Bernoulli’s principle and lift generation MCQs – Aerospace

1. Bernoulli’s principle states that as the speed of a fluid increases, its pressure:
(A) Increases
(B) Decreases
(C) Remains constant
(D) Doubles

2. The lift on an airfoil is generated primarily due to:
(A) High pressure on the upper surface
(B) Low pressure on the upper surface
(C) High pressure on both surfaces
(D) Equal pressure on both surfaces

3. According to Bernoulli’s principle, the faster airflow over the curved upper surface of an airfoil creates:
(A) Higher pressure
(B) Lower pressure
(C) No change in pressure
(D) Increased drag

4. Which of the following contributes most to lift generation according to Bernoulli’s principle?
(A) Airfoil camber
(B) Airfoil thickness
(C) Wingtip vortices
(D) Aircraft weight

5. The primary factor affecting the application of Bernoulli’s principle in aerodynamics is:
(A) Density of air
(B) Temperature of air
(C) Humidity of air
(D) Viscosity of air

6. Lift generation in an aircraft wing is a result of:
(A) Newton’s third law only
(B) Bernoulli’s principle only
(C) Both Bernoulli’s principle and Newton’s third law
(D) Boyle’s law

7. Increasing the angle of attack initially results in:
(A) Increased lift
(B) Decreased lift
(C) No change in lift
(D) Increased pressure on the upper surface

8. If airspeed over the upper surface of a wing decreases, the lift will:
(A) Increase
(B) Decrease
(C) Remain the same
(D) Double

9. The pressure difference between the upper and lower surfaces of a wing is known as:
(A) Drag force
(B) Lift coefficient
(C) Dynamic pressure
(D) Pressure differential

10. The velocity of air on the upper surface of an airfoil is greater than the lower surface because:
(A) The airfoil is flat
(B) The airfoil is symmetrical
(C) The airfoil shape forces air to move faster on top
(D) The wing is made of lightweight material