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Hydraulics & Fluid Mechanics

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

Bourdon tube
Pirani Gauge
Micro-manometer
ionisastion gauge

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

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Hydraulics & Fluid Mechanics
The units of viscosity are

newton-sec/metre2
newton-sec/metre
kg sec/metre
metre2/se

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

H3/2
H
H1/2
H5/2

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Hydraulics & Fluid Mechanics
Two pipe systems are said to be equivalent when

friction factor and length are same in two systems
length and diameter are same in two systems
length of pipe and discharge are same in two systems
head loss and discharