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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Units of surface tension are

it has no units
both of the above
distance
energy/unit area

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Hydraulics and Fluid Mechanics in ME
Low specific speed of a pump implies it is

Mixed flow pump
None of these
Centrifugal pump
Axial flow pump

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Hydraulics and Fluid Mechanics in ME
Which of the following pump is successfully used for lifting water to the turbines?

Centrifugal pump
Reciprocating pump
Air lift pump
Jet pump

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Hydraulics and Fluid Mechanics in ME
The optimum value of vane exit angle for a centrifugal pump impeller is

50-60°
10-15°
30-40°
20-25°

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Hydraulics and Fluid Mechanics in ME
A body floating in a liquid is said to be in neutral equilibrium, if its metacentre

Lies above its centre of gravity
Lies between the centre of buoyancy and centre of gravity
Coincides with its centre of gravity
Lies below its centre of gravity

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Hydraulics and Fluid Mechanics in ME
The maximum efficiency of transmission through a pipe is

0.7666
0.567
0.6667
0.5

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