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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
If the dynamic viscosity of a fluid is 0.5 poise and specific gravity is 0.5, then the kinematic viscosity of that fluid in stokes is

1
0.25
0.5
None of these

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

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Hydraulics and Fluid Mechanics in ME
The normal stress in a fluid will be constant in all directions at a point only if

It is at rest
It has uniform viscosity
It is incompressible
It has zero viscosity

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Hydraulics and Fluid Mechanics in ME
The relation between hydraulic efficiency (ηh), mechanical efficiency (ηm) and overall efficiency (ηo) is

ηo = ηh × ηm
ηh = ηo × ηm
ηm = ηm × ηh
None of these

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Hydraulics and Fluid Mechanics in ME
A jet of water is striking at the centre of a curved vane moving with a uniform velocity in the direction of jet. For the maximum efficiency, the vane velocity is ________ of the jet velocity

Three-fourth
One-third
Two-third
One-half

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

pressure
flow
velocity
dsscharge

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