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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The critical depth for a channel is given by (where q = Unit discharge (discharge per unit width) through the channel)

(q⁴/g)1/5
(q/g)1/2
(q²/g)1/3
(q³/g)1/4

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Hydraulics and Fluid Mechanics in ME
In case of an airfoil, the separation of flow occurs

any where between rear and front of body depending upon Reynolds number
at the extreme front of body
at the extreme rear of body
midway between rear and front of body

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Hydraulics and Fluid Mechanics in ME
A hydraulic accumulator is a device used to store _________ energy which may be supplied to a machine later on.

Kinetic
Strain
Pressure
None of these

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

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

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Hydraulics and Fluid Mechanics in ME
Which of the following pump is suitable for small discharge and high heads?

Centrifugal pump
Reciprocating pump
Mixed flow pump
Axial flow pump

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Hydraulics and Fluid Mechanics in ME
A body floating in a liquid is said to be in neutral equilibrium, if its metacentre

Lies between the centre of buoyancy and centre of gravity
Lies above its centre of gravity
Lies below its centre of gravity
Coincides with its centre of gravity

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