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Hydraulics & Fluid Mechanics

Hydraulics & Fluid Mechanics
In a Sutro weir, the discharge is proportional to (where H is head)

H1/2
H3/2
H
H5/2

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Hydraulics & Fluid Mechanics
The line of action of the buoyant force acts through the

centriod of the displaced volume of fluid
centroid of the volume of fluid vertically above the body
center of gravity of any submerged body
center of the volume of floating body

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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

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

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

unsteady flow
uniform flow
Steady flow
laminar flow

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Hydraulics & Fluid Mechanics
The position of center of pressure on a plane surface immersed vertically in a static mass of fluid is

always above the centroid of the area
at the centroid of the submerged area
None of these
always below the centroid of the area

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

Bourdon tube
ionisastion gauge
Pirani Gauge
Micro-manometer

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