# Principles Of Flight Quiz: Trivia!

35 Questions | Total Attempts: 1524  Settings  What do you know about the principles of flight? As far as this quiz is concerned, you must know about the use of flaps during level turns, the rectangular wing’s job or task compared to other wing platforms, what the wing directly controls, and what affects the speed of an airplane. This quiz will demonstrate your knowledge of the principles of flight. Good luck with the quiz.

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

The lowering of flaps increases the stall speed

• B.

The raising of flaps increases the stall speed

• C.

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

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

Wingtip, with the stall progression toward the wing root

• B.

Wing root, with the stall progression toward the wingtip

• C.

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

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

Angle of incidence of the wing

• B.

Amount of airflow above and below the wing

• C.

Distribution of pressures acting on the wing

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

Lift, airspeed, and drag

• B.

Lift, airspeed and CG

• C.

Lift and airspeed, but not drag

• 5.
The angle of attack at which a wing stalls remains constant regardless of:
• A.

Weight, dynamic pressure, bank angle, or pitch attitude

• B.

Dynamic pressure, but varies with weight, bank angle, and pitch attitude

• C.

Weight and pitch attitude, but varies with dynamic pressure and bank angle

• 6.
Stall speed is affected by:
• A.

• B.

Load factor, angle of attack, and power

• C.

Angle of attack, weight, and air density

• 7.
An airplane will stall at the same:
• A.

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

• B.

Airspeed regardless of the attitude with relation to the horizon

• C.

Angle of attack and attitude with relation to the horizon

• 8.
The stalling speed of an airplane is most affected by:
• A.

Changes in air density

• B.

Variations in flight altitude

• C.

• 9.
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 increase drag

• C.

An increase in angle of attack will decrease pressure below the wing and increase drag

• 10.
Which is true regarding the forces acting on an aircraft in a steady-state descent? The sum of all:
• A.

Upward forces is less than the sum of all downward forces

• B.

Rearward forces is greater than the sum of all forward forces

• C.

Forward forces is equal to the sum of all rearward forces

• 11.
During the transition from straight-and-level flight to a climb, the angle of attack is increased and lift:
• A.

Is momentarily decreased

• B.

Remains the same

• C.

Is momentarily increased

• 12.
Which is true regarding the force of lift in steady, unaccelerated flight?
• A.

At lower airspeeds the angle of attack must be less to generate sufficient lift to maintain altitude

• B.

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

• C.

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

• 13.
In theory, if the airspeed of an airplane is doubled while in level flight, parasite drag will become:
• A.

Twice as great

• B.

Half as great

• C.

Four times greater

• 14.
As airspeed decreases in level flight below that speed for maximum lift/drag ratio, total drag of an airplane.
• A.

Decreases because of lower parasite drag

• B.

Increases because of increased induced drag

• C.

Increases because of increased parasite drag

• 15.
What performance is characteristic of flight at maximum lift/drag ratio in a propeller-driven airplane? Maximum:
• A.

Gain in altitude over a given distance

• B.

Range and maximum distance glide

• C.

Coefficient of lift and maximum coefficient of drag

• 16.
In theory, if the angle of attack and other factors remain constant and the airspeed is doubled, the lift produced at the higher speed will be:
• A.

The same as at the lower airspeed

• B.

Two times greater than at the lower speed

• C.

Four times greater than at the lower speed

• 17.
An aircraft wing is designed to produce lift resulting from a difference in the:
• A.

Negative air pressure below and a vacuum above the wing’s surface

• B.

Vacuum below the wing’s surface and greater air pressure above the wing’s surface

• C.

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

• 18.
Lift on a wing is most properly defined as the:
• A.

Force acting perpendicular to the relative wind

• B.

Differential pressure acting perpendicular to the chord of the wing

• C.

Reduced pressure resulting from a laminar flow over the upper camber of an airfoil, which acts perpendicular to the mean camber

• 19.
On a wing, the force of lift acts perpendicular to and the force of drags acts parallel to the:
• A.

Chord line

• B.

Flightpath

• C.

Longitudinal axis

• 20.
Which statement is true regarding the opposing forces acting on an airplane is the steady-state level flight?
• A.

These forces are equal

• B.

Thrust is greater than drag and weight and lift are equal

• C.

Thrust is greater than drag and lift is greater than weight

• 21.
An airplane leaving ground effect will:
• A.

Experience a reduction in ground friction and requires a slight power reduction

• B.

Experience an increase in induced drag and required more thrust

• C.

Requires a lower angle of attack to maintain the same lift coefficient

• 22.
To produce the same lift while in ground effect as when out of ground effect, the airplane requires:
• A.

A lower angle of attack

• B.

The same angle of attack

• C.

A greater angle of attack

• 23.
If the same angle of attack is maintained in ground effect as when out of ground effect, lift will
• A.

Increase, and induced drag will decrease

• B.

Decrease, and parasite drag will increase

• C.

Increase, and induced drag will increase

• 24.
Longitudinal stability involves the motion of the airplane controlled by its:
• A.

Rudder

• B.

Elevator

• C.

Ailerons

• 25.
If airspeed is increased during a level turn, what action would be necessary to maintain altitude? The angle of attack
• A.

And angle of bank must be decreased

• B.

Must be increased or angle of bank decreased

• C.

Must be decreased or angle of bank increased

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