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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The centre of pressure for a vertically immersed surface lies at a distance equal to __________ the centre of gravity.

Ax̅ / IG below
IG / Ax̅ above
Ax̅ / IG above
IG / Ax̅ below

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Hydraulics and Fluid Mechanics in ME
Pitot tube is used for measurement of

flow
dsscharge
velocity
pressure

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Hydraulics and Fluid Mechanics in ME
When an internal mouthpiece is running free, the discharge through the mouthpiece is (where a = Area of mouthpiece, and H = Height of liquid above the mouthpiece)

√2gH
0.5 a. √2gH
0.855 a. √2gH
0.707 a. √2gH

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Hydraulics and Fluid Mechanics in ME
Rotameter is a device used to measure

flow
rotation
velocity of fluid
absolute pressure

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Hydraulics and Fluid Mechanics in ME
Hydraulic accumulator is used for

Supplying large quantities of oil for very short duration
Accumulating oil
Generally high pressures to operate hydraulic machines
Supplying energy when main supply fails

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Hydraulics and Fluid Mechanics in ME
The speed of a turbine runner is

Directly proportional to H3/2
Directly proportional to H1/2
Inversely proportional to H3/2
Inversely proportional to H1/2

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