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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The depth of the centre of pressure on a vertical rectangular gate 8 m wide and 6 m high, when the water surface coincides with the top of the gate, is

3.0 m
4.0 m
5.0 m
2.4 m

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Hydraulics and Fluid Mechanics in ME
The motion of air mass in a tornado is a

forced vortex motion
free vortex motion
free vortex at center and forced vortex outside
forced vortex at center and free vortex outside

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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
more
less
less at low temperature and more at high temperature

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Hydraulics and Fluid Mechanics in ME
Discharge (Q) of a centrifugal pump is given by (where D = Diameter of impeller at inlet, b = Width of impeller at inlet, and Vf = Velocity of flow at inlet)

Q = π.D.bf.V
Q = π.D.Vf
Q = D.b.Vf
Q = π.b.Vf

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Hydraulics and Fluid Mechanics in ME
Center of buoyancy is the

e.g. of floating body
centroid of the displaced volume of fluid
center of pressure of displaced volume
does not exist

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Hydraulics and Fluid Mechanics in ME
The flow in which the particles of a fluid attain such velocities that vary from point to point in magnitude and direction as well as from instant to instant, is known as

one dimensional flow
turbulent flow
uniform flow
steady flow

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