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Hydraulics and Fluid Mechanics in ME

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

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

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Hydraulics and Fluid Mechanics in ME
In an external mouthpiece, the absolute pressure head at vena contracta is __________ the atmospheric pressure head by an amount equal to 0.89 times the height of the liquid, above the vena contracta.

Less than
More than
None of these
Equal to

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Hydraulics and Fluid Mechanics in ME
When a cylindrical vessel containing liquid is resolved, the surface of the liquid takes the shape of

A paraboloid
A triangle
An ellipse
None of these

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Hydraulics and Fluid Mechanics in ME
A Pelton wheel is

Inward flow impulse turbine
Outward flow impulse turbine
Tangential flow impulse turbine
Inward flow reaction turbine

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Hydraulics and Fluid Mechanics in ME
In series-pipe problems

the discharge through each pipe is added to obtain total discharge
a trial solution is not necessary
the discharge is same through each pipe
the head loss is same through each pipe

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Hydraulics and Fluid Mechanics in ME
The atmospheric pressure at sea level is

10.3 m of water
All of these
760 mm of mercury
103 kN/m2

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