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Hydraulics and Fluid Mechanics in ME

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

An ellipse
None of these
A paraboloid
A triangle

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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
wH2/4
wH2/2
wH/2

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Hydraulics and Fluid Mechanics in ME
The absolute pressure is equal to

Gauge pressure + atmospheric pressure
Gauge pressure - vacuum pressure
Atmospheric pressure - gauge pressure
Gauge pressure - atmospheric pressure

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Hydraulics and Fluid Mechanics in ME
In an immersed body, centre of pressure is

Below be centre of gravity
Could be above or below e.g. depending on density of body and liquid
At the centre of gravity
Above the centre of gravity

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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

rotameter
Venturimeter
hot wire anemometer
pitot tube

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Hydraulics and Fluid Mechanics in ME
Head developed by a centrifugal pump is

Proportional to diameter and speed of impeller
Proportional to speed of impeller
None of these
Proportional to diameter of impeller

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