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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The point at which the resultant pressure on an immersed surface acts, is known as

Centre of depth
Centre of pressure
Centre of immersed surface
Centre of gravity

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Hydraulics and Fluid Mechanics in ME
Maximum impulse will be developed in hydraulic ram when

Supply pipe is long
Ram chamber is large
Supply pipe is short
Waste valve closes suddenly

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Hydraulics and Fluid Mechanics in ME
A flow through a long pipe at constant rate is called

Steady uniform flow
Unsteady non-uniform flow
Unsteady uniform flow
Steady non-uniform flow

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Hydraulics and Fluid Mechanics in ME
Flow occurring in a pipeline when a valve is being opened is

unsteady
vortex
steady
laminar

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Hydraulics and Fluid Mechanics in ME
The specific speed (Ns) of a centrifugal pump is given by

(N√Q)/H5/4
(N√Q)/H
(N√Q)/H2/3
(N√Q)/H3/4

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Hydraulics and Fluid Mechanics in ME
Braking jet in an impulse turbine is used

To break the jet of water
To change the direction of runner
To bring the runner to rest in a short time
None of these

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