Quiz on Bernoulli's Principle and Aerodynamics

What does Bernoulli’s principle state about the relationship between velocity and pressure in a fluid?

• An increase in pressure leads to an increase in velocity.

• An increase in velocity leads to an increase in pressure.

• An increase in velocity leads to a decrease in pressure.

• Velocity and pressure are independent of each other.

Who discovered that the total pressure in a fluid remains constant?

• Isaac Newton

• Albert Einstein

• Daniel Bernoulli

• Galileo Galilei

What is the effect on static pressure when air is accelerated through a venturi tube?

• Static pressure fluctuates.

• Static pressure decreases.

• Static pressure remains constant.

• Static pressure increases.

Which of the following is NOT a method to increase lift force over an aircraft's wings?

• Increasing the wing's angle of attack

• Decreasing the speed of the relative air flow

• Increasing the speed of the relative air flow

• Increasing the camber of the wing

What is the term for the flow pattern where succeeding molecules follow the same path?

• Streamline flow

• Random flow

• Chaotic flow

• Turbulent flow

What happens at the transition point on an aircraft wing?

• The airflow reverses direction.

• The airflow becomes turbulent.

• The airflow becomes laminar.

• The airflow stops.

What is the main purpose of a cambered aerofoil?

• To increase drag

• To decrease lift

• To make the wing heavier

• To increase lift and reduce drag

Where is the greatest camber usually located on an aerofoil?

• At the midpoint of the chord

• At the leading edge

• About 30% of the chord back from the leading edge

• At the trailing edge

What is the effect of turbulent flow on an aircraft?

• It stabilizes the aircraft.

• It causes a wake of disturbed air.

• It reduces drag.

• It increases lift.

How can a sailboat move against the wind using the Bernoulli Effect?

• By increasing the weight of the sailboat

• By using a motor

• By creating a pressure difference across the sail

• By reducing the size of the sail