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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The discharge through a reaction turbine ___ with the increase in unit speed.

Increases
Decreases
Remain same
None of the listed here

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Hydraulics and Fluid Mechanics in ME
Center of buoyancy is the

center of pressure of displaced volume
centroid of the displaced volume of fluid
does not exist
e.g. of floating body

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Hydraulics and Fluid Mechanics in ME
The power transmitted through the pipe is maximum when the head lost due to friction is equal to

Two-third of the total supply head
One-half of the total supply head
One-third of the total supply head
One-fourth of the total supply head

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Hydraulics and Fluid Mechanics in ME
The discharge over a triangular notch is

Inversely proportional to H3/2
Directly proportional to H5/2
Directly proportional to H3/2
Inversely proportional to H5/2

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Hydraulics and Fluid Mechanics in ME
Air vessels in reciprocating pump are used to

Smoothen flow
Save pump from cavitations
Reduce acceleration to minimum
Increase pump efficiency

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Hydraulics and Fluid Mechanics in ME
The ratio of actual work available at the turbine to the energy imparted to the wheel is known as ________ efficiency.

Overall
Hydraulic
None of these
Mechanical

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