Physics of Flight MCQs January 8, 2026August 23, 2024 by u930973931_answers 20 min Score: 0 Attempted: 0/20 Subscribe 1. What is Bernoulliâs principle primarily concerned with in flight? (A) The conservation of mass (B) The conservation of energy (C) The balance of forces (D) The relationship between pressure and velocity in a fluid 2. What causes lift on an aircraft wing? (A) The wingâs shape and angle of attack (B) The aircraftâs weight (C) The thrust of the engines (D) The drag force 3. What does the term âangle of attackâ refer to? (A) The angle of the aircraftâs climb (B) The angle between the wing and the aircraftâs longitudinal axis (C) The angle between the wingâs chord line and the airflow (D) The angle between the vertical stabilizer and the airflow 4. Which law states that for every action, there is an equal and opposite reaction? (A) Newtonâs Third Law (B) Newtonâs Second Law (C) Newtonâs First Law (D) Bernoulliâs Principle 5. What is the primary force acting against an aircraftâs motion? (A) Lift (B) Thrust (C) Weight (D) Drag 6. What is the lift coefficient (Cl) dependent on? (A) The shape of the wing and the angle of attack (B) The aircraftâs speed (C) The density of the air (D) The aircraftâs weight 7. How does increasing the airspeed affect the lift produced by a wing? (A) Lift increases (B) Lift remains the same (C) Lift decreases (D) Lift becomes zero 8. What is the definition of the drag coefficient (Cd)? (A) A measure of the wingâs efficiency (B) A measure of the lift-to-drag ratio (C) A measure of the resistance force of an object (D) A measure of the aircraftâs speed 9. What is the purpose of a wingâs leading edge? (A) To increase lift (B) To reduce drag (C) To streamline airflow (D) To balance weight 10. How does the Reynolds number affect the flow over an aircraftâs wing? (A) It affects the transition from laminar to turbulent flow (B) It determines the amount of drag (C) It changes the angle of attack (D) It influences the thrust-to-weight ratio 11. What is the primary purpose of wing flaps? (A) To increase drag (B) To decrease lift (C) To reduce weight (D) To increase lift and improve low-speed performance 12. What is the significance of the center of pressure on an aircraft wing? (A) It is the point where thrust is applied (B) It is the point where the weight is concentrated (C) It is the point where drag is minimized (D) It is the point where the lift force is concentrated 13. What does the term âstallâ refer to in aviation? (A) A condition where the wingâs angle of attack is too high, leading to a loss of lift (B) A decrease in engine performance (C) A complete loss of control (D) A momentary loss of thrust 14. What is the primary effect of a high aspect ratio wing? (A) Increased drag (B) Increased lift-to-drag ratio (C) Reduced maneuverability (D) Higher stall speed 15. How does air density affect aircraft performance? (A) Lower density increases lift and decreases drag (B) Higher density decreases lift and increases drag (C) Higher density increases lift and reduces drag (D) Air density has no effect on performance 16. What is the purpose of the aircraftâs control surfaces? (A) To control the aircraftâs orientation and stability (B) To manage airflow around the aircraft (C) To increase the aircraftâs speed (D) To reduce engine noise 17. What is the relationship between lift and drag in a properly designed aircraft wing? (A) Lift always equals drag (B) Lift is independent of drag (C) Drag is always greater than lift (D) Lift is typically greater than drag 18. What is the main purpose of the aircraftâs vertical stabilizer? (A) To provide lateral stability (B) To provide directional stability (C) To provide longitudinal stability (D) To improve the lift-to-drag ratio 19. How does the Mach number affect the compressibility of air? (A) At low Mach numbers, air compressibility is significant (B) At high Mach numbers, air compressibility becomes significant (C) Air compressibility is not affected by the Mach number (D) Air compressibility decreases with higher Mach numbers 20. What is the definition of âdynamic pressureâ? (A) The pressure of the fluid due to its motion (B) The pressure of the fluid due to its density (C) The pressure of the fluid due to altitude (D) The pressure exerted by the aircraftâs engines