3PK Prototype Professional Pilot
Knowledge Exam
Question 1. What are the four fundamental forces of flight that
determine an aircraft’s behavior in flight?
A) Lift, Weight, Thrust, Drag
B) Gravity, Magnetism, Buoyancy, Friction
C) Pressure, Velocity, Density, Temperature
D) Power, Resistance, Inertia, Momentum
Answer: A
Explanation: The four fundamental forces of flight are Lift, Weight,
Thrust, and Drag, which govern the aircraft’s ability to sustain flight,
accelerate, and maneuver.
Question 2. Bernoulli's Principle explains which aspect of lift
generation?
,3PK Prototype Professional Pilot
Knowledge Exam
A) Pressure differential above and below the airfoil
B) Newton’s third law of motion
C) Viscous forces acting on the airfoil
D) The angle of attack effects
Answer: A
Explanation: Bernoulli's Principle states that faster airflow over the top
of an airfoil results in lower pressure, creating a pressure differential
that produces lift.
Question 3. Which of the following best describes the Venturi effect?
A) Reduction in fluid pressure when flowing through a constricted
section
B) Increase in temperature with increased speed
,3PK Prototype Professional Pilot
Knowledge Exam
C) The effect of gravity on fluid flow
D) The increase in pressure at the stagnation point
Answer: A
Explanation: The Venturi effect describes how fluid pressure decreases
when flowing through a constricted passage, which contributes to lift in
aerodynamics.
Question 4. Development of lift is primarily explained by which two
principles?
A) Newton's laws and pressure differential
B) Bernoulli's principle and Venturi effect
C) Conservation of energy and entropy
D) Viscous forces and surface tension
, 3PK Prototype Professional Pilot
Knowledge Exam
Answer: A
Explanation: Lift development can be explained through Newton's laws
(action-reaction) and the pressure differential created by airflow over
the wing.
Question 5. What is the critical angle of attack?
A) The angle at which lift is maximized
B) The angle at which stall occurs
C) The maximum angle of attack before airflow separates
D) The angle at which drag is minimized
Answer: C
Explanation: The critical angle of attack is the angle at which airflow
separates from the airfoil surface, leading to a stall.
Knowledge Exam
Question 1. What are the four fundamental forces of flight that
determine an aircraft’s behavior in flight?
A) Lift, Weight, Thrust, Drag
B) Gravity, Magnetism, Buoyancy, Friction
C) Pressure, Velocity, Density, Temperature
D) Power, Resistance, Inertia, Momentum
Answer: A
Explanation: The four fundamental forces of flight are Lift, Weight,
Thrust, and Drag, which govern the aircraft’s ability to sustain flight,
accelerate, and maneuver.
Question 2. Bernoulli's Principle explains which aspect of lift
generation?
,3PK Prototype Professional Pilot
Knowledge Exam
A) Pressure differential above and below the airfoil
B) Newton’s third law of motion
C) Viscous forces acting on the airfoil
D) The angle of attack effects
Answer: A
Explanation: Bernoulli's Principle states that faster airflow over the top
of an airfoil results in lower pressure, creating a pressure differential
that produces lift.
Question 3. Which of the following best describes the Venturi effect?
A) Reduction in fluid pressure when flowing through a constricted
section
B) Increase in temperature with increased speed
,3PK Prototype Professional Pilot
Knowledge Exam
C) The effect of gravity on fluid flow
D) The increase in pressure at the stagnation point
Answer: A
Explanation: The Venturi effect describes how fluid pressure decreases
when flowing through a constricted passage, which contributes to lift in
aerodynamics.
Question 4. Development of lift is primarily explained by which two
principles?
A) Newton's laws and pressure differential
B) Bernoulli's principle and Venturi effect
C) Conservation of energy and entropy
D) Viscous forces and surface tension
, 3PK Prototype Professional Pilot
Knowledge Exam
Answer: A
Explanation: Lift development can be explained through Newton's laws
(action-reaction) and the pressure differential created by airflow over
the wing.
Question 5. What is the critical angle of attack?
A) The angle at which lift is maximized
B) The angle at which stall occurs
C) The maximum angle of attack before airflow separates
D) The angle at which drag is minimized
Answer: C
Explanation: The critical angle of attack is the angle at which airflow
separates from the airfoil surface, leading to a stall.
