ATPL - PRINCIPLES OF FLIGHT WITH EXAM QUESTIONS AND
CORRECT ANSWERS WITH RATIONALES.
ATPL – Principles of Flight – Questions 1–30
Question 1
Which force opposes lift in straight and level flight?
A. Weight
B. Thrust
C. Drag
D. Gravity
Correct Answer: A
Rationale:
Weight is the force due to gravity and acts downward, opposing lift.
Question 2
Which force opposes thrust?
A. Drag
B. Lift
C. Weight
D. Gravity
Correct Answer: A
Rationale:
Drag resists motion through the air, acting opposite to thrust.
Question 3
Which factor primarily generates lift?
A. Airflow over the wing creating pressure difference
B. Engine thrust
C. Aircraft weight
D. Wing fuel load
Correct Answer: A
,Rationale:
Lift is produced due to pressure differences over and under the airfoil.
Question 4
What is angle of attack (AOA)?
A. Angle between chord line of wing and relative airflow
B. Angle between fuselage and horizon
C. Flap deflection angle
D. Rudder angle
Correct Answer: A
Rationale:
AOA directly affects lift and stall characteristics.
Question 5
What occurs if the AOA exceeds critical value?
A. Stall
B. Increase in thrust
C. Maximum cruise
D. Reduced drag
Correct Answer: A
Rationale:
Exceeding critical AOA disrupts airflow, causing loss of lift.
Question 6
Which component increases lift at low speeds?
A. Flaps
B. Ailerons
C. Rudder
D. Slats
Correct Answer: A
Rationale:
Flaps increase wing camber and surface area, enhancing lift during takeoff/landing.
Question 7
What is induced drag?
, A. Drag caused by lift generation
B. Drag from friction with air
C. Drag due to landing gear
D. Thrust loss
Correct Answer: A
Rationale:
Induced drag occurs when air is deflected downward to produce lift.
Question 8
What is parasite drag?
A. Drag from aircraft shape and surface friction
B. Drag due to lift
C. Engine drag
D. Weather drag
Correct Answer: A
Rationale:
Parasite drag increases with airspeed and includes form, skin friction, and interference drag.
Question 9
Which axis controls roll?
A. Longitudinal axis
B. Lateral axis
C. Vertical axis
D. Diagonal axis
Correct Answer: A
Rationale:
Roll occurs around the aircraft’s longitudinal axis using ailerons.
Question 10
Which axis controls pitch?
A. Lateral axis
B. Longitudinal axis
C. Vertical axis
D. Horizontal axis
Correct Answer: A
CORRECT ANSWERS WITH RATIONALES.
ATPL – Principles of Flight – Questions 1–30
Question 1
Which force opposes lift in straight and level flight?
A. Weight
B. Thrust
C. Drag
D. Gravity
Correct Answer: A
Rationale:
Weight is the force due to gravity and acts downward, opposing lift.
Question 2
Which force opposes thrust?
A. Drag
B. Lift
C. Weight
D. Gravity
Correct Answer: A
Rationale:
Drag resists motion through the air, acting opposite to thrust.
Question 3
Which factor primarily generates lift?
A. Airflow over the wing creating pressure difference
B. Engine thrust
C. Aircraft weight
D. Wing fuel load
Correct Answer: A
,Rationale:
Lift is produced due to pressure differences over and under the airfoil.
Question 4
What is angle of attack (AOA)?
A. Angle between chord line of wing and relative airflow
B. Angle between fuselage and horizon
C. Flap deflection angle
D. Rudder angle
Correct Answer: A
Rationale:
AOA directly affects lift and stall characteristics.
Question 5
What occurs if the AOA exceeds critical value?
A. Stall
B. Increase in thrust
C. Maximum cruise
D. Reduced drag
Correct Answer: A
Rationale:
Exceeding critical AOA disrupts airflow, causing loss of lift.
Question 6
Which component increases lift at low speeds?
A. Flaps
B. Ailerons
C. Rudder
D. Slats
Correct Answer: A
Rationale:
Flaps increase wing camber and surface area, enhancing lift during takeoff/landing.
Question 7
What is induced drag?
, A. Drag caused by lift generation
B. Drag from friction with air
C. Drag due to landing gear
D. Thrust loss
Correct Answer: A
Rationale:
Induced drag occurs when air is deflected downward to produce lift.
Question 8
What is parasite drag?
A. Drag from aircraft shape and surface friction
B. Drag due to lift
C. Engine drag
D. Weather drag
Correct Answer: A
Rationale:
Parasite drag increases with airspeed and includes form, skin friction, and interference drag.
Question 9
Which axis controls roll?
A. Longitudinal axis
B. Lateral axis
C. Vertical axis
D. Diagonal axis
Correct Answer: A
Rationale:
Roll occurs around the aircraft’s longitudinal axis using ailerons.
Question 10
Which axis controls pitch?
A. Lateral axis
B. Longitudinal axis
C. Vertical axis
D. Horizontal axis
Correct Answer: A
