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Buoyancy Principle Quiz

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Questions and Answers

What is the principle of buoyancy according to the text?

The body will be lifted up by a force more than the weight of the body.
The body will be lifted up by a force less than the weight of the body.
The body will be lifted up by a force equal to the weight of the body.
The body will be lifted up by a force equal to the weight of the fluid displaced by the body. (correct)

What happens to the pressure intensity in a rotating liquid as described in the text?

Inversely as the square of the radial distance (correct)
Linearly with radial distance
As the square of the radial distance
Regardless of its motion

Where does the line of action of the buoyant force act according to the text?

Centroid of the displaced volume of fluid (correct)
Centroid of the volume of fluid vertically above the body
Center of the volume of floating body
Center of gravity of any submerged body

Which statement about fluid particles is true?

The velocity of successive fluid particles, at any point, is the same at successive periods of time. (D) Signup and view all the answers

What happens to the density of water as described in the text?

Density is constant regardless of temperature changes. (C) Signup and view all the answers

Which of the following properties describes a dimensionless quantity?

Reynolds number (B) Signup and view all the answers

What is the specific weight 4.Méetacentric height given as per the text?

The distance between the center of gravity of the body and the meta center (D) Signup and view all the answers

What does a large Reynolds number indicate?

Highly turbulent flow (C) Signup and view all the answers

When does uniform flow occur?

When the size and shape of the cross section remain constant (B) Signup and view all the answers

What defines steady flow in a fluid system?

The direction and magnitude of velocity at all points are identical (A) Signup and view all the answers

What force causes the free surface of a liquid to contract to the smallest possible area?

Surface tension (D) Signup and view all the answers

Why is mercury often used in barometers?

Both (B) and (C) (C) Signup and view all the answers

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