Fluid Mechanics Quiz

What is the measure of deformation of materials?

• Pressure

• Strain

• Area

• Force

Answer explanation

The measure of deformation of materials is represented by Strain, which quantifies the amount of deformation in a material under stress.

What is the ratio between stress and strain?

• Young's Modulus

• Density

• Pascal's Principle

• Specific Gravity

Answer explanation

The ratio between stress and strain is represented by Young's Modulus.

What is the formula for liquid pressure depending on the density of the liquid?

• P = V/T

• P = 𝜌𝑔ℎ

• P = F/A

• P = DL/L0

Answer explanation

The correct formula for liquid pressure depending on the density of the liquid is P = 𝜌𝑔ℎ.

According to Pascal's principle, what happens in a closed container with a pressure change?

• Pressure is lost

• Pressure is transmitted without loss

• Pressure is halved

• Pressure is doubled

Answer explanation

According to Pascal's principle, pressure is transmitted without loss in a closed container with a pressure change.

What does Archimedes' principle state about the buoyant force on a body immersed in a fluid?

• It is equal to the weight of the body

• It is zero

• It is equal to the weight of the fluid displaced

• It is infinite

Answer explanation

Archimedes' principle states that the buoyant force on a body immersed in a fluid is equal to the weight of the fluid displaced.

What is the apparent weight of an object submerged in a fluid?

• Equal to the sum of both weights

• Equal to the weight of the object in air

• Equal to the weight of the fluid displaced

• Not related to weight

Answer explanation

The apparent weight of an object submerged in a fluid is equal to the weight of the object in air. This is because the buoyant force acting on the object in the fluid counteracts the weight of the object, resulting in the apparent weight being the same as the weight in air.

What is the difference between the weight of an object in air and when submerged in a fluid?

• Zero

• Equal to the buoyant force

• Equal to the weight of the fluid

• Depends on the object's shape

Answer explanation

The difference between the weight of an object in air and when submerged in a fluid is equal to the buoyant force.

What is the volume relationship between an object submerged in a fluid and the displaced fluid?

• Volume of object = Volume of fluid

• Volume of object < Volume of fluid

• Volume of object > Volume of fluid

• No relationship

Answer explanation

The correct relationship between an object submerged in a fluid and the displaced fluid is that the volume of the object is equal to the volume of the fluid displaced.

What is the thrust force acting on an object immersed in a fluid called?

• Weight force

• Buoyant force

• Tension force

• Frictional force

Answer explanation

The thrust force acting on an object immersed in a fluid is called the buoyant force, which is the upward force exerted by a fluid that opposes the weight of an immersed object.

What does liquid pressure depend on?

• Temperature

• Density of the liquid

• Volume

• Viscosity

Answer explanation

Liquid pressure depends on the density of the liquid. The denser the liquid, the higher the pressure it exerts.