DGCA AME Paper 2 June 2013

DCGA AME LICENCE EXAMINATION PAPER 2 - JUNE 2013

1) When a diode is checked for an open circuit or a short circuit it should be a) in the circuit b) checked with milli amp meter c) disconnected from the circuit 2)When handling a high voltage capacitor in an electrical circuit be sure it a)has a full charge before removing it from the circuit b)has at least a residual charge before removing it f rom circuit. c) it fully discharge before removing from circuit 3)Which is following most likely to cause a thermal runwa y in a NI-CAD battery 1)a high internal resistance condition b)excessive current drawn from battery c)constant current charging battery to more than 100% of its capacity 4) For general electrical use in a/c the acceptable method of attaching a terminal to a wire by A) crimping b) soldering c) crimping and soldering 5) As the angle of attack of an aerofoil increases the center of pressure will a) move toward the trailing edge b) remain stationary because both lift and drag component increase proportionally to increase angle of attack c) move toward the leading edge 6) The chord of a wing is measured a) wing tip to wing tip b) wing root to wing tip c) leading edge to trailing edge 7) The purpose of wing slat is to a) reduce stalling speed b) decrease drag c)increase speed on take off 8) The basic air cycling cooling system consists of a) a source of compressed air, heat exchanger and a turbine b) heaters, coolers ,and compressors c)ram air source ,compressed air and engine bleed 9) The purpose of damp valve in a pressurized aircraft is to relieve a) all +ve pressure from the ca bin b) a –ve pressure differential c) pressure in excess of the maximum differential 10) Before fueling an a/c by using the pressure fueling method what important precaution should be observed. a) the truck pressure must be correct for that refueling system b) the truck pressure must be adjust for the minimum f ilter pressure c)an a/c electrical system must be on to i ndicate quantity gauge reading d)a/c booster press pump and truck pressure should be equal’ equa l’

11) The function of a CRT in an EFIS is to a)allow the pilot to select the appropriate system configuration for the current situation b)display alpha numeric data and represented of a/c instruments c)receive and process input signal from the a/c and engine sensors and send the data to the appropriate display 12) The function of a Symbol Generator (SG) CRT in an EFIS is to a) receive and process input signal from the a/c and engine sensors and send the data to the appropriate display b)allow the pilot to select the appropriate system configuration for the current situation c)both a and b are correct 13) A voltage regulator controls generator o/p by a) Introducing a resistance in generator to battery lead in the event of overload b)shorting out field coil in the event of overload c)varying current flow to generator field coil 14) What type of instrument is used for measuring very high value of resistance a) mega ohm meter b)shunt type ohm meter c)multi meter d)ATA 15) If one switch is used to control n avigation lights the lights are most likely connected a) in series with each other and parallel to the switch b) in series with each other and series to the switch c)parallel to each other and series to the switch 16) How is generator rated a) watt at rated voltage b) amp at rated voltage c) the impedance at rated voltage 17) Smoke in cargo and baggage compartment of a n a/c is commonly detected by a) chemical reactor b) photoelectric cell c) sniffer 18) Schematic diagrams are best suited for which of the following? a) showing the visual details of individual components in a system b)showing the overhaul location and appearance of com ponent in a system c) troubleshooting system malfunctions 19) The useful load of an a/c is the difference b/w a) the maximum t/o weight and basic empty weight b) maximum t/o or ramp weight as applicable and zero fuel weight c) weight of a/c with all seats filled full baggage and cargo and minimum operating fuel 20) What is the generally used in the construction of a /c engine firewall? a) chrome molybdenum alloy steel b) Mg-Ti alloy steel c) Titanium d) stainless steel

