PPL – PRINCIPLES OF FLIGHT

Question 1

1. As altitude increases, the indicated airspeed at which a given airplane stalls in a particular configuration will:

remain the same regardless of altitude.

decrease as the true airspeed decreases.

decrease as the airspeed increases.

Answer 1

remain the same regardless of altitude.

Question 2

2. An airplane will stall at the same:

angle of attack regardless of the altitude with relation to the horizon

airspeed regardless of the altitude with relation to the horizon

angle of attack and altitude with relation to the horizon

Answer 2

angle of attack regardless of the altitude with relation to the horizon

Question 3

3. A turn coordinator provides an indicator of the:

Angle of bank up to but not exceeding 30°.

Attitude of the aircraft with reference to the longitudinal axis.

Movement of the aircraft about the yaw and roll axes.

Answer 3

Movement of the aircraft about the yaw and roll axes.

Question 4

4. How should a pilot determine the direction of bank from an attitude indicator as the one illustrated?

By the direction of deflection of the banking scale (A).

By the relationship of the miniature airplane © to the deflected horizon
bar (B)

By the direction of deflection of the horizon bar (B).

Answer 4

By the relationship of the miniature airplane © to the deflected horizon
bar (B)

Question 5

5. The most important rule to remember in the event of a power failure after becoming airborne is to:

quickly check the fuel supply for possible fuel axhaustion.

determine the wind direction to plan for the forced landing

immediately establish the proper gliding attitude and airspeed

Answer 5

immediately establish the proper gliding attitude and airspeed.

Question 6

6. What force makes an airplane turn?

The vertical component of lift.

Centrifugal force.

The horizontal component of lift.

Answer 6

The horizontal component of lift.

Question 7

7. What does P-factor cause the airplane to yaw to the left?

When at high angles of attack.

When at low angles of attack.

When at high airspeeds.

Answer 7

When at high angles of attack.

Question 8

8. Which basic flight maneuver increases the load factor on an airplane as compared to straight-and-level flight?

Turns

Climbs

Stalls

Answer 8

Turns

Question 9

9. One of the main functions of flaps during approach and landing is to:

decrease the angle of descent without increasing the airspeed.

increase the angle of descent without increasing the airspeed.

permit a touchdown at a higher
indicated airspeed.

Answer 9

increase the angle of descent without increasing the airspeed.

Question 10

10. The wind condition that requires maximum caution when avoiding wake turbulence on landing is a:

light, quartering headwind.

light, quartering tailwind.

strong headwind.

Answer 10

light, quartering tailwind.

Question 11

11. When landing behind a large aircraft, the pilot should avoid wake turbulence by staying?

Above the large aircraft’s final approach path and landing beyond the large aircraft’s touchdown point.

Below the large aircraft’s final approach path and landing before
aircraft’s touchdown point.

Above the large aircraft’s final approach path and landing before the large aircraft’s touchdown point

Answer 11

Below the large aircraft’s final approach path and landing before
aircraft’s touchdown point.

Question 12

12. The stalling speed of an airplane is most affected by:

changes in air density

variations in flight altitude

variations in airplane loading

Answer 12

variations in airplane loading

Question 13

13. During the Transition from straight-and-level flight to a climb, the angle of attack is increased and lift:

is momentarily decreased

remains the same

is momentarily increased

Answer 13

is momentarily increased

Question 14

14. In theory, if the airspeed of an airplane is doubled while in level flight, parasite drag will become:

twice as great

half as great

four times greater

Answer 14

four times greater

Question 15

15. Stall speed is affected by:

weight, load factor, and power

load factor, angle of attack, and power

angle of attack, weight, and air density

Answer 15

weight, load factor, and power

Question 16

16. Airplane wing load during a level coordinated turn in smooth air depends upon the:

rate of turn

angle of bank

true airspeed

Answer 16

angle of bank

Question 17

17. To produce the same lift while in ground effect as when out of ground effect, the airplane requires:

a lower angle of attack

the same angle of attack

a greater angle of attack

Answer 17

a lower angle of attack

Question 18

18. If airspeed is increased during a level turn, what action would be necessary to maintain altitude? The angle of attack:

