Aircraft General Engineering And Maintenance Practices
(Feb Session 2012)
1. fires in flammable petroleum products or other flammable or combustible liquids, greases, solvents, paints, etc is classified as
a. class A fire
b. class B fire
c. class C fire
2. Heat treatment of aluminum consists of
a. Solution heat treatment
b. Precipitation Heat Treatment
c. Annealing
d. All of the above
3. If distance of cg from datum is 160” and of leading edge of MAC is 140” and length of MAC is 100”. Find MAC %
a. 20%
b. 50%
c. 75%
4. If the input of half wave rectifier is 240 V and transformer has a step down ratio of 8:1, what is the output rms value?
a. 42.2 V
b. 30V
5. Demultiplexer is
a. Output is same as multiplexer
b. Output is opposite of multiplexer
c. As in b CCU regulates in input and output
6. Which of them is a 5 layer device
a. Diac
b. Triac
7. Convert octal code 3574 to binary
a. 011 101 111 100
b. 100 111 101 011
c. 111 101 011 111
8. A metal which can be hammered, rolled, or pressed into various shapes without cracking, breaking, or leaving some other detrimental effect, is said to be
a. Malleable
b. Ductility
9. MTCS regarding “Austenite” is
a. The name given to steel when it is heated above the critical range, consists of a solid solution of cementite in gamma iron.
10. Data transfer in a/C is by
a. Series bus
b. Parallel bus
c. Data bus
d. ARINC 429 bus
11. Speed of induction motor is increased when
a. Number of poles is increased
b. Number of poles is reduced
c.
d. All of the above
12. MTCS
a. turboprop engine requires lengthy runway than piston engine of same power
b. turbojet has more weight than piston engine of same power
c. turbofan required short runway as compare to turbojet
d. all of the above
13. Yellow color stands for
a. Hydraulic
b. Lubrication
c. Coolant
14. Illustrated parts catalog shows which drawing
a. Orthographic
b. Exploded view diagram
c.
15. Pulse echo method can detect which defects
a. Welds flaw
b. Surface crack
c. Subsurface defect
d. All of the above
16. Corrosion along grain boundaries is called
a. Intergranular corrosion
b. Crevice corrosion
c. Galvanic corrosion
17. Aluminum is more susceptible to corrosion when substantial percentage of __________ is present
a. Magnesium
b. Copper
c. Manganese
d. Chromium
18. We can get vastly superior product than iron If carbon is added to iron, in percentages ranging up to
a. Approximately 0.5 percent.
b. Approximately 1 percent.
c. If Nickel 3.50%, chromium 1.55% is present
19. Which resistor has the smallest possible size
a. Wire wound resistor
b. Carbon composition resistor
c. Surface mount resister
20. While selecting a capacitor check for
a. Voltage
b. Size
c. type
d. How much voltage it can withstand
21. Metal tubings are sized by
a. Inside diameter in increment of 1/16 inch
b. Inside diameter in increment of 1/32 inch
c. Outside diameter in increment of 1/16 inch
d. Outside diameter in increment of 1/32 inch
22. Stringers, bulkhead, skin, rivet and extruded section are made from
a. Cast aluminum alloy
b. Wrought aluminum alloy
c. Pure aluminum
23. Two input bubbled AND gate is
a. OR gate
b. AND gate
c. NAND gate
d. NOR gate
24. Slots provided on the armature are not parallel but are staggered at an angle to provide
a. Safety
b. Reduce the humming noise
c. Stability.
d. …..
25. In 18-8 steel 18% is composed of
a. Nickel
b. chromium
c. ……..
d. ……..
26. Parco- lubrizing is a chemical treatment applicable to
a. Aluminum and magnesium parts
b. Iron and steel parts
c. ………..
