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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The total energy line lies over the centre line of the pipe by an amount equal to

Pressure head - velocity head
Pressure head
Pressure head + velocity head
Velocity head

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Hydraulics and Fluid Mechanics in ME
The ratio of the inertia force to the elastic force is called

Weber's number
Reynold's number
Mach number
Froude's number

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Hydraulics and Fluid Mechanics in ME
Centre of buoyancy always

remains above the centre of gravity
remains below the centre of gravity
coincides with the centre of gravity
coincides with the centroid of the volume of fluid displaced

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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-half
One-third
Two-third

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Hydraulics and Fluid Mechanics in ME
Stream lines and path lines always coincide in case of

uniform flow
turbulent flow
steady flow
laminar flow

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Hydraulics and Fluid Mechanics in ME
The units of kinematic viscosity are

newton-sec per meter
metres² per sec
newton-sec per meter
kg sec/meter

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