DGCA Module 08
1st Session of 2026
1. What are the following properties considered in ISA.
A) Temperature, Pressure
B) Temperature, Pressure, Humidity, Density
C) Temperature, Pressure, Density
Answer
2. Fluid is a substance.
A) It cannot deform under an applied stress
B) It cannot resist any shear force applied to them
C) Viscosity will be the nil
Answer
3. If centre of gravity (CG) behind the centre of pressure (CP).
A) Nose down
B) Nose up
C) Remain constant
Answer
4. High Aspect ratio then.
A) Low profile drag and low induced drag
B) High profile drag and high induced drag
C) High profile drag and low induced drag
Answer
5. Stick free means.
A) Pilot releases control column and allows aileron to take place
B) Pilot releases control column and allows elevator to take place
C) Pilot holds the control column
Answer
6. Elevator control in an aircraft is used to control which axis of motion.
A) Pitch
B) Directional
C) Roll
Answer
7. Speed of sound in gas.
A) Directly proportional to temperature
B) Inversely proportional to temperature
C) No relation
Answer
8. The ratio of inertial force between the speed of an object and speed of sound.
A) Reynolds number
B) Mach number
C) Weber number
Answer
9. Damage tolerance.
A) Is minor flaw in components, corrosion and anticipates their growth
B) Include a disciplined study of crack growth
C) None
Answer
10. As AOA increases then.
A) C of P moves rearward
B) C of P moves forward
C) Remain constant
Answer
11. During gliding turn the aircraft will roll.
A) Inwards
B) Outwards
C) None
Answer
12. If pilot increase or decrease the gliding speed life drag ratio, then flight path will.
A) Flatter
B) Steeper
C) 5° to 7°
Answer
13. Thin airfoil design for.
A) Lift
B) More weight
C) High speed
Answer
14. Mark the correct statement.
A) Centre of pressure is a point on chord of wing from where drag force act
B) Centre of pressure is a point on chord of wing from where lift force act
C) Centre of pressure is a point on chord of wing from where weight force act
Answer
15. Type of stability about the lateral axis called.
A) Lateral stability
B) Directional stability
C) Longitudinal stability
Answer
16. Rate of climb is about to.
A) Vertical component of velocity
B) Horizontal component of velocity
C) Parallel component of velocity
Answer
17. What is profile drag.
A) Skin friction drag
B) Wing drag
C) Tail plane drag
Answer
18. At constant temperature and pressure humidity is increased then density.
A) Decrease
B) Increase
C) Remain constant
Answer
19. Thrust line is greater than drag.
A) Nose up
B) Nose down
C) Constant
Answer
20. During climb/glide turning.
A) Yawing
B) Pitching
C) Yawing, pitching & rolling
Answer
21. Aspect ratio.
A) Directly proportional to profile drag
B) Directly proportional to induced drag
C) Inversely proportional to induced drag
Answer
22. Steep turns when engine is powerful enough.
A) High speed and low angles of attack
B) High speed and large angles of attack
C) High speed, large angles of attack and even at stalling angle
Answer
23. Area of wing is designed primarily for what purpose.
A) Lift generation
B) Stability
C) Speed
Answer
24. The unstable CP is a ______ of the ordinary curved aerofoil.
A) Advantage
B) Disadvantage
C) Advantage and disadvantage depend on AOA
Answer
25. Leading edge flaps are used for what purpose.
A) Used to delay the airflow separation
B) Increases maximum lift
C) Both A and also called droop cuffs
Answer
26. Which type of drag is caused by the junction of wing root and fuselage sections.
A) Induced drag
B) Parasite drag
C) Interference drag
Answer
27. Delta wing has which characteristic.
A) High lift compared to high aspect ratio wing
B) Low lift compared to high aspect ratio wing
C) High lift compared to low aspect ratio wing
Answer
28. During a turn, when the horizontal lift component is more, what condition occurs.
A) Skidding, AOB is more
B) Slipping, AOB is more
C) Any one of them but AOB is less
Answer
29. Mark the correct statement regarding Critical Mach Number.
A) Critical Mach Number is the lowest Mach number at which airflow over any part of an aircraft first reaches the speed of sound (Mach 1)
B) It is the Mach number at which the entire aircraft reaches supersonic speed
C) It is the maximum Mach number before drag reduces
Answer
30. Vortex generators are used in which way.
A) Mounted on the main plane at high speed and on tail plane at lower speed
B) Vice versa
C) Both main and tail planes are fitted with vortex generators to control airflow
Answer
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