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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
In a centrifugal pump, the liquid enters the pump

At the top
At the canter
From sides
At the bottom

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Hydraulics and Fluid Mechanics in ME
Coefficient of discharge Cd is equal to (where Cc = Coefficient of contraction, Cv = Coefficient of velocity, and Cr = Coefficient of resistance)

Cv × Cr
Cc × Cv
Cc/Cr
Cc × Cr

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

flow
velocity
dsscharge
pressure

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Hydraulics and Fluid Mechanics in ME
The force exerted by a jet of water (in a direction normal to flow) impinging on a fixed plate inclined at an angle θ with the jet is

(waV/2g) × sin θ
(waV²/2g) × sin 2θ
(waV/g) × sin θ
(waV²/g) × sin θ

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Hydraulics and Fluid Mechanics in ME
Unit of surface tension is

Energy/unit area
It has no units
Both of the above
Velocity/unit area

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Hydraulics and Fluid Mechanics in ME
The most economical section of a rectangular channel is one which has hydraulic mean depth or hydraulic radius equal to

Twice the depth
Half the breadth
Half the depth
Twice the breadth

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