27. Damaged rivets can be removed by
a. Drive punch
b. Prick punch
c. Hollow punch
d. Both a and b
28. Value of induced emf depends upon
a. Number of wires moving through magnetic field
b. Strength of magnetic field
c. Speed of rotation
d. All of the above
29. If the peak value is 100 volts then at an angle of 30˚ what is the instantaneous value
a. 50 V
b. 100 V
c. 150 V
d. 200 V
30 Wrenches are made of
a) Carbon steel b) Tungsten c) Chrome vanadium steel
31 The type of torque wrench which has the ability to preset the torque
a) Deflecting beam b) rigid frame c) micrometer setting type
32 Fire extinguisher periodic checklist include
a) remove all external dirt and dust
b) check for proper weight
c) no nozzle obstruction
d) all of the above
33 The drag which is contributed by the lift
a) induced drag
b) parasite drag
c) profile drag
34 In straight and level flight
a) lift equals drag and drag is the resistance of the air to objects moving through it
b) thrust equals weight and thrust is derived from jet propulsion or from a propeller and engine combination
c) lift equals weight but thrust equals drag
d) all are correct
35 Variable delivery pump in hydraulic system
36 devices which make it possible to obtain more than one voltage from a single power source
a) Current divider
b) Potential divider
c) Resistance divider
d) All are correct
37 The property of a coil to oppose any change in the current flowing through it called
a) Inductance
b) Capacitance
c) Resistance
d) All of the above
38 Maximum allowable weight without fuel
1. Pay load
2. Zero fuel weight
39 medium threads is
a) Class 1 b) class 2 c) class 3
40 Tied down of large a/c
a) Cable b) rope c) chain d) any of the above
41 aluminum alloy head marking
a) 2 raised dash b ) single raised dash c) astric mark
42 which bolt is used only in tension never in tension
a) Clevis b) eye bolt
43 A thread running length of the fabric
a) Warp b)weft
44 Cable MTCS
a) Frequent adjustment of the cable tension
b) Low mechanical efficiency
c) High strong and high weight
d) all
45 what is an alternator
a) Ac current generator b) dc generator c)ac motor
46 In large a/c dc supply comes from
a) battery only
b) b) battery &TRU
c) c) battery and generator
47 CRT COLOUR
1. Red, green, blue
2. Yellow, red ,green
48 EICAS
1. Engine indicating and crew alerting system
49 RMS value in half wave is 10 amp, what will be the rms value if it is full wave rectified
1. 14.14 amp
2. 20/p amp
3. 40/p amp
50 Zone numbers on aircraft blue prints are used to
1. Locate parts, sections and views on large drawing
2. Indicate different section of aircraft
3. Locate parts in aircraft
51 Which type crack can be detected by MpI using either circular or longitudinal method?
1. 450
2. Longitudinal
3. Transever
52 What Al-alloy designation indicate that the metal has received no hardening or tempering treatment
1. 3003-F
2. 5052-H36
3. 6061-0
53 What tasks are completed prior to weighing an a/c to determine its empty wt?
1. Remove all items except those on a/c equipment list, drain fuel and hydraulic fluid
2. Remove all items on a/c equipment list, drain fuel, compute oil and hydraulic fluid lot
3. Remove all items except those on a/c equipment list, drain fuel and fill hydraulic reservoir
54 Zero fuel wt. is
a) Dry wt. plus the wt. of full crew, passengers and cargo basic operating wt. without crew, fuel and cargo
b) Maximum permissible wt. of a loaded a/c ( passengers, crew and cargo) without fuel
55 The core material of alclad 2024 T4 is
a) Heat treated Al. alloy internally and the surface material is commercially pure Al.
