[Xmat]

Mod 14 September 2025

Que)egt temparture essential for thermocouple to prevent
1.over heat of combustion chamber
2.higher temperature of turbine blades.
3.over heat exhaust components
4.both B and c

Que2)100 % turbine efficiency is
1.airframe velocity is higher to that of exhaust
2.———————- lesser ———————
3.——————— equal —————————

Que3)eicas
1. electronic indications and cabin alerting system
2. Engine indication and cabin alerting system
3. Engine indinaction and crew alerting system .

Que4)channel A colour
1.green
2.blue
3.yellow

Que5) which of these following is not an output of fedac
1.epr
2.n2
3.egt
4.n1

Que6) which of the following is not an input of Fedac
1.N1
2.N2
3.compressor differential pressure
4.oil temperature/ pressure (don’t remember ) in the drive gear box

Que7)stagnation type in turbine probes are
1. Staggered and unequal in size
2. Diagonally and equal in size
3. Staggered and equal in size

Que8)if any 1 probe from 8 in the egt sensing elements goes open circuit
1. No reading
2. Max reading
3. Remaining 7 proves will average out the reading.

Que9)engine bleed valve 2.5 control by
1.bleed monitoring computer
2.eec
3.Manual selection

Que10) The generator output when the starter reaches ideal speed
1.115 V single phase 400hz
2.210 V 2 phase 400hz
3.24vdc

Que11) torque measurement required for
1.turbine engines
2.Turboprop engines
3.turbojet engines

Que12)turbofan engine is in same as principle of

1.turbojet
2.turboprop
3.reciprocating

Que13)what can cause serious injury in the ignition probe removal
1.voltage
2.high current
2.residual high voltage and current

Que14)gte first starts to rotate
1.fan
2.lp
3.hp

Que15) igniter plugs have
1. iginator 1transformers high tension 1 exciter
2. 2 iginator transformers high tension exciter
3. 2 iginator 2 transformers 2 high tension 2 exciter

Que16)eec gets power from
1.aircraft electrical system
2.opt a + pma
3.idg

Que17)starter stops ignition after engine reaches
1.ideal speed
2.self sustaining speed
3.Maximum speed

Que18)which starter give higher torque and less weight
1.air turbine starter
2.starter gene
3.

Que19)purpose of convergent duct
1.to increase the inlet pressure
2.to let the air reach subsonic speed
3.to decrease the pressure
4.both 1 and 2

Que20)secondary function of compressor
1.to increase the pressure of inlet air
2.to decrease the speed for the combustion chamber
3.To get bleed air for other purposes
4.all of the above

Que21)which is the most commonly used ignition system
1.resistor
2.capacitor
3.inductor

Que22)how to make engine maintenance easy
1.engine monitoring
2.fault isolation
3.—-
4.both a and b

Que 23)mark the correct statement
1.oil temp sensing bulb is present at inlet of the oil unit
2.—-
3.oil temp sensing bulb in present in oil unit
4.both 2 and 3

Que24) Alternator gives
1. AC to fadec
2. DC to AC

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