and angle of bank must be decreased

must be increased or angle of bank decreased

must be decreased or angle of bank increased

Answer 18

must be decreased or angle of bank increased

Question 19

19. If a standard rate turn is maintained, how long would it take to turn 360°?

1 minute

2 minutes

3 minutes

Answer 19

2 minutes

Question 20

20. To increase the rate of turn at the same time decrease the radius, a pilot should:

maintain the bank and decreased airspeed

increase the bank and increase airspeed

increase the bank and decrease airspeed

Answer 20

increase the bank and decrease airspeed

Question 21

1. Which is true regarding the use of flaps during level turns?

The lowering of flaps increases the stall speed

The raising of flaps increases the stall speed

Raising flaps will require added forward pressure on the yoke or
stick

Answer 21

The raising of flaps increases the stall speed

Question 22

2. A rectangular wing, as compared to other wing platforms, has a tendency to stall first at the:

Wingtip, with the stall progression toward the wing root

Wing root, with the stall progression toward the wingtip

Center trailing edge, with the stall progression outward toward the wing root and tip

Answer 22

Wing root, with the stall progression toward the wingtip

Question 23

3. The angle of attack of a wing directly controls the:

Angle of incidence of the wing

Amount of airflow above and below the wing

Distribution of pressures acting on the wing

Answer 23

Distribution of pressures acting on the wing

Question 24

4. By changing the angle of attack of a wing, a pilot can control the airplane’s:

Lift, airspeed, and drag

Lift, airspeed and CG

Lift and airspeed, but not drag

Answer 24

Lift, airspeed, and dragV

Question 25

5. The angle of attack at which a wing stalls remains constant regardless of: Weight, dynamic pressure, bank angle, or pitch attitude Dynamic pressure, but varies with weight, bank angle, and pitch attitude Weight and pitch attitude, but varies with dynamic pressure and bank angle

Answer 25

Weight, dynamic pressure, bank angle, or pitch attitude

Question 26

6. Stall speed is affected by: Weight, load factor, and power Load factor, angle of attack, and power Angle of attack, weight, and air density

Answer 26

Weight, load factor, and power

Question 27

7. An airplane will stall at the same: Angle of attack regardless of the attitude with relation to the horizon Airspeed regardless of the attitude with relation to the horizon Angle of attack and attitude with relation to the horizon

Answer 27

Angle of attack regardless of the attitude with relation to the horizon

Question 28

8. The stalling speed of an airplane is most affected by: Changes in air density Variations in flight altitude Variations in airplane loading

Answer 28

Variations in airplane loading

Question 29

9. Which statement is true relative to changing angle of attack? A decrease in angle of attack will increase pressure below the wing and decrease drag An increase in angle of attack will increase drag An increase in angle of attack will decrease pressure below the wing and increase drag

Answer 29

An increase in angle of attack will increase drag

Question 30

10. Which is true regarding the forces acting on an aircraft in a steady-state descent? The sum of all: Upward forces is less than the sum of all downward forces Rearward forces is greater than the sum of all forward forces Forward forces is equal to the sum of all rearward forces

Answer 30

Forward forces is equal to the sum of all rearward forces

Question 31

11. During the transition from straight-and-level flight to a climb, the angle of attack is increased and lift: Is momentarily decreased Remains the same Is momentarily increased

Answer 31

Is momentarily increased

Question 32

12. Which is true regarding the force of lift in steady, unaccelerated flight? At lower airspeeds the angle of attack must be less to generate sufficient lift to maintain altitude There is a corresponding indicated airspeed required for every angle of attack to generate sufficient lift to maintain altitude An airfoil will always stall at the same indicated airspeed; therefore, an increase in weight will require an increase in speed to generate sufficient lift to maintain altitude

Answer 32

There is a corresponding indicated airspeed required for every angle of attack to generate sufficient lift to maintain altitude

Question 33

13. In theory, if the airspeed of an airplane is doubled while in level flight, parasite drag will become: Twice as great Half as great Four times greater

