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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The efficiency of power transmission through pipe is (where H = Total supply head, and hf = Head lost due to friction in the pipe)

H/(H + hf )
(H - hf )/H
H/(H - hf )
(H + hf )/H

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Hydraulics and Fluid Mechanics in ME
The resultant upward pressure of the fluid on an immersed body is called

center of pressure
all the above are correct
buoyancy
upthrust

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Hydraulics and Fluid Mechanics in ME
The centre of pressure acts __________ the centre of gravity of immersed surface.

None of these
Above
At
Below

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Hydraulics and Fluid Mechanics in ME
A piece of wood having weight 5 kg floats in water with 60% of its volume under the liquid. The specific gravity of wood is

0.6
0.83
0.3
0.4

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Hydraulics and Fluid Mechanics in ME
The Fourneyron turbine is _________ reaction turbine.

An inward flow
An axial flow
A mixed flow
An outward flow

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Hydraulics and Fluid Mechanics in ME
The vapour pressure over the concave surface is

less man the vapour pressure over the plane surface
equal to the vapour pressure over the plane surface
zero
greater than the vapour pressure over the plane surface

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