Fluid Mechanics Quiz

What is the main advantage of using an inclined manometer?

• Portability

• Higher accuracy for small pressure changes

• Durability

• Cost-effectiveness

Which of the following is true about buoyant force?

• It acts downward.

• It acts upward.

• It acts horizontally.

• It acts in the direction of gravity.

What is Bernoulli's equation for incompressible fluid flow?

• P + ρv² + gh = constant

• P + 0.5ρv + gh = constant

• P + 0.5ρv² + ρgh = constant

• P + ρv + ρgh = constant

A marine pump needs to deliver water at a flow rate of 0.1 m³/s through a 0.2 m diameter pipe. What is the required velocity of the water in the pipe?

• 3.18 m/s

• 5.09 m/s

• 1.59 m/s

• 6.37 m/s

What is the term for the vertical distance from the keel to the waterline?

• Draft.

• Freeboard.

• Depth.

• Height.

If a pipe has a cross-sectional area of 0.05 m² and carries a fluid at 2 m/s, what is the volumetric flow rate (Q)?

• 0.1 m³/s

• 0.01 m³/s

• 1.0 m³/s

• 2.0 m³/s

What is the term for the difference in draft between the bow and the stern of a ship?

• Heel.

• Trim.

• List.

• Roll.

What is the formula for calculating the buoyant force?

• Buoyant force = Volume of fluid displaced × Density of fluid × Gravity.

• Buoyant force = Mass of object × Gravity.

• Buoyant force = Volume of object × Density of object × Gravity.

• Buoyant force = Weight of object × Gravity.

If an object floats on water, what can be said about its density?

• It is greater than the density of water.

• It is equal to the density of water.

• It is less than the density of water.

• It has no relation to the density of water.

In a pipe, fluid velocity increases and static pressure decreases. Which principle explains this?

• Pascal's principle

• Archimedes' principle

• Bernoulli's principle

• Conservation of mass