M-8 Basic Aerodynamics Final Practice Test [20 Question and 25 Minutes]

Module 08. Basic Aerodynamics

Final Practice Test

  

 

1. If gauge pressure on a standard day at sea level is 25 PSI, the absolute pressure is ?
   1.   39.7 PSI
   2.   10.3 PSI
   3.   43.8 PSI
2. What is sea level pressure?
   1.   1012.3 mb
   2.   1013.2 mb
   3.   1032.2 mb
3. How does IAS at the point of stall vary with height?
   1.   It decreases
   2.   It is practically constant
   3.   It increases
4. As altitude increases, pressure ?
   1.   decreases exponentially
   2.   decreases at constant rate
   3.   increases exponentially
5. Wing tip vortices are strongest when ?
   1.   flying high speed straight and level flight
   2.   flying into a headwind
   3.   flying slowly at high angles of attack
6. Elevons combine the functions of both ?
   1.   rudder and elevator
   2.   elevator and aileron
   3.   rudder and aileron
7. When the trailing edge flaps are lowered, the aircraft will ?
   1.   pitch nose up
   2.   pitch nose down
   3.   sink
8. The aircraft is controlled about the lateral axis by the ?
   1.   ailerons
   2.   elevator
   3.   rudder
9. As height increases, with angle of attack and speed constant ?
   1.   lift will remain constant
   2.   lift Increases
   3.   lift decreases
10. A 'slug' is a unit of ?
    1.   mass
    2.   density
    3.   volume
11. A yawing motion provides what kind of Stability?
    1.   Directional
    2.   Lateral
    3.   Longitudinal
12. Azimuth stability is dependent on ?
    1.   dihedral
    2.   keel and fin
    3.   tailplane
13. An elevator trim tab is used to ?
    1.   counteract propeller torque
    2.   prevent the control surface from stalling the airflow
    3.   reduce control column forces on the pilot
14. The fin gives stability about which axis?
    1.   Longitudinal axis
    2.   Lateral axis
    3.   Normal axis
15. Dutch Roll is ?
    1.   primarily a pitching instability
    2.   a combined rolling and yawing motion
    3.   a type of slow roll
16. Dihedral wings combat instability in ?
    1.   yaw
    2.   side-slip
    3.   pitch
17. Over pitch causes ?
    1.   an increase in RPM
    2.   a reduction in RPM
    3.   blades to cone up
18. When an aerofoil stalls ?
    1.   lift and drag increase
    2.   lift decreases and drag increases
    3.   lift increases and drag decreases
19. Lift in a helicopter is a result of ?
    1.   pitch * square root of speed
    2.   angle of attack * velocity squared
    3.   angle of attack * velocity squared and forward speed
20. Tail rotor effects the helicopter in ?
    1.   pitch and roll
    2.   vertical axis
    3.   horizontal axis