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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Motion of a liquid in a volute casing of a centrifugal pump is an example of

Rotational flow
Spiral vortex flow
Forced spiral vortex flow
Radial

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Hydraulics and Fluid Mechanics in ME
The mass of 2.5 m3 of a certain liquid is 2 tonnes. Its mass density is

400 kg/m3
800 kg/m3
600 kg/m3
200 kg/m3

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Hydraulics and Fluid Mechanics in ME
Choose the correct relationship

gravity = specific gravity x density
specific gravity = gravity x density
kinematicviscosity = dynamicviscosity x density
dynamicviscosity = kinematicviscosity x density

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Hydraulics and Fluid Mechanics in ME
The pressure of fluid due to hammer blow is

Inversely proportional to (density)1/2 of fluid
Inversely proportional to density of fluid
Directly proportional to density of fluid
Directly proportional to (density)1/2 of fluid

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Hydraulics and Fluid Mechanics in ME
All the terms of energy in Bernoulli’s equation have dimension of

work
length
energy
mass

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Hydraulics and Fluid Mechanics in ME
A liquid would wet the solid, if adhesion forces as compared to cohesion forces are

equal
less
less at low temperature and more at high temperature
more

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