(Feb Session 2013)
2 -kirchoffs current law is applicable to A - junctions network
3 - the RMS value of a half rectified current is 10 amps. what is da value for full wave? A - 14.14
4 - MTCS when the current flowing thru two parallel conductors is in same and upward direction A - the field strength in b/w the conductors decrese and the conductors attract each oder
5 - ATA chapter 27 A - flight controls
6 - for removing damaged rivets the type of punch used is A - drive punch and tapered punch
7 - to make ferrous metals vastly superior to to iron A - carbon is addded to approximatly 1%
8 - the aluminium alloys are more susceptible to corrosion when percentage of ______ is used A - copper
9 - when selecting a capacitor for a ckt which parameter has to be observed A - amount of voltage to wich it is subjected
10 - MTCS regarding control cable A - cable linkage has some disadv as its tension has to be adjusted frequently
11 - contents of general purpose solder are? A - tin lead antimony tin and lead tin lead silver
12 - which type of h/t is used for aluminum A - ALL ( SHT PHT ANNEALING)
13 - metal tubings are sized by A - OD measured fractionally in 1/16in
14 - In NDT pulse echo method is used for detecting A - ALL ( weld flaws, surface cracks , internal flaws)
15 - PMMC type instrumnts hav A - not much affected by stray magnetic field
16 - wich type of frequency is used for point to point, line to point and audio broadcasting A - MF , HF , UHF , EHF
17 - a step up transformer has a ratio of 1:2? what wld be the value of current? A - half
18 - additives are added to fuel to? A - prevent microbiol growth , detonation , to prevent freezing , both 1 and 3
19 - a current transforemer is A - step up
20 - ASI Principle is ? A - pitot + static pr
21 - when an aircraft is parked in a hangar A - the fuel tank shld be completly filled
22 - type of hose that is compatible with phosphate ester base is A - butyl
23 - corrosion in magnesium is removed by chemically treating it with A - 10% chromic acid plus 0.1 h2SO4
24 - flashes of lighting due to high static discharge is known as A - corona effect
25 - MTCS regarding hardness testing A - brinel no is dia of impression rockwell testiin - lowewr the
hardness no. softer the material rockwell testin - higher the hardness no. harder the material none of the above
26 - in gas filled tubes the effect of deionisation is known as A - extinction
27 - during wich stroke does the spark plug fire A - compression
28 - what is precipitation h/t A - (2)
29 - in an inductor the current A - lags the voltage by 90*
30 - the included angle of acme threads are A - 29*
31 servicing of oxygen systems A - never done during fueling
32 - parts of an elementary generator are A - magnetic field and conductors
33 - marshalling diagram A - left turn
34 - to xtinguish class d fires A - dry powder
35 - during tie down A - aircraft headed in direction of wind
36 - position of signal man A - slightly ahead and in line wid a/c left wing tip and nose of the aircraft shld b on his left
37 - the modulus of elsaticity is A - stress / strain within elastic limts
38 - if triangle of diode is connected to negative wrt to bar den A - reverse biased
40 - if 10 divisions of the verneer scale coincides with 9 divisions on the main
scale and the main scale is calibrated in cm. what is the LC A - 0.001cm , 0.001mm , 0.01cm
41 - to convert a galvanometer to voltmeter A - connect a high resistance in series
42 - MTCS regarding kevlar A - its tensile strength is 4 times more as compared to aluminum
43 - spark test is done to identify which type of metal A - ferrous
44 - MTCS regarding micrometer A - barell and anvil are fixed while spindle is movable
45 - damaged rivets are removed by A - drive or tapered punches
46 - wich is extra flexible cable A - 7x19
47 - quick release fasteners are idntified by A factory trade name
48 - rivnuts are A - hollow blind rivets
49 -wich gear is used to transmit motion at parellel and non parallel direction A -helical gears
50 - wich are high lift devices A - flaps , slats , boundry layer devices , all
51 - what is used to control the aircraft around longitudinal axis a - ailerons
52 - which has aerofoil shape A - wings stabilzers and prop blades
53 - which flap increses wing camber and area A - fowler flap
54 - how to decrese stress corosion A - by applyin compressive stress by sand blasting
55 - muntz metal has A - 60% cu and 40% zinc
56 - which metal shows non-magnet and reacts rapidly with nitric acid A - nickle steel
57 - a knurl or groove on the barrel indicates A - left hand thread
58 - damged internal thread can be repaired by A - acress sleeve, helicoils, replacement bushings , All
59 - ESDS is dangerous above A - 100 volts
60 - piezo elec crystals are made from A - quartz and freq depends on thickness
61 - to provide a low reluctance path for magentic flux in a dc generator A - pole pieces and shoes are used to reduce the air gap
62 - NDT methods used for composite structures A - coin tap test, laser holography , thermography , all
63 - bonding during fuelin A - first bond aircraft then vehicle and both aircraft and vehicle shld be bonded together
64 - MTCS regarding nicd batt A - electrolyt doesnt take part during discharge
65 - a fully serviced nicd batt , white diposits found on top of batt casing A - due to overcharge
66 - band color on hose and piping equipment for 100ll fuel A - blue
67 - a shorted capacitor when connected to a ohm meter will read A - ???
68 - difference b/w shunt register as compared to series register in an operational amplifier A -
69 - draw back of transistor when compared to vacuum tubes is A - they are heat dependant
70 - power factor is A - true power/ aparent power and cos theeta
71 - MTCS regarding themocouple A - heat is directly propotional to square of the current
72 - wich capacitor has high capacity and long storage life A - tantalum
73 - engine starter motor contains wht elements A - ??
74 - elements required for corrosion A - electrodes and electrolyte
75 - the charge on one electrode depends on A - the other electrode
76 - wich is the least toxic xtinguisher A - 1301
77 - in oxyacetelyne welding its a good practice to turn off A - acetylene first then oxygen
78 - tinnin is the process of A - the soldring bit should be tinned or coverd with solder bfore solderin
79 - wich is an 8 bit register A - MDR
80 - covert decimal 12 to excess 3 code A ??
81 - diagram of or - not gate A - all
82 - MTCS if all inputs are high then output is low A - positve or / negative and..... etc
83 - during rigging of control surface no weight shld be added A - behind the hinge line
84 - calculate the speed of gear A - 120
85 - induction type measurin instrument A - all
86 - thermocouple used in engines. what is the indication when at constant temp A ??
87 - manifold pr gauge measures in A - mercury - hg
88 - MTCS A - turbo jet is a combination of turbofan + turbo prop
89 - collet jack A ??
90 - towin of aircraft A - make sure brake is fully charged - if brake is faulty den person shld carry chokes incase of emrgency
91 - MTCS A - little thrust , large volume of air
92 - scratches or craks durin flight can lead to A - corrosion
93 - color of o-rings used for hydrocarbons A – red