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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
In a centrifugal pump, the regulating valve is provided on the

Delivery pipe
Casing
Suction pipe
Impeller

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Hydraulics and Fluid Mechanics in ME
Saving of work done and power by fitting an air vessel to double acting reciprocating pump is of the order of

0.392
0.848
0.688
0.492

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Hydraulics and Fluid Mechanics in ME
The time oscillation of a floating body with increase in meatcentric height will be

Lower
Higher
Lower/higher depending on weight of body
Same

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Hydraulics and Fluid Mechanics in ME
When a piping system is made up primarily of friction head and very little of vertical lift, then pump characteristics should be

Nearly horizontal
Steep
First rise and then fall
Horizontal

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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
Which of the following instrument can be used for measuring speed of a submarine moving in deep sea

Venturimeter
pitot tube
rotameter
hot wire anemometer

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