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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Equation of continuity is based on the principle of conservation of

energy
None of these
momentum
mass

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Hydraulics and Fluid Mechanics in ME
The loss of head due to friction in a pipe of uniform diameter in which a viscous flow is taking place, is (where RN = Reynold number)

4/RN
1/RN
64/RN
16/RN

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Hydraulics and Fluid Mechanics in ME
Which of the following statement is correct as regard to water wheels?

They give constant efficiency, even if the discharge is not constant
All of these
They are suitable even for low water heads
They have slow speeds

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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
Axial flow pump
Centrifugal pump

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Hydraulics and Fluid Mechanics in ME
A centrifugal pump will start delivering liquid only when the pressure rise in the impeller is equal to the

Manometric head
Velocity head
Kinetic head
Static head

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Hydraulics and Fluid Mechanics in ME
In an external mouthpiece, the absolute pressure head at vena contracta is __________ the atmospheric pressure head by an amount equal to 0.89 times the height of the liquid, above the vena contracta.

Less than
Equal to
None of these
More than

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