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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The pressure of air __________ with the increase of height from the surface of the earth.

Increases
None of these
Does not change
Decreases

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Hydraulics and Fluid Mechanics in ME
Which of the following is used to measure the discharge ?

current meter
venturimeter
pitot tube
hotwire anemometer

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Hydraulics and Fluid Mechanics in ME
The unit of surface tension is

N/m3
N/m
N/m2
N-m

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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

0.884
0.488
0.848
0.392

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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
0.025
0.01
0.015

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Hydraulics and Fluid Mechanics in ME
The loss of pressure head in case of laminar flow is proportional to

Velocity
(Velocity)3
(Velocity)4
(Velocity)2

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