Mechanical Engineering · all questions

Hydraulics And Fluid Mechanics
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Q181

The discharge through a channel of circular section will be maximum when the depth of water is __________ the diameter of the circular channel.

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Q182

The discharge over a rectangular weir, considering the velocity of approach, is (where H₁ = H + H_a)
(H₁ = Total height of water above the weir, H = Height of water over the crest of the weir and H_a = Height of water due to velocity of approach)

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Q183

A liquid compressed in cylinder has a volume of 0.04 m³ at 50 kg/cm² and a volume of 0.039 m³ at 150 kg/cm². The bulk modulus of elasticity of liquid is

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Q184

The total energy of each particle at various places in the case of perfect incompressible fluid flowing in continuous stream

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Q185

Select the correct statement

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Q186

Select the correct statement

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Q187

The discharge in an open channel corresponding to critical depth is

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Q188

A channel is said to be of most economical cross-section, if

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Q189

When the coefficient of discharge (C_d) is 0.623, then the general equation for discharge over a rectangular weir is

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Q190

The length AB of a pipe ABC in which the liquid is flowing has diameter (d₁) and is suddenly contracted to diameter (d₂) at B which is constant for the length BC. The loss of head due to sudden contraction, assuming coefficient of contraction as 0.62, is

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Q191

The power transmitted through the pipe is maximum when the head lost due to friction is equal to

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Q192

The flow which neglects changes in a transverse direction is known as

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Q193

If Hg is the gross or total head and hf is the head lost due to friction, then net or effective head (H) is given by

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Q194

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

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Q195

Coefficient of velocity is defined as the ratio of

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Q196

For measuring flow by a Venturimeter, if should be installed in

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Q197

The maximum discharge over a broad crested weir is

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Q198

In a centrifugal pump, the liquid enters the pump

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Q199

The ratio of the inertia force to the __________ is called Euler's number.

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Q200

Bulk modulus of a fluid is the ratio of

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