b) Commercially pure Al. and the surface material is head treated Al. alloy
Stain hardened Al. alloy and the surface is pure Al
56 Which number represents the vernier scale uraduation of a m/m
1. .00001
2. .001
3. .0001
57 Which too is generally used to calibrate a m.m or check its accuracy
1. Gauge block
2. DTI
3. Machinist scale
58 Kirchof current law applicable only for
1. Closed loop 2.Junction network 3. Open ckt
59 Fretting corrosion is mostly likely to occur
1. When two surfaces fit tightly together but can move relative to one another
2. When two distance metals are in contact
3. When two surfaces fit loosely together but can move relative to one another
60 Spilled mercury on aluminium
1. Urgently increases susceptibility to hydrogen imbrutement
2. May cause impaired corrosion resistance if left in proposed contact
3. Causes rapid end severe corrosion that is very difficult to control d) all
61 Direction of single phase motor can be reversed by
1. Using reversible switch
2. Changing the connection of both winding
3. Changing the connection of stating winding
62 Flux is used for
1. Reduce oxidation
2. Remove the oxides
4. All
63 O ring color code indicates
1. Size
2. Shape
3. Vapour and fluid compatibility
Q64. Which cable has high resistance to fatigue?
1. Galvanized
2. Stainless steel
3. Carbon steel
65 Which brazing method is used for precious by localized parts
1. Induction
2. Torch brazing
3) Resistance brazing
4. Furnace brazing
66 When all others parameters are remains unchanged
1. Less the aspect ratio, more the induce drag
2. More the aspect ratio less the induce drag
3. Higher the angle of attack, higher the induce drag
4. Higher the angle of attack, less the induce drag
67 In orthographic projection
1. Eight veiws are common
2. Two vines are common
3. One view, two view and three views are common
68 the main purpose of using core in transformers to
1. Reduce reactance
2. Reduce copper loss
3. decrease the reluctance of common magmetic circuit
4. Reduce iron loss
69 Tempering is used for
1. Reduce hardness and ductility
2. 2. Increases hardness and ductility 3.
3. Reduces hardness and brittleness
70 Point in atmosphere at which temp remain content
1. Stratosphere
2. Tropopause
3. Troposphere
4. Ionosphere
71 Convert 127 octal to binary form
a) (1111111)2
72 8085 microprocessor
a) Direct register
73 8085 microprocessor
74 materials such as magnesium and eureka when temperature increases its resistence
a) Its resistance increases linearly with temperature
b) Its resistance decreases with temperature
c) Increases
d) Fairly constant over considerable range of temperature
75) In star connection
IL= √3IP b) VL =VP c) IL=IP D)…
.
76) General purpose solders
a)Tin, lead and antimony b) Tine ,lead and silver
77 During refueling a/c
a) Place chokes
b) Keep the chock little forward
c) Keep the chocke on main landing gear
d) Never keep chocke and parking break should be on
78 standard atmospheric conditions
a)
b) 29.92 mm of inches of HG at 15degree cel
c) 52.8 mm of inches of HG at 15 degree cel
d) 14.7 psi at zero degree at O degree cel
79 Regarding resonance of series ac ckt
a) Xl is less than XC
b) Xc is greater than XL
c) Xl=XC
D)all of the above
80) Semiconductor is used as
1 Rectifier
2 Clipper circuit
3 Clamper
4 All of the above
81) Aluminum alloy is used vastly in a/c due to
a) High strength to weight ratio
b) Ease of fabrication
c) Non magnetic and an excellent conductor
d) AOTA
82bolt with asterisk sign on its head
a)standard steel bolt
83)ATA chapter -51
a)structure
85 arinc 429 sends data in
A) BCD
b) Binary
c) Any one of the language above
86 which is not associated with discharge of LA battery
A) S.g increases
b) Voltage decreases
c) Both
87) What happen when LA battery temp increases?
88) Mark the wrong statement regarding parallel resistor ckt
A) Different resistor has their individual voltage drop
B) Different resistor has their individual current drop
c) Power is additive
89 when current flown b/w two conductor in same direction
a) Field strength decreases and it attract each other
90when one wheel is jacked nose of a/c
a) Should face into wind
b) Opposite to wind
c) Any direction
91) MCTS regarding computer memory
92) Slip speed
93) When the a/c towed in uneven surface where should the tow bar be connected