More Aerodynamics and Basics Quiz # 7

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1.	The four forces acting on an airplane are

	A. lift, weight, thrust, and drag.
	B. lift weight, gravity, and thrust.
	C. lift, gravity, power, and friction

2.	The Angle of attack is defined as the angle between the chord line and the

	A. direction of the relative wind.
	B. pitch angle of an airfoil.
	C. rotor plane of rotation.

3.	During a spin to the left, which wing(s) is/are stalled?

	A. Both wings are stalled.
	B. Neither wing is stalled.
	C. Only the left wing is stalled.

4.	What force makes an airplane turn?

	A. The horizontal component of lift.
	B. The vertical component of lift.
	C. Centrifugal force.

5.	What determines the longitudinal stability of an airplane?

	A. The location of the CG with respect to the center of lift.
	B. The effectiveness of the horizontal stabilizer, rudder, and rudder trim tab.
	C. The relationship of thrust and lift to weight and drag.

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