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Hydraulics & Fluid Mechanics

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

H5/2
H3/2
H1/2
H

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

Bourdon tube
Micro-manometer
ionisastion gauge
Pirani Gauge

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Hydraulics & Fluid Mechanics
An object having 10 kg mass weighs 9.81kg on a spring balance. The value of ‘g’ at this place is

10m/sec²
10.2/m sec
9.81 m/sec²
9.75 m/sec²

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Hydraulics & Fluid Mechanics
The surface tension of mercury at normal temperature compared to that of water is

less
same
more
more or less depending on size of glass tube

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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

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

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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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