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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
In a free vortex motion, the radial component of velocity everywhere is

minimum
maximum
non-zero and finite
zero

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Hydraulics and Fluid Mechanics in ME
The flow rate in gear pump

Decreases with increase in pressure
Increases with increase in pressure
More or less remains constant with increase in pressure
Unpredictable

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Hydraulics and Fluid Mechanics in ME
Cavitation is caused by

weak material
low pressure
high pressure
high velocity

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Hydraulics and Fluid Mechanics in ME
For 450 m head of water, _________ shall be used.

Kaplan turbine
Pelton wheel
Francis turbine
None of these

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Hydraulics and Fluid Mechanics in ME
A flow in which the volume of a fluid and its density does not change during the flow is called _________ flow.

None of these
Incompressible
Viscous
Compressible

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Hydraulics and Fluid Mechanics in ME
The losses are more in

turbulent flow
critical flow
transition flow
laminar flow

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