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

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

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Hydraulics and Fluid Mechanics in ME
In open channels, the specific energy is the

Total energy measured above the horizontal datum
Total energy per unit discharge
Kinetic energy plotted above the free surface of water
Total energy measured with respect to the datum passing through the bottom of the channel

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Hydraulics and Fluid Mechanics in ME
When a body is placed over a liquid, it will sink down if

Gravitational force is more than the up-thrust of the liquid
Gravitational force is less than the up-thrust of the liquid
Gravitational force is equal to the up-thrust of the liquid
None of these

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