Mechanical Engineering Hydraulics and Fluid Mechanics Online Test

The value of bulk modulus of a fluid is required to determine

In a depressed nappe

In one dimensional flow, the flow

The kinematic viscosity is the

A weir is said to be broad crested weir, if the width of the crest of the weir is __________ half the height of water above the weir crest.

An error of 1% in measuring head over the apex of the notch (H) will produce an error of __________ in discharge over a triangular notch.

Coefficient of contraction is the ratio of

In a free nappe,

The Reynold’s number of a ship is __________ to its velocity and length.

When a tube of smaller diameter is dipped in water, the water rises in the tube due to viscosity of water.

Coefficient of resistance is the ratio of

In order to measure the flow with a venturimeter, it is installed in

In a venturimeter, the velocity of liquid at throat is __________ than at inlet.

Which of the following is an example of laminar flow?

The pressure less than atmospheric pressure is known as

The total energy line lies over the hydraulic gradient line by an amount equal to the

A structure whose width is __________ the width of the channel, is called a flumed structure.

The maximum efficiency of transmission through a pipe is

The coefficient of viscosity may be determined by

The stability of a dam is checked for

An ideal fluid is frictionless and incompressible.

A manometer is used to measure

The centre of gravity of the volume of the liquid displaced is called

The coefficient of discharge for an external mouthpiece is

A siphon is used to connect two reservoirs at different levels intervened by a high ridge.

A flow in which the volume of a fluid and its density does not change during the flow is called __________ flow.

The loss of head due to an obstruction in a pipe is twice the loss of head at its entrance.

The body will sink down if the force of buoyancy is __________ the weight of the liquid displaced.

If a body floating in a liquid returns back to its original position, when given a small angular displacement, the body is said to be in

In an external mouthpiece, the absolute pressure head at vena contracta is __________ the atmospheric pressure head by an amount equal to 0.89 times the height of the liquid, above the vena contracta.