Answer 33

Four times greater

Question 34

14. As airspeed decreases in level flight below that speed for maximum lift/drag ratio, total drag of an airplane Decreases because of lower parasite drag Increases because of increased induced drag Increases because of increased parasite drag

Answer 34

Increases because of increased induced drag

Question 35

15. What performance is characteristic of flight at maximum lift/drag ratio in a propeller-driven airplane? Maximum: Gain in altitude over a given distance Range and maximum distance glide Coefficient of lift and maximum coefficient of drag

Answer 35

Range and maximum distance glide

Question 36

17. An aircraft wing is designed to produce lift resulting from a difference in the: Negative air pressure below and a vacuum above the wing’s surface Vacuum below the wing’s surface and greater air pressure above the wing’s surface Higher air pressure below the wing’s surface and lower air pressure above the wing’s surface

Answer 36

Higher air pressure below the wing’s surface and lower air pressure above the wing’s surface

Question 37

18. Lift on a wing is most properly defined as the: Force acting perpendicular to the relative wind Differential pressure acting perpendicular to the chord of the wing Reduced pressure resulting from a laminar flow over the upper camber of an airfoil, which acts perpendicular to the mean camber

Answer 37

Force acting perpendicular to the relative wind

Question 38

19. On a wing, the force of lift acts perpendicular to and the force of drags acts parallel to the: Chord line Flightpath Longitudinal axis

Answer 38

Flightpath

Question 39

20. Which statement is true regarding the opposing forces acting on an airplane is steady-state level flight? These forces are equal Thrust is greater than drag and weight and lift are equal Thrust is greater than drag and lift is greater than weight

Answer 39

These forces are equal

Question 40

21. An airplane leaving ground effect will: Experience a reduction in ground friction and requires a slight power reduction Experience an increase in induced drag and required more thrust Requires a lower angle of attack to maintain the same lift coefficient

Answer 40

Experience an increase in induced drag and required more thrust

Question 41

22. To produce the same lift while in ground effect as when out of ground effect, the airplane requires: A lower angle of attack The same angle of attack A greater angle of attack

Answer 41

A lower angle of attack

Question 42

23. If the same angle of attack is maintained in ground effect as when out of ground effect, lift will Increase, and induced drag will decrease Decrease, and parasite drag will increase Increase, and induced drag will increase

Answer 42

Increase, and induced drag will decrease

Question 43

25. If airspeed is increased during a level turn, what action would be necessary to maintain altitude? The angle of attack And angle of bank must be decreased Must be increased or angle of bank decreased Must be decreased or angle of bank increased

Answer 43

Must be decreased or angle of bank increased

Question 44

26. Why is it necessary to increase back elevator pressure to maintain altitude during a turn? To compensate for the: Loss of the vertical component of lift Loss of the horizontal component of lift and the increase in centrifugal force Rudder deflection and slight opposite aileron throughout the turn

Answer 44

Loss of the vertical component of lift

Question 45

27. To maintain altitude during a turn, the angle of attack must be increased to compensate for the decrease in the Forces opposing the resultant component of drag Vertical component of lift Horizontal component of lift

Answer 45

Vertical component of lift

Question 46

28. The ratio between the total airload imposed on the wing and the gross weight of an aircraft in fight is known as: Load factor and directly affects stall speed Aspect load and directly affects stall speed Load factor and has no relation with stall speed

Answer 46

Load factor and directly affects stall speed

Question 47

30. For a given angle of bank, in any airplane, the load factor imposed in a coordinated constant-altitude turn: Is constant and the stall speed increases Varies with the rate of turn Is constant and the stall speed decreases

Answer 47

Is constant and the stall speed increases

Question 48

34. Accelerating past critical Mach may result in the onset of compressibility effects such as High speed stalls P factor Control difficulties

Answer 48

Control difficulties

Question 49

35. To develop maximum power and thrust, a constant-speed propeller should be set to a blade angle that will produce a: Large angle of attack and low RPM Small angle of attack and high RPM Large angle of attack and high RPM

Answer 49

Small angle of attack and high RPM