M8 Basic Aerodynamics Sub-Module No 2(Quiz No :1)

8.2 Aerodynamics

Quiz

 

1. Bernoulli’s principle states that when a fluid (air) flowing through a tube reaches a constriction, or narrowing, of the tube, the speed of the fluid flowing through that constriction -------and its pressure ---------?
   1.   increases, decreases
   2.   decreases, increases
   3.   increases, remains constant
2. lift can be increased by ?
   1.   increasing the angle of attack, wing area, velocity, density of the air
   2.   changing the shape or size of the airfoil
   3.   Both are Correct
3. Angle of incidence is the angle between the chord line of the wing and ?
   1.   the longitudinal axis of the aircraft
   2.   the lateral axis of the aircraft
   3.   the vertical axis of the aircraft
4. Which of the following forces act on an aircraft in level flight ?
   1.   Lift, drag, thrust
   2.   Lift, thrust, and weight
   3.   Lift, thrust, weight, and drag
5. The CP moves ______ with increasing AOA and _______ as the AOA decreases ?
   1.   Rearward, Forward
   2.   Forward, Rearward
   3.   Remains Constant
6. The take off lift coefficient will be value ?
   1.   from 5 to 25 percent at CL max%
   2.   from 5 to 10 percent at CL max %
   3.   from 90 to 65 percent at CL max %
7. Ice commonly changes the shape of the ?
   1.   airfoil
   2.   boundary layer
   3.   chord
8. As air flows over the upper cambered surface of an aerofoil, what happens with velocity and pressure ?
   1.   Velocity increases, pressure increases
   2.   Velocity increases, pressure decreases
   3.   Velocity decreases, pressure decreases
9. The point of intersection of the resultant force line with the chord line of the airfoil is called the ?
   1.   center of gravity(CG)
   2.   angle of attack (AOA
   3.   center of pressure (CP)
10. A high aspect ratio wing will give ?
    1.   low profile and low induced drag
    2.   high profile and low induced drag
    3.   low profile and high induced drag