Question 1

Which of the following is true about the Bernoulli's principle?

Accepted Answer

The pressure of a fluid decreases as its velocity increases.

Answer

The pressure of a fluid remains constant regardless of its velocity.

Answer

The pressure of a fluid increases as its velocity increases.

Answer

The pressure of a fluid is unrelated to its velocity.

Question 2

What is the definition of angle of attack?

Accepted Answer

The angle between the chord line of an airfoil and the oncoming airflow.

Answer

The angle between the horizontal stabilizer and the oncoming airflow.

Answer

The angle between the trailing edge of an airfoil and the oncoming airflow.

Answer

The angle between the leading edge of an airfoil and the oncoming airflow.

Question 3

What is the purpose of the winglets on an aircraft?

Accepted Answer

To reduce drag and improve fuel efficiency.

Answer

To enhance maneuverability and control.

Answer

To provide additional storage space.

Answer

To increase lift and generate more thrust.

Question 4

What is the purpose of the trailing edge flaps on an aircraft wing?

Accepted Answer

To increase lift and decrease stall speed.

Answer

To decrease lift and increase stall speed.

Answer

To control the aircraft's roll during maneuvers.

Answer

To reduce drag and increase cruise speed.

Question 5

What is the definition of stall in aerodynamics?

Accepted Answer

A sudden reduction in lift caused by exceeding the critical angle of attack.

Answer

A rapid ascent of an aircraft during takeoff.

Answer

A sudden increase in lift caused by decreasing the angle of attack.

Answer

A loss of control caused by excessive speed.

Question 6

What is the purpose of the ailerons on an aircraft?

Accepted Answer

To control the roll or banking motion of the aircraft.

Answer

To control the yaw or side-to-side motion of the aircraft.

Answer

To control the pitch or up and down motion of the aircraft.

Answer

To control the descent rate of the aircraft.

Question 7

What is the purpose of the elevator on an aircraft?

Accepted Answer

To control the pitch or up and down motion of the aircraft.

Answer

To control the yaw or side-to-side motion of the aircraft.

Answer

To control the descent rate of the aircraft.

Answer

To control the roll or banking motion of the aircraft.

Question 8

What is the definition of center of gravity (CG) in aircraft design?

Accepted Answer

The point at which the aircraft would balance if it were suspended in the air.

Answer

The point where the engines are located on the aircraft.

Answer

The point where the pilot and passengers are seated in the aircraft.

Answer

The point of maximum lift on the aircraft wing.

Question 9

What is the purpose of an airfoil?

Accepted Answer

To generate lift

Answer

To reduce drag

Answer

To control roll

Answer

To increase drag

Question 10

What is the center of pressure on an airfoil?

Accepted Answer

The point where the total aerodynamic force is considered to act

Answer

The point where the airfoil is thickest

Answer

The point where drag is minimized

Question 11

What is the coefficient of lift?

Accepted Answer

A dimensionless value representing the lift generated by an airfoil

Answer

The weight of the aircraft

Answer

The surface area of the wing

Question 12

What is the purpose of a wing's camber?

Accepted Answer

To generate lift

Answer

To increase drag

Answer

To control roll

Answer

To reduce drag

Question 13

What is the stall speed of an aircraft?

Accepted Answer

The minimum speed at which the aircraft can maintain controlled flight

Answer

The speed at which the aircraft takes off

Answer

The speed at which the aircraft is cruising

Question 14

What is the purpose of a wind tunnel?

Accepted Answer

To test aerodynamic properties of models and prototypes

Answer

To control air traffic

Answer

To simulate flying in adverse weather conditions

Question 15

What is the primary function of a horizontal stabilizer on an aircraft?

Accepted Answer

To provide stability and control in pitch

Answer

To provide stability and control in yaw

Answer

To provide stability and control in roll

Question 16

What is the angle of attack?

Accepted Answer

The angle between the wing's chord line and the direction of the oncoming airflow

Answer

The angle between the wing's root and tip

Answer

The angle between the wing's trailing edge and the ground

Answer

The angle between the wing's leading edge and the ground

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