SACAA NPL Principles of Flight Practice Questions - SACAA National Pilot Licence (NPL) Principles of Flight & Technical Examination Exam - SACAA NPL Principles of Flight Practice Questions - SACAA National Pilot Licence (NPL) Principles of Flight & Technical Examination Exam

Question 1

According to Bernoulli's Principle for subsonic incompressible airflow through a Venturi, what happens to dynamic pressure and static pressure as air velocity increases?

Dynamic pressure decreases and static pressure increases. Dynamic pressure increases and static pressure decreases. Both dynamic pressure and static pressure increase. Both dynamic pressure and static pressure decrease.

Correct Answer:

Dynamic pressure increases and static pressure decreases.

Question 2

What is the primary physical phenomenon responsible for creating net lift on a cambered aerofoil in level flight?

Lower static pressure on the upper surface due to higher airflow velocity than on the lower surface. Higher static pressure on the upper surface pushing the wing upward into a vacuum. Equal pressure above and below the wing, with lift generated purely by engine thrust angle. Downward suction created by wingtip vortices pulling the airframe vertically.

Correct Answer:

Lower static pressure on the upper surface due to higher airflow velocity than on the lower surface.

Question 3

How is the Angle of Attack (AOA) of an aircraft wing defined?

The angle between the wing chord line and the longitudinal axis of the aircraft fuselage. The angle between the pitch attitude of the nose and the natural horizon. The angle between the wing chord line and the relative airflow vector. The angle between the flight path vector and the horizontal ground surface.

Correct Answer:

The angle between the wing chord line and the relative airflow vector.

Question 4

What is the key structural difference between the Angle of Incidence and the Angle of Attack?

Angle of Attack is fixed by aircraft designers, whereas Angle of Incidence changes continuously in flight. Angle of Incidence is fixed between the wing chord line and fuselage axis, whereas Angle of Attack varies dynamically with flight path and pilot input. Both angles are variable in flight and adjust automatically with airspeed. Angle of Incidence is measured relative to the wind, while Angle of Attack is measured relative to the horizon.

Correct Answer:

Angle of Incidence is fixed between the wing chord line and fuselage axis, whereas Angle of Attack varies dynamically with flight path and pilot input.

Question 5

As the Angle of Attack of a conventional cambered aerofoil is increased within its normal operating range (below stall), how does the Center of Pressure (CP) move?

The Center of Pressure moves forward along the chord line toward the leading edge. The Center of Pressure moves rearward along the chord line toward the trailing edge. The Center of Pressure remains fixed at exactly 50% chord under all conditions. The Center of Pressure shifts laterally toward the wingtips.

Correct Answer:

The Center of Pressure moves forward along the chord line toward the leading edge.

Question 1

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Prepare with the SACAA NPL Principles of Flight Practice Questions - SACAA National Pilot Licence (NPL) Principles of Flight & Technical Examination Exam practice quiz. This question bank includes 100 questions covering aircraft, aerodynamic, flight, drag, and angle. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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SACAA NPL Principles of Flight Practice Questions - SACAA National Pilot Licence (NPL) Principles of Flight & Technical Examination Exam

This practice set contains 100 questions from the matching question bank and focuses on aircraft, aerodynamic, flight, drag, and angle. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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SACAA NPL Principles of Flight Practice Questions - SACAA National Pilot Licence (NPL) Principles of Flight & Technical Examination Exam

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