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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
In a Sutro weir, the discharge is proportional to (where H is head)

H1/2
H3/2
H5/2
H

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

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

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Hydraulics & Fluid Mechanics
When a body floating in a liquid, is displaced slightly, it oscillates about

center of pressure
center of buoyancy
e.g. of body
metacentre

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

atmospheric pressure
force of cohesion
force of adhesion
surface tension

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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

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

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