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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The unit power developed by a turbine is (where P = Power developed by the turbine under a head of water (H).

P/ √H
P/ H
P/ H3/2
P/ H²

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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
Static head
Velocity head
Kinetic head

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Hydraulics and Fluid Mechanics in ME
The shear stress between the two liquid layers is __________ proportional to the distance between two layers.

Both A and B
Inversely
None of these
Directly

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Hydraulics and Fluid Mechanics in ME
An internal mouthpiece is said to be running free if the length of the mouthpiece is __________ the diameter of the orifice.

More than three times
Less than twice
More than twice
Less than three times

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Hydraulics and Fluid Mechanics in ME
A pressure of 25 m of head of water is equal to

2.5 kN/m2
2500 kN/m2
25 kN/m2
245 kN/m2

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Hydraulics and Fluid Mechanics in ME
By fitting an air vessel to the reciprocating pump, there is always a saving of work done and subsequently saving of power. The saving in case of a double acting reciprocating pump is

0.848
0.392
0.488
0.884

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