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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Water is _________ liquid.

A compressible
Both A and B
None of these
An incompressible

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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. This saving in case of a single acting reciprocating pump is

0.848
0.488
0.884
0.392

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Hydraulics and Fluid Mechanics in ME
The angle of contact in case of a liquid depends upon

both of die above
the nature of the liquid and the solid
the material which exists above the free surface of the liquid
any one of the above

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Hydraulics and Fluid Mechanics in ME
The depth of the bucket for a Pelton wheel is generally _________ the diameter of jet.

Equal to
1.2 times
1.8 times
Double

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Hydraulics and Fluid Mechanics in ME
The centre of pressure for a vertically immersed surface lies at a distance equal to __________ the centre of gravity.

Ax̅ / IG above
IG / Ax̅ above
IG / Ax̅ below
Ax̅ / IG below

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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

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

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