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Hydraulics and Fluid Mechanics in ME

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

30-40°
10-15°
20-25°
50-60°

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Hydraulics and Fluid Mechanics in ME
Metacentric height is the distance between the metacentre and

center of pressure
center of buoyancy
water surface
center of gravity

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Hydraulics and Fluid Mechanics in ME
Water is _________ liquid.

None of these
A compressible
Both A and B
An incompressible

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Hydraulics and Fluid Mechanics in ME
The rise or depression of liquid in a tube due to surface tension will increase in size of tube will

Decrease
Remain unaffected
Increase
May increase or decrease depending on the characteristics of liquid

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Hydraulics and Fluid Mechanics in ME
The variation in the volume of a liquid with the variation of pressure is called its

Capillarity
Surface tension
Viscosity
Compressibility

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Hydraulics and Fluid Mechanics in ME
The discharge over a right angled notch is (where H = Height of liquid above the apex of notch)

(8/15) Cd. 2g. H
(8/15) Cd. 2g. H3/2
(8/15) Cd. 2g. H5/2
(8/15) Cd. 2g. H²

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