Module 8 Questions and Answers | Set 1

1. Density of air at sea level is
   A. 1.035 kg/m³ B. 1.225 kg/m³ C. 1.205 kg/m³
2. The drag inversely proportional to square of velocity is
   A. Parasite drag B. Induced drag C. Infinite drag
3. Aileron provides
   A. Pitch control B. Roll control C. Yaw control
4. Boundary layer is
   A. Slow moving air near surface B. Fast air near wing C. Air above wing

5. Efficiency of airfoil
   A. Lift/Drag B. Drag/Lift C. Weight/Thrust
6. Induced drag is part of
   A. Lift B. Weight C. Thrust
7. For equilibrium flight
   A. L=W B. T=D C. Both
8. Weight of aircraft acts through
   A. Center of gravity B. Center of pressure C. Aerodynamic center
9. Propeller converts
   A. Torque to thrust B. Thrust to torque C. Power to drag
10. Service ceiling occurs when ROC becomes
    A. <0.5 m/s B. >0.5 m/s C. Constant
11. Directional control provided by
    A. Rudder B. Elevator C. Aileron
12. Nose-to-tail axis is
    A. Longitudinal B. Lateral C. Vertical
13. Dutch roll is
    A. Yaw only B. Roll only C. Yaw and roll
14. Mass balancing reduces
    A. Drag B. Flutter C. Lift
15. Center of pressure movement depends on
    A. Angle of attack B. Drag C. Weight
16. Drag due to boundary layer separation
    A. Form drag B. Induced drag C. Wave drag
17. Ideal airfoil has
    A. High CL B. Good L/D C. Both
18. Laminar to turbulent point
    A. Transition point B. Stall point C. Critical point
19. Smooth surface encourages
    A. Laminar flow B. Turbulent flow C. Separation
20. Purpose of slats
    A. Increase drag B. Re■energize boundary layer C. Decrease lift

ANSWER

Answer Key: 1-B 2-B 3-B 4-A 5-A 6-A 7-C 8-A 9-A 10-A 11-A 12-A 13-C 14-B 15-A 16-A 17-C
18-A 19-A 20-B