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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Center of pressure compared to e.g. is

Below it
Above it
Above or below depending on area of body
At same point

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Hydraulics and Fluid Mechanics in ME
The pressure of fluid due to hammer blow is

Directly proportional to (density)1/2 of fluid
Inversely proportional to (density)1/2 of fluid
Inversely proportional to density of fluid
Directly proportional to density of fluid

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Hydraulics and Fluid Mechanics in ME
In order to increase sensitivity of U-tube manometer, one leg is usually inclined by angle 'θ'. Sensitivity of inclined tube to sensitivity of U-tube is equal to

Sinθ
Cos θ
1/Cosθ
1/Sinθ

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Hydraulics and Fluid Mechanics in ME
The loss of head at entrance in a pipe is (where v = Velocity of liquid in the pipe)

v²/2g
0.75v²/2g
0.375v²/2g
0.5v²/2g

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Hydraulics and Fluid Mechanics in ME
The water in a jet propelled boat is drawn through the openings facing the direction of motion of the boat. The efficiency of propulsion is given by

V/(vr - v)
2V/(vr + v)
V/(vr + v)
2V/(vr - v)

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Hydraulics and Fluid Mechanics in ME
The pressure of liquid at throat in a Venturimeter is __________ than that at inlet.

None of these
Higher
Lower
Same

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