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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
A piece weighing 3 kg in air was found to weigh 2.5 kg when submerged in water. Its specific gravity is

1
6
7
5

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Hydraulics and Fluid Mechanics in ME
In an internal mouthpiece, if the jet after contraction does not touch the sides of the mouthpiece, then the mouthpiece is said to be

Running free
Partially running free
Partially running full
Running full

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Hydraulics and Fluid Mechanics in ME
During the opening of a valve in a pipe line, the flow is

Uniform
Unsteady
Laminar
Steady

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Hydraulics and Fluid Mechanics in ME
Froude's number is the ratio of inertia force to

Gravity force
Pressure force
Elastic force
Surface tension force

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Hydraulics and Fluid Mechanics in ME
An error of 1% in measuring head over the apex of the notch (H) will produce an error of _________ in discharge over a triangular notch.

0.02
0.01
0.025
0.015

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Hydraulics and Fluid Mechanics in ME
In centrifugal pumps, maximum efficiency is obtained when the blades are

Radial
Straight
Bent backward
Bent forward

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