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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°
20-25°
50-60°
10-15°

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Hydraulics and Fluid Mechanics in ME
The discharge in an open channel corresponding to critical depth is

Zero
None of these
Maximum
Minimum

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Hydraulics and Fluid Mechanics in ME
A large Reynold number is indication of

Laminar flow
Highly turbulent flow
Steady flow
Smooth and streamline flow

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Hydraulics and Fluid Mechanics in ME
The value of friction factor ‘f’ for smooth pipes for Reynolds number 106 is approximately equal to

0.1
0.0001
0.01
0.001

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Hydraulics and Fluid Mechanics in ME
Multistage centrifugal pumps are used to obtain

Pumping of viscous fluids
High head and high discharge
High discharge
High head

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Hydraulics and Fluid Mechanics in ME
A jet of water is striking at the centre of a curved vane moving with a uniform velocity in the direction of jet. For the maximum efficiency, the vane velocity is ________ of the jet velocity

One-half
Two-third
One-third
Three-fourth

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