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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The specific weight of sea water is __________ that of pure water.

Less than
None of these
More than
Same as

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Hydraulics and Fluid Mechanics in ME
The coefficient of discharge in case of internal mouthpiece is __________ that of external mouthpiece.

None of these
Equal to
Less than
More than

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Hydraulics and Fluid Mechanics in ME
The power transmitted through a pipe is (where w = Specific weight in N/m3, and Q = Discharge in m3/s)

w × Q × hf
w × Q × H
w × Q (H - hf)
w × Q (H + hf)

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Hydraulics and Fluid Mechanics in ME
In a depressed nappe

The pressure above the nappe is negative
The pressure below the nappe is negative
The pressure above the nappe is atmospheric
The pressure below the nappe is atmospheric

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Hydraulics and Fluid Mechanics in ME
Center of buoyancy is the

e.g. of floating body
does not exist
center of pressure of displaced volume
centroid of the displaced volume of fluid

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Hydraulics and Fluid Mechanics in ME
Which of the following turbine is preferred for 0 to 25 m head of water?

Kaplan turbine
None of these
Pelton wheel
Francis turbine

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