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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The speed of an imaginary turbine, identical with the given turbine, which will develop a unit power under a unit head, is known as

Unit speed
None of these
Specific speed
Normal speed

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Hydraulics and Fluid Mechanics in ME
Which of the following pump is successfully used for lifting water from deep wells?

Reciprocating pump
Air lift pump
Centrifugal pump
Jet pump

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Hydraulics and Fluid Mechanics in ME
According to fan laws, for fans having constant wheel diameter, the air or gas capacity varies

Directly as fan speed
Cube of fan speed
Square of fan speed
Square root of fan speed

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Hydraulics and Fluid Mechanics in ME
The increase in pressure at the outer edge of a drum of radius (r) completely filled up with liquid of density (ρ) and rotating at (ω) rad/s is

2ρ ω2 r2
ρ ω2 r2/4
ρ ω2 r2/2
ρ ω2 r2

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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.

None of these
More than
Less than
Equal to

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Hydraulics and Fluid Mechanics in ME
The unit discharge through the turbine is

Q/H3/2
Q/H²
Q/√H
Q/H

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