Hydraulics and Fluid Mechanics in ME
If the atmospheric pressure on the surface of an oil tank (sp. gr. 0.8) is 0.2 kg/cm”, the pressure at a depth of 50 m below the oil surface will be

2 meters of water column
3 meters of water column
5 meters of water column
6 meters of water Column

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Hydraulics and Fluid Mechanics in ME
A vertical wall is subjected to a pressure due to one kind of liquid, on one of its sides. Which of the following statement is correct?

The pressure on the bottom of the wall is zero
The pressure on the wall at the liquid level is zero, and on the bottom of the wall is maximum
The pressure on the wall at the liquid level is minimum
The pressure on the bottom of the wall is maximum

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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 lift larger load by the application of a comparatively much smaller force
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

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