DGCA Module 14
1st Session of 2026
1. Which engine produces less noise.
A) Turbofan
B) Turbojet
C) Turboprop
Answer
2. Gas Turbine Engine (GTE) uses which spool for starting.
A) LP spool
B) HP spool
C) IP spool
Answer
3. What is the caution color used in EICAS.
A) Red
B) Yellow
C) Green
Answer
4. What is the location of the APU in an aircraft.
A) Rear section of aircraft
B) Front section of aircraft
C) Wing section of aircraft
Answer
5. In an axial compressor, high efficiency is achieved at.
A) Low speed
B) Low pressure ratio
C) High speed
Answer
6. Which of the following is not included in an APU system.
A) Starter
B) Fuel tank
C) Turbine
Answer
B) Fuel tank
7. What is the function of an oil scraper ring.
A) Prevents oil from entering the combustion chamber
B) Prevents excess oil between wall and piston
C) Removes excess lubricating oil from cylinder wall
Answer
8. Fuel battery hybrid system belongs to which type.
A) Series hybrid
B) Series-parallel hybrid
C) Parallel hybrid
Answer
9. Which of the following are the four factors of a V-n diagram.
A) Fuel flow, thrust, drag, pressure
B) RPM, torque, altitude, temperature
C) Load factor, airspeed, weight, maneuver limit
Answer
10. What protects the APU from FOD (Foreign Object Damage).
A) Screen installed on inlet
B) Compressor blade
C) Turbine nozzle
Answer
11. Commonly material is used between groove lands and.
A) Groove land
B) Piston ring
C) Ring land
Answer
12. Most civilian transport aircraft engines have which type of bypass ratio.
A) Low bypass ratio
B) High bypass ratio
C) Zero bypass ratio
Answer
13. The alternator gives what type of supply to FADEC.
A) AC supply to FADEC
B) DC supply to FADEC
C) Hydraulic supply to FADEC
Answer
14. If an aircraft is made fully electric, what challenge will it face.
A) Life to weight ratio
B) Energy storage to energy ratio
C) High aerodynamic drag
Answer
15. Which type of ignition system is used in a piston engine.
A) DC motor/electric or magneto starting system
B) Multiple starting system
C) ………. which is used by turbine engines to start
Answer
16. Which unit converts data into digital form in an engine control system.
A) EEC / ECU
B) Fuel control valve
C) Hydraulic actuator
Answer
17. What is the purpose of a fuel heater.
A) Prevent ice formation in fuel tank
B) Uses bleed air or oil to heat fuel
C) Both A and B
Answer
18. What is the location of a tractor propeller.
A) Downstream end behind the supporting structure
B) Mounted inside the fuselage
C) Upstream end of a drive shaft in front of the supporting structure
Answer
19. A group of thermocouples used in EGT measurement is used for measuring.
A) Stabilized temperature
B) Maximum temperature
C) Average temperature
Answer
20. A differential pressure valve maintains.
A) Constant pressure difference
B) Variable pressure difference
C) Zero pressure difference
Answer
21. Modern ignition systems use which type.
A) Resistive type
B) Capacitance type
C) Inductor type
Answer
22. Turbine rotates but engine does not start. What is the reason.
A) Excess fuel pressure
B) High oil temperature
C) Insufficient voltage supply
Answer
23. Which type of oil sump system is used in an APU.
A) Dry oil sump system
B) Wet oil sump system
C) Neither wet nor dry sump system
Answer
24. Bridge circuit uses ……… With DC references.
A) Within indicator
B) External reference indicator
C) TR unit output
Answer
25.
26. What is the position of a tachogenerator.
A) Mounted on turbine casing
B) Mounted near exhaust section
C) Mounted on front accessory gearbox
Answer
27. In a variable pitch propeller, most pitch changing action is carried out by.
A) Hydraulically operation
B) Electrically operation
C) Pneumatically operation
Answer
28. What is used in a tank circuit.
A) Resistor and capacitor
B) Transformer and rectifier
C) Inductor and capacitor
Answer
29. Thermocouples commonly use which materials.
A) Chromel and Alumel
B) Copper and Iron
C) Silver and Nickel
Answer
30. Capacitors are generally.
A) Air cooled
B) Oil cooled
C) Water cooled
Answer
31. Ignitors use which type of ignition system.
A) Resistive type
B) Capacitor type
C) Inductive type
Answer
32. Aircraft size mainly depends on which factors.
A) Take-off weight and aircraft size
B) Landing weight and aircraft size
C) Landing weight and take-off weight
Answer
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