ATPL - PRINCIPLES OF FLIGHT TEST QUESTIONS AND ANSWERS FULLY SOLVED
1. Which statement is true regarding the opposing forces acting on an aeroplane in steady-state level
flight?
a. Thrust is greater than drag and weight and lift are equal
b. These forces are equal
c. Thrust is greater than drag and lift is greater than weight
d. Thrust is slightly greater than lift, but the drag and weight are equal - Answers b. These forces are
equal
2. The stalling speed of an aeroplane is most affected by:
a. Changes in air density
b. Variations in aeroplane loading
c. Variations in flight altitude
d. Changes in pitch attitude - Answers b. Variations in aeroplane loading
3. To ensure some degree of longitudinal stability in flight, the position of the CG:
a. Must always coincide with the AC
b. Must be forward of the Neutral Point
c. Must be aft of the Neutral Point
d. Must not be forward of the aft CG limit - Answers b. Must be forward of the Neutral Point
4. The purpose of a trim tab is:
a. To assist the pilot in initiating movement of the controls
b. To zero the load on the pilot controls in the flight attitude required
c. To provide feel to the controls at high speed
, d. To increase the effectiveness of the controls - Answers b. To zero the load on the pilot controls in the
flight attitude required
5. What criteria determine which engine is the "critical" engine of a twin-engine aeroplane?
a. The one with the center of thrust farthest from the centreline of the fuselage
b. The one with the center of thrust closest to the centreline of the fuselage
c. The one designated by the manufacturer which develops most usable thrust
d. The failure of which causes the least yawing moment - Answers b. The one with the center of thrust
closest to the centreline of the fuselage
6. The angle of attack of a fixed pitch propeller:
a. Depends on forward speed only
b. Depends on forward speed and engine rotational speed
c. Depends on engine rotational speed only
d. Is constant for a fixed pitch propeller - Answers b. Depends on forward speed and engine rotational
speed
7. Which statement is true relative to changing angle of attack?
a. A decrease in angle of attack will increase pressure below the wing and decrease drag
b. An increase in angle of attack will decrease pressure below the wing and decrease drag
c. An increase in angle of attack will increase drag
d. An increase in angle of attack will decrease the lift coefficient - Answers c. An increase in angle of
attack will increase drag
8. If the angle of attack is increased beyond the critical angle of attack, the wing will no longer produce
sufficient lift to support the weight of the aircraft:
a. Unless the airspeed is greater than the normal stall speed
1. Which statement is true regarding the opposing forces acting on an aeroplane in steady-state level
flight?
a. Thrust is greater than drag and weight and lift are equal
b. These forces are equal
c. Thrust is greater than drag and lift is greater than weight
d. Thrust is slightly greater than lift, but the drag and weight are equal - Answers b. These forces are
equal
2. The stalling speed of an aeroplane is most affected by:
a. Changes in air density
b. Variations in aeroplane loading
c. Variations in flight altitude
d. Changes in pitch attitude - Answers b. Variations in aeroplane loading
3. To ensure some degree of longitudinal stability in flight, the position of the CG:
a. Must always coincide with the AC
b. Must be forward of the Neutral Point
c. Must be aft of the Neutral Point
d. Must not be forward of the aft CG limit - Answers b. Must be forward of the Neutral Point
4. The purpose of a trim tab is:
a. To assist the pilot in initiating movement of the controls
b. To zero the load on the pilot controls in the flight attitude required
c. To provide feel to the controls at high speed
, d. To increase the effectiveness of the controls - Answers b. To zero the load on the pilot controls in the
flight attitude required
5. What criteria determine which engine is the "critical" engine of a twin-engine aeroplane?
a. The one with the center of thrust farthest from the centreline of the fuselage
b. The one with the center of thrust closest to the centreline of the fuselage
c. The one designated by the manufacturer which develops most usable thrust
d. The failure of which causes the least yawing moment - Answers b. The one with the center of thrust
closest to the centreline of the fuselage
6. The angle of attack of a fixed pitch propeller:
a. Depends on forward speed only
b. Depends on forward speed and engine rotational speed
c. Depends on engine rotational speed only
d. Is constant for a fixed pitch propeller - Answers b. Depends on forward speed and engine rotational
speed
7. Which statement is true relative to changing angle of attack?
a. A decrease in angle of attack will increase pressure below the wing and decrease drag
b. An increase in angle of attack will decrease pressure below the wing and decrease drag
c. An increase in angle of attack will increase drag
d. An increase in angle of attack will decrease the lift coefficient - Answers c. An increase in angle of
attack will increase drag
8. If the angle of attack is increased beyond the critical angle of attack, the wing will no longer produce
sufficient lift to support the weight of the aircraft:
a. Unless the airspeed is greater than the normal stall speed
