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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Which of the following velocity potentials satisfies continuity equation ?

cosx
x2-y2
x2y
x2 + y2

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Hydraulics and Fluid Mechanics in ME
For very great pressures, viscosity of moss gases and liquids

shows erratic behaviour
increases
decreases
remains same

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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

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

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Hydraulics and Fluid Mechanics in ME
When a plate is immersed in a liquid parallel to the flow, it will be subjected to a pressure __________ that if the same plate is immersed perpendicular to the flow.

Equal to
More than
Less than
None of these

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Hydraulics and Fluid Mechanics in ME
A double overhung Pelton wheel has

Two runners
Four runners
Two jets
Four jets

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Hydraulics and Fluid Mechanics in ME
In a venturi-flume, the flow takes place at

Absolute pressure
Atmospheric pressure
Gauge pressure
None of these

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