When the voltage transformer ratio is the unity?
a)
b
c)
d) The No. of turns of secondary is more than primary
2
d) AND
d)
38. Transistor configuration is
a) Common Collector
b) Common Emitter
c) Common base
d) All of the above
39. When bipolar transistor,when both junction are reverse based?
a) It will cut off
b) It will be in saturation
c) as in (a) Vcc=VCE
d) as in (b) Vcc=VCE
40.Before parking the A/c inside the hanger
a) a/c must be completely drained out
b) Fuel tank must be half filled
c) fuel trained except unserviceable remaining
d)
41. Location of signal man during taxing
a) In front of the nose
b) In front of the a/c
c)In the left & noible to pilot
d) In the right
42.The main composition in solder
a) Lead & tin
b) Lead +Silver
c) Lead + antimony
d)All
43. Melting point of silver soldering
a
b
c
d) 500 to 800 F
44. Which composite metal causes corrosion with Aluminium
a) Carbon , Graphite
b) Aramid
c) Boron
d) Fiber glass
45. Which heat treatment is done an all allay
a)
b)
c)
d)
47. The type of fit known as ..
a)
b
c
d
48. Lift generator an upper surface
a
b
3
c
d
49. Definition of detail drawing
a)
b)
c)
d)
50 Definition of expladed drawing
a)
b)
c)
d)
51. Self inductance of f.
a)
b)
c)
d)
52. Form factor..
a)
b)
c)
d)
53. A transformer is stepped up
a)
b)
c)
d)
54. Aerofoil surfaces
a)
b)
c)
d)
55. 5A,12 Find out the total resistance of the ckt and the current flowing through it
a)
b)
c)
d)
56. Find out the total capacitance of CKT
14f
34f
a)
b)
c)
d)
4
60 Oil % chalk process the chalk work is
a) To act as a penetrator
b) Developer
c) Gives dark gray with light gray background
d)All
61. The purpose of flux is
a)reduces oxidation
b)Reduces other contamination
c) Make molten (fused metal to run freely in the weld)
d)All
62. In which type of capacitor the polarity be observed
a) Paper capacitor
b) Mica capacitor
c) Oil capacitor
d) Electrolytic capacitor
63. Which bolt is used in shear never intens?
a) Jo-bolt
b) clevis bolts
c) eye bolt
d)
64. When current passes through 2 conductors in same direction
a) Attracts
b) Repels
c) Not affected
d) None
65. Induction motors are classified as
a) Synchronous motor
b) Asynchronos motor
c) universal motor
d)
66. In Hardness testing the Rockwell tester gives induction by
a)Dia of impression
b) Depth of impression of the hardness value is the difference b/w High valve of low value
c)
d)
67. Transformer
a)Increase roltage
b)Increase current
c)produces voltage
d) produces current
68. Commutator in DC generator
a) Depends upon the no. of coils
b) Provide pulsating DC to the load
c)
d) both (a) and (b)
69.T6 indicates
a) Solution heat treatment 6 alloy of that metal
b) Tempered Hard & 6
c) loaghness SHT & AA
d)
5
70, The capacity test of a battery determined by
a) No of plates
b) electrolyte level
c) Rate of discharging
d) All
71. The combustible metal
a) Increase when02 is rich in the surrounding
b) Environment
c) Decrease
d)All
72. The transistor are
a) Main function is to convert Ac to Dl
b)Bias in one direction not necessary
c)
d)both(a) & (b)
73. 18-8 steel
a) 18% cr & 8.1 Ni
b)
c)
d)
74. For dissimilar metal corrosion occur
i) Anode should be reverse
ii) cathode should be reverse
iii) Electrotype should be reverse
iv) These should be contact between on.. & cathode
a) i,ii are correct
b) i,ii& iii are correct
c) I,ii,iii& iv are correct
d) None
75. 2Mb equals
a)2x21
c) 2x210
b)2x25
d) 2x220
76. Force which tends to pull a part
a) shear strength
b) tensile strength
c)
d)
77. SCR consist
a) There diode
b)
c)
d) All
79. Mercury spillage on al surtall
a) corrosion will take place it not cleaned which is intergranular corrosion
b) surface pitting & corrosion due to continues
presence of Mg. on the surface
c)
d)
6
80. D.. penetrant inspection on used
a)non ferrous material
b) metallic
c) non metallic & non-ferrous
d)All
81. In pulse echo type defect detection
a) Technique
b sub surface defects
c)
d)
82. Slip depends
a)Difference between actual speed of rotor synchronous speed
b)
c)
d)
83.LED is used
a)
b)
c)
d)
84. Diode used as
a)
b)
c)
d)
85. Zener diode is
a) works in reverse biased condition
b) is also called breakdown diod
c)covalent bond break after a certain point
d) All
86. On 2 mm thick al sheet anich a is carried out
a) ultrasonic
b)
c)
d)
87. For a transistor to conduct
a) EB to be forward biased
b) CB to be reversed biased
c) EB to be reversed biased
d) A&B both are correct
