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Hydraulics & Fluid Mechanics

Hydraulics & Fluid Mechanics
Normal depth in open channel flow is the depth of flow corresponding to

Steady flow
unsteady flow
uniform flow
laminar flow

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Hydraulics & Fluid Mechanics
Surface energy per unit area of a surface is numerically equal to

force of adhesion
atmospheric pressure
surface tension
force of cohesion

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Hydraulics & Fluid Mechanics
For a floating body to be in equilibrium

meta center should be above e.g.
a righting couple should be formed
All of these
center of buoyancy and e.g. must lie on same vertical plane

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Hydraulics & Fluid Mechanics
Mercury is often used in barometer because

the height of barometer will be less
its vapour pressure is so low that it may be neglected
both (B) and (C)
it is the best liquid

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Hydraulics & Fluid Mechanics
The total pressure force on a plane area is equal to the area multiplied by the intensity of pressure at the centriod, if

All of these
the area is vertical
the area is inclined
the area is horizontal

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Hydraulics & Fluid Mechanics
THE THEORETICAL VALUE OF COEFFICIENT OF CONTRACTION OF A SHARP EDGED ORIFICE IS

0.86
0.611
0.95
1.01

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