Hydraulics and Fluid Mechanics in ME
If a pump is handling water and is discharging a certain flow Q at a constant total dynamic head requiring a definite B.H.P., the same pump when handling a liquid of specific gravity 0.75 and viscosity nearly same as of water , the horse power required will be

0.75 B.H.P
Same
1.5 B.H.P
H.P./0.75

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Hydraulics and Fluid Mechanics in ME
In an outward flow reaction turbine

The water enters the wheel at the outer periphery and then flows towards the centre of the wheel
The water enters at the centre of the wheel and then flows towards the outer periphery of the wheel
The flow of water is partly radial and partly axial
The water flows parallel to the axis of the wheel

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