DGCA Module 08 (1st Session of 2023) | Download Now

DGCA Module 08 Aerodynamics paper, 1st Session of 2023 is focused on aerodynamics, including airflow theory, lift and drag forces, stability and control, aerofoil characteristics and high-speed flight. The questions tested the basic concepts and practical understanding of aircraft behaviour.

Module 08

1st Session of 2023

1. The property of air which makes all flight possible.

A) Density

B) Pressure

C) Viscosity

2. Combination of yaw and roll.

A) Dutch roll

B) Roll

C) Pitch

3. The mass of cubic meter of air at ground level is.

A) 1.035 kg/m3

B) 1.225 kg/m3

C) 1.205 kg/m3

4. when engine failure occurs and lift is forward of the waight then.

A) Aircraft tends to stall

B) It gives position of gliding

C) Slightly reduces straight & level flight

5. Rate of climb with respect to altitude.

A) ROC increase with increase in altitude

B) ROC decrease with increase in altitude

C) ROC decrease with decrease in altitude

6. The amount of air in the atmosphere apply …. at top surface.

A) Weight

B) Force

C) Pressure

7. Reynolds number.

A) Supersonic – turbojet engine

B) Subsonic – aircraft

C) Supersonic – turboprop engine

8. If a/c laterally stable correction only takes place after … towards the a/c lower wing.

A) Skid

B) Side slip

C) Roll

9. MTCS, about centre of lift.

A) Moves forward as AOA increases

B) Moves backward as AOA increases

C) No effect

10. The … of a wing is the width of the wing from the leading edge apex to the trailinge dge.

A) Chord

B) Chord line

C) Chamber

11. The point of the intersection of the resultant force line with the… of the airfoil is called.

A) Chord

B) Resultant force

C) Chord line

12. An acroplane which flies with one wing lower than the other may often, whend isturbed from this attitude, return to it.

A) Unstable

B) Out of its proper trim

C) No effect

13. What is the things that are considered in ISA.

A) temprature, pressure, viscosity

B) temprature, pressure, density, humidity

C) temprature, viscosity, density

14. The acting vertically upwards through the CP.

A) Lift

B) Drag

C) Weight

15. Static longitudinal stability depends on.

A) The position of C.P

B) The tail plane

C) The tail plane, its area and distance from C.G

16. At constant temperature & pressure, dry air is.

A) Thin than humid air×

B) Denser than humid air

C) No effect

17. The lamination on max speed is normally provided by the one set of serious.

A) Expansion

B) Compressibility

C) Instability

18. Landing distance.

A) Final approach distance

B) Aircraft start to touchdown distance

C) Engine start to shutdown

D) All are three distance

19. In climbing thrust must also be greater than drag because it will have.

A) To support some proportion of the weight

B) To make level flight

C) Increase L/D ratio

20.

A) Above

B) Below

C) Both

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