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Hydraulics and Fluid Mechanics in ME

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

Jet pump
Centrifugal pump
Air lift pump
Reciprocating pump

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Hydraulics and Fluid Mechanics in ME
Water is _________ liquid.

An incompressible
A compressible
Both A and B
None of these

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

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Hydraulics and Fluid Mechanics in ME
According to fan laws, at constant pressure, the speed capacity and power vary

Inversely as density
Directly as the air or gas density
Inversely as square root of density
As square of density

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Hydraulics and Fluid Mechanics in ME
In order to avoid tendency of separation at throat in a Venturimeter, the ratio of the diameter at throat to the diameter of pipe should be

1/3 to 1/2
1/16 to 1/8
1/4 to 1/3
1/8 to 1/4

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Hydraulics and Fluid Mechanics in ME
According to Darcy's formula, the loss of head due to friction in the pipe is (where f = Darcy's coefficient, l = Length of pipe, v = Velocity of liquid in pipe, and d = Diameter of pipe)

flv²/2gd
3flv²/2gd
flv²/gd
4flv²/2gd

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