21) Unless otherwise specified or required a/c bolt should be installed so that the bolt head is a) upward or in a rearward direction b) upward or in a forward direction c) downward or in a rearward direction 22) The ALCLAD is a metal consisting of a) Al-alloys surface layers a pure Al core b) pure Al surface layers of an Al alloy core c) a homogeneous mixture of pure Al and aluminum alloy 23) where is an an-clevis bolt used in airplane? a) for tension and shear load condition b)where external tension loads are applied c)only for shear load applications 24)Fretting corrosion is most likely to occur a)when 2 surface fit tightly together but can move relative 2 one other b)only when two dissimilar metal is contact c)both (a) and (b) are correct 25) Kirchhoff’s current law is applicable only to? a) closed loop in network b) electronic circuit c)electrical circuit d)junction in network 26) Metal tubing is sized by a) inside measure by 1/8” b) outside measure by 1/32” c) inside measure by 1/32” d)outside measure by 1/16” 27) What is the correct procedure to extinguish the flame of c2h2 a) 1st c2h2 and then o2 b) 1st o2 and then c2h2 c) both same time 28) In an inductor circuit the current a) lag voltage by Ω/2 b) lag voltage by π/2 c) lag current by Ω/2 29) The al-alloys more susceptible to corrosion if small % of ------- is added a) Mg b) Cu c) Si d) Fe 30) RMS value of ½ wave current is 10 amps than full wave? a)14.14 amps b)20 amps c)20/π d)14.14/ π

31) For operating flight control surfaces the cable which i.e. extra flexible is a) 7×7 b) 7×19 c) 19×7 d) only (a) and (c) is correct 32) 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 AND d) positive NAND/ negative NOR 33) Engine starting motor draws high current in initial & at normal rpm current is reduced, which fuse is us ed a) slow blow fuse b) glass cartridge fuse c) fuse d) fuse that melts immediately 34) 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 35) The anode to cathode potential of a gas filled tube at which gas deionizes & stops conduction is called ______ potential a) extinction b) striking c) ionizing 36) 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 37) 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 38) 8 bit register that stores the memory O/P when a memory read operation is perf ormed a) MAR b) MDR c) IR d) PC 39) 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 atmosphere pressure

40) Transistor is used over vacuum tube yet having drawbacks a) transistor have low power dissipation b) transistor have low input impedance c) transistor is dependent on temperature variation d) all are correct 41) In case of Class-B fire, extinguisher used is a) water b) carbon dioxide c) foam d)flammable 42) The type of torque wrench which has the ability to preset the torque… a) deflecting beam b) rigid type c) micrometer setting 43) ATA chapter 33 indicate a) lights b) doors c) window d) rotors 44) After servicing the internal resister of battery is measured by--a) milli ammeter b) milliohm meter c) milli voltmeter 45) Diagram of XOR gate 46) The event of turbine engine cycle which produce thrust a) compression b) exhaust c) expansion d)both (a) and (b) 47) In a piston engine to com plete the whole cycle in each cylinder the crankshaft must rotate a) 720 b) 360 c) 270 d) 180 48) The exposed parts of aircraft produced which drag------a) parasite b) profile c) induced 49) Angle of attack-----the angle between the chord line and the relative wind it increase lift increases 50) Regarding Single Pole Single Throw Switch a) single pole single throw allows a connection b/w 2 contacts b) either in open or closed. c) as in (b)and used for control generator and power d)ATA

51) (1101.1)2 = decimal13.5 52) How can reverse the motor direction-----a) reversing the direction of current flow in direction to the armature o r the field winding b) either 53) To correct a cell imbalance during recondition the battery is typically discharged to zero capacity and the recharge a) deep cycle b) re-cycle c) both 54) The plain bearing takes load in which direction---a) radial load only c) also made of nonferrous alloy c) both 55) Which bearing have inner and outer race and mostly preferred in aircraft-----a) ball b) roller c) grooved d) tapered 56) During the installation of battery in the aircraft-----terminal is connected in first in order to------a) positive and to avoid the accidental short 57) Which gate is called is called universal gate a) AND b) NAND c) XOR d) XNOR 58) In intergranular corrosion the NDT is most effective a) x-rays or gamma rays b) eddy current c) ultrasonic d) DPI 58) Ice-Box rivet are a) 2017 b) 2024 c) 2117 d) both (a) and (b) are correct 59) Angle of attack is the relation b/w a) chord line and relative wind b) plane of rotation and helix angle c) longitudinal axis and relative wind d) ATA 60) H2 indicated a) strain hardened and partially annealed b) partially annealed and stabilized c) stabilized and artificially aged

61) High meter sensitivity 62) Conversion of Mega Hz Giga Hz 63) The a/c skin is thin which nut is used to riveted a) rivnut b) hollow blind rivet c) tinnerman nut d) floating anchor nut 64) Which process is to reduce the internal stress set up by heat treating welding casting forming or machining on steel? a) harding b) normilising c) annealing d) case hardening 65) In high pass filter passes a) carrier wave and high amplitude wave b) am wave 66) The standard demagnetize practice should be done by--? a) AC b) DC c) both AC and DC 67) To correct the lines visible line, hidden, center line, fantem line 68) The definition of brazing and soldering 69) Titanium is welded by? a) gas inert arc weld b) TIG c) MIG 70) An a/c with an empty weight of 1200 lb .cg is +41.2 were altered to +43.2.how much ballast is required to maintain cg? a)100 b)120 c)200 d)50 71) Find the frequency of generator having 2 poles a nd 3600 rpm? a)50Hz b)60 Hz c)100 d)120 72) Diode if forward bias shows? a)infinite resistance b)low resistance c)high resistance d)ATA

73) Which one of the carried out a special inspection schedule? a)check after landing b)preflight inspection c)annual inspection d)both a and b 74) Hardness testing is the method of determining of the result of? a)tensile strength b)heat treated* c)both 75) Piston engine works on? a) Otto cycle b) four stroke cycle c) constant cycle d) ATA 76) For hardness testing of Al alloys which one is used? a)brinel b)barcol c)rockwell d)both 1 and 3 77) Drag provide by projecting object from the structure is? a) parasite drag b)induced drag c) profile drag d)both (a) and (c) 78) In the figure, to make the current flow throw following circuit the input a and b must be? a)0 and 1 b)1 and 0 c) both 1 d)both 0 79) Regarding a/c wire an-20 and specification mil- w5606? a)Al-alloy b)Cu-alloy c) as in (b) has high conduction in free air than in circuit d)as in (a) has low (high)conduction in free air than in circuit –so wrong 80) If the no of the turn and core length of inductor coil is doubled than it inductance is? a) doubled b) unchanged c)quadrupled d)halved 81) In a clip type ammeter which type transformer is used? a) step up b) step down c)current transformer d)auto transformer

82) After charging lead acid battery if anyone cell is f ound unbalance battery should be? a) Re-charged b) Deep cycled c) add water cell having low volta ge d) any of the above 83) If the 3 lights of 20w are connected to a 12 v a/c system, I? a)2.0 amp b) 5 amp c) 5.5amp d) 3.0 amp 84) Drill cut holes? a)NF b)NC c)UNF d)ATA 85) Reamers is used for? a) cutting holes b) cutting threads c) cleaning holes d) cutting countersunk holes 86) The size of twist drill can be found in? a) fraction b)letters c)numbers d)ATA 87) Which of the following is measure only a c? a) iron wane type b)induction type c)permanent magnet type 88) Twist drill is made from a) Carbon steel b) Nickel steel c) high speed steel d) both (a) and (c) 89) Most of the a/c uses 400Hz why? a) has high inductive reactance b)as in 1 allow use of small motors an equipment c) has high capacitive reactance d)ATA 90) The ignition timing of the piston engine is generally expressed with respect of the rotation of? a)magneto b)camshaft c)crankshaft d)both (1) and (3)

91) A fixed spoiler that makes the wing is to stall at inboard first than out boarded tertian aileron efficiency is normally mounted in a)Trailing edge b)Leading edge c)Wing tip d)ATA 92) Micrometer reading 0.2792 93) Verniar caliper scale 1.436 94) The vertical distance b/w top of the plate at the bottom of the lowest 15/64” hole is ? 2.367 (taken from jappeson QB) and a lso see the figure* 95) Figure of variable resister, tapped, and fixed resister