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Hydraulics & Fluid Mechanics

Hydraulics & Fluid Mechanics
Pressure of the order of 10''' torr can be measured by

Bourdon tube
ionisastion gauge
Micro-manometer
Pirani Gauge

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Hydraulics & Fluid Mechanics
According to the principle of buoyancy a body totally or partially immersed in a fluid will be lifted up by a force equal to

less than the weight of the body
weight of the fluid displaced by the body
more than the weight of the body
the weight of the body

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Hydraulics & Fluid Mechanics
THEE HORIZONTAL COMPONENT OF BUOYANT FORCE IS

None of these
ZERO
SAME AS BUOYANT FORCE
NEGLIGIBLE

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

surface tension
force of cohesion
force of adhesion
atmospheric pressure

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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 friction
force of cohesion
force of diffusion
force of adhesion

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Hydraulics & Fluid Mechanics
The distance from pipe boundary, at which the turbulent shear stress is one-third die wall shear stress, is (where R is the radius of pipe)

2/3 R
1/3 R
3/4 R
1/2 R

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