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Hydraulics & Fluid Mechanics

Hydraulics & Fluid Mechanics
The discharge over a broad crested weir is maximum when the depth of flow is (where H is the available head)

2 H/3
H/2
2 H/5
H/3

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Hydraulics & Fluid Mechanics
An open vessel of water is accelerated up an inclined plane. The free water surface will

make an angle in opposite direction to inclination of inclined plane
make an angle in direction of inclination of inclined plane
any one of above is possible
be horizontal

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Hydraulics & Fluid Mechanics
According to the principle of buoyancy a body totally or partially immersed in a fluid will be lifted up by a force equal to

less than the weight of the body
weight of the fluid displaced by the body
the weight of the body
more than the weight of the body

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Hydraulics & Fluid Mechanics
The continuity equation pi V,A,= p2V2A2 is based on the following assumption regarding flow of fluid (where pi and p2 are mass densities.)

incompressible flow
uniform flow
frictionless flow
steady flow

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Hydraulics & Fluid Mechanics
Separation of flow occurs when

the boundary layer comes to rest
the pressure intensity reaches a minimum
the cross-section of a channel is reduced
All of these

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Hydraulics & Fluid Mechanics
The flow which neglects changes in a transverse direction is known as

one dimensional flow
steady flow
uniform flow
turbulent flow

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