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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
Specific speed
None of these
Normal speed

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Hydraulics and Fluid Mechanics in ME
The tendency of a liquid surface to contract is due to the following property

surface tension
viscosity
cohesion
adhesion

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Hydraulics and Fluid Mechanics in ME
For very high discharge at low pressure such as for flood control and irrigation applications, following type of pump is preferred

Axial flow
Mixed flow
Reciprocating
Centrifugal

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Hydraulics and Fluid Mechanics in ME
The most economical section of a trapezoidal channel is one which has hydraulic mean depth equal to

1/2 × depth
1/4 × (depth + breadth)
1/2 × sloping side
1/2 × breadth

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

Zero
Maximum
Minimum
None of these

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Hydraulics and Fluid Mechanics in ME
A point, in a compressible flow where the velocity of fluid is zero, is called

Vena contracta
None of the listed here
Stagnation point
Critical point

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