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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Which of the following is an example of laminar flow?

Underground flow
All of these
Flow past tiny bodies
Flow of oil in measuring instruments

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

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

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Hydraulics and Fluid Mechanics in ME
The water pressure per metre length on a vertical masonry wall of dam is (where w = Specific weight of the liquid, and H = Height of the liquid)

wH/2
wH
wH2/4
wH2/2

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Hydraulics and Fluid Mechanics in ME
With an increase in size of tube, the rise or depression of liquid in the tube due to surface tension will

Depend upon the characteristics of liquid
Decrease
Increase
Remain unchanged

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Hydraulics and Fluid Mechanics in ME
The velocity through a channel of circular section will be maximum when the depth of water is __________ the diameter of the circular channel.

0.34 times
0.81 times
0.95 times
0.67 times

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Hydraulics and Fluid Mechanics in ME
The total energy of each particle at various places in the case of perfect incompressible fluid flowing in continuous stream

Keeps on decreasing
Keeps on increasing
May increase/decrease
Remain constant

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