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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The rise of liquid along the walls of a revolving cylinder about the initial level is _________ the depression of the liquid at the axis of rotation.

More than
None of these
Less than
Same as

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

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Hydraulics and Fluid Mechanics in ME
For very high discharge at low pressure such as for flood control and irrigation applications, following type of pump is preferred

Axial flow
Reciprocating
Mixed flow
Centrifugal

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Hydraulics and Fluid Mechanics in ME
A point, in a compressible flow where the velocity of fluid is zero, is called

Stagnation point
None of the listed here
Vena contracta
Critical point

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Hydraulics and Fluid Mechanics in ME
The absolute pressure is equal to

Gauge pressure - vacuum pressure
Gauge pressure - atmospheric pressure
Gauge pressure + atmospheric pressure
Atmospheric pressure - gauge pressure

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Hydraulics and Fluid Mechanics in ME
Which of the following statement is correct as regard to water wheels?

They have slow speeds
They are suitable even for low water heads
All of these
They give constant efficiency, even if the discharge is not constant

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