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Hydraulics & Fluid Mechanics

Hydraulics & Fluid Mechanics
THEE HORIZONTAL COMPONENT OF BUOYANT FORCE IS

ZERO
SAME AS BUOYANT FORCE
NEGLIGIBLE
None of these

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Hydraulics & Fluid Mechanics
A vertical rectangular plane surface is submerged in water such that its top and bottom surfaces are 1.5 m and 6.0 m res-pectively below the free surface. The position of center of pressure below the free surface will be at a distance of

4.6 M
4.2 M
4.0 M
4.8 M

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Hydraulics & Fluid Mechanics
Free surface of a liquid behaves like a sheet and tends to contract to smallest possible area due to the

force of cohesion
force of diffusion
force of adhesion
force of friction

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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
The density of water is 1000 kg/m3 at

0°K
4°C
0°C
20°C

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Hydraulics & Fluid Mechanics
To avoid vaporisation in the pipe line, the pipe line over the ridge is laid such that it is not more than

5.0 above the hydraulic gradient
10.0 m above the hydraulic gradient
2.4 m above the hydraulic gradient
6.4 m above the hydraulic gradient

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