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Hydraulics & Fluid Mechanics

Hydraulics & Fluid Mechanics
Which of the following is demensionless

specific volume
specific gravity
specific weight
specific speed

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Hydraulics & Fluid Mechanics
THE THEORETICAL VALUE OF COEFFICIENT OF CONTRACTION OF A SHARP EDGED ORIFICE IS

0.95
1.01
0.86
0.611

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Hydraulics & Fluid Mechanics
To avoid vaporisation in the pipe line, the pipe line over the ridge is laid such that it is not more than

6.4 m above the hydraulic gradient
2.4 m above the hydraulic gradient
10.0 m above the hydraulic gradient
5.0 above the hydraulic gradient

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Hydraulics & Fluid Mechanics
Separation of flow occurs when

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

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Hydraulics & Fluid Mechanics
The line of action of the buoyant force acts through the centroid of the

volume of the fluid vertically above the body
submerged body
displaced volume of the fluid
volume of the floating body

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Hydraulics & Fluid Mechanics
The region between the separation streamline and the boundary surface of the solid body is known as

lift
boundary layer
wake
drag

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