Basic B1/B2 Module 8 (Aerodynamics)-MCQ Set E1-By Arianmaster
(M8.2,Level 2) 1. When an airfoil is moving through the air with a velocity V, the airspeed of airflow under the airfoil is ___.
A. more than V
B. the same as V
C. less than V
(M8.2,Level 2) 2. What is the displacement of airflow separation point above an airfoil by increasing the angel of attack?
A. It moves forward.
B. It remains fixed.
C. It moves aft.
(M8.2,Level 2) 3. When a slotted flap extends, which process assists the lift generation?
A. Increasing airspeed + moving separation point forward
B. Increasing angle of attack + delaying the flow separation
C. Increasing chord length + magnifying flow separation
(M8.2,Level 2) 4. In a symmetric airfoil, at zero angle of attack the lift coefficient is ____.
A. positive
B. zero
C. negative
(M8.3,Level 2) 5. When an airplane is flying steadily, what are the balance relationships between Weight (W), Thrust (T), Lift (L) and Drag (D)?
A. L=D , W=T
B. L=T , D=W
C. L=W , D=T
(M8.3,Level 2) 6. During a turn, the Load Factor ____.
A. decreases
B. remains fixed
C. increases
(M8.2,Level 2) 7. Which type of flap increases the area of the wing?
A. Fowler flap
B. Split flap
C. slotted flap
(M8.4,Level 2) 8. For an aircraft statically stable, a disturbance ____.
A. has a tendency to increase
B. will be damped after a long time
C. tends to be damped
(M8.3,Level 2) 9. Stalling speed is directly related to ____.
A. density
B. weight
C. maximum lift coefficient
(M8.2,Level 2) 10. What is the main advantage of swept wings?
A. decrease the drag at speeds close to speed of sound
B. start of stall from the wing root
C. increase the lift at high speeds