Hydraulics and Fluid Mechanics in ME
The hydraulic grade line is

always above the centre line of pipe
never above the energy grade line
All of these
always sloping downward in the direction of flow

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

To lift larger load by the application of a comparatively much smaller force
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 store pressure energy which may be supplied to a machine later on

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