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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The pressure of air __________ with the increase of height from the surface of the earth.

None of these
Increases
Decreases
Does not change

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Hydraulics and Fluid Mechanics in ME
The pressure less than atmospheric pressure is known as

Vacuum pressure
Suction pressure
All of the listed here
Negative gauge pressure

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

minimum
zero
maximum
non-zero and finite

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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
More than
Less than
Equal to

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Hydraulics and Fluid Mechanics in ME
In a Francis turbine runner, the numbers of blades are generally between

8 to 16
2 to 4
4 to 8
16 to 24

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Hydraulics and Fluid Mechanics in ME
Center of buoyancy is the

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

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