Hydraulics and Fluid Mechanics in ME
The magnitude of water hammer depends upon the

Speed at which the valve is closed
Elastic properties of the pipe material
All of these
Elastic properties of the liquid flowing through the pipe

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Hydraulics and Fluid Mechanics in ME
Coefficient of velocity is defined as the ratio of

Area of jet at vena contracta to the area of orifice
Actual velocity of jet at vena contracta to the theoretical velocity
Actual discharge through an orifice to the theoretical discharge
None of these

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Hydraulics and Fluid Mechanics in ME
A hydraulic press is a device used

To store pressure energy which may be supplied to a machine later on
To increase the intensity of pressure of water by means of energy available from a large quantity of water at a low pressure
All of these
To lift larger load by the application of a comparatively much smaller force

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