Physics MCQs Aeronautical Engineering
1. What is the lift force on an aircraft primarily generated by?
a) Engine thrust
b) Wing shape and airflow
c) Aircraft weight
d) Rudder deflection
Answer: b) Wing shape and airflow
2. In a steady level flight, the lift generated by the aircraft is equal to:
a) The drag force
b) The thrust
c) The weight of the aircraft
d) The centripetal force
Answer: c) The weight of the aircraft
3. The centripetal force required for an aircraft to turn is provided by:
a) Thrust
b) Lift
c) Drag
d) Weight
Answer: b) Lift
4. The moment of inertia of a body depends on:
a) Its mass only
b) The distribution of mass relative to the axis of rotation
c) Its velocity
d) The force applied to it
Answer: b) The distribution of mass relative to the axis of rotation
5. Which principle explains the operation of a gyroscope in an aircraft?
a) Bernoulli’s principle
b) Newton’s second law
c) Conservation of angular momentum
d) Conservation of linear momentum
Answer: c) Conservation of angular momentum
6. The Kármán line, which defines the boundary of space, is located at an altitude of:
a) 50 km
b) 100 km
c) 200 km
d) 300 km
Answer: b) 100 km
7. The Mach number is defined as the ratio of:
a) Speed of sound to the speed of the aircraft
b) Speed of the aircraft to the speed of sound
c) Air density to the speed of sound
d) Speed of light to the speed of sound
Answer: b) Speed of the aircraft to the speed of sound
8. For a supersonic aircraft, the Mach number is:
a) Less than 1
b) Equal to 1
c) Greater than 1
d) Zero
Answer: c) Greater than 1
9. Which law governs the motion of an object in the presence of a net external force?
a) Newton’s first law
b) Newton’s second law
c) Newton’s third law
d) Archimedes’ principle
Answer: b) Newton’s second law
10. The drag force acting on an object moving through a fluid is proportional to:
a) The velocity
b) The square of the velocity
c) The mass of the object
d) The temperature of the fluid
Answer: b) The square of the velocity