Drag, thrust, and forces on aircraft MCQs – Aerospace

1. Which force opposes the motion of an aircraft through the air?
(A) Thrust
(B) Drag
(C) Lift
(D) Weight

2. The force that moves an aircraft forward through the air is called:
(A) Drag
(B) Lift
(C) Thrust
(D) Weight

3. What type of drag is caused by the shape and surface roughness of an aircraft?
(A) Induced drag
(B) Parasitic drag
(C) Wave drag
(D) Profile drag

4. Which component of drag increases as the square of velocity?
(A) Induced drag
(B) Wave drag
(C) Parasitic drag
(D) Ground effect drag

5. The lift-to-drag ratio of an aircraft is a measure of:
(A) Engine efficiency
(B) Glide performance
(C) Weight distribution
(D) Stall speed

6. Which type of thrust is generated by jet engines?
(A) Propulsive thrust
(B) Aerodynamic thrust
(C) Internal thrust
(D) Reactive thrust

7. Induced drag is a byproduct of:
(A) Thrust
(B) Lift
(C) Weight
(D) Speed

8. What happens to induced drag as the speed of an aircraft increases?
(A) Increases
(B) Decreases
(C) Remains constant
(D) Doubles

9. If an aircraft is in straight and level flight at constant velocity, the thrust must be equal to:
(A) Lift
(B) Drag
(C) Weight
(D) Angle of attack

10. Which aerodynamic force acts perpendicular to the relative wind?
(A) Lift
(B) Drag
(C) Thrust
(D) Friction