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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
In a centrifugal pump casing, the flow of water leaving the

Radial
Axial
Centrifugal
Vortex

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Hydraulics and Fluid Mechanics in ME
In an internal mouthpiece, the absolute pressure head at vena contracta is __________ the atmospheric pressure head by an amount equal to height of the liquid above the vena contracta.

Less than
None of these
More than
Equal to

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Hydraulics and Fluid Mechanics in ME
Practical fluids

possess all the above properties
are compressible
possess surface tension
are viscous

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Hydraulics and Fluid Mechanics in ME
Pascal-second is the unit of

surface tension
kinematic viscosity
dynamic viscosity
pressure

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Hydraulics and Fluid Mechanics in ME
Geometric similarity is said to exist between the model and the prototype, if both of them

Have identical forces
Are identical in shape, but differ only in size
Have identical velocities
Are equal in size and shape

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Hydraulics and Fluid Mechanics in ME
The magnitude of water hammer depends upon the

All of these
Elastic properties of the pipe material
Speed at which the valve is closed
Elastic properties of the liquid flowing through the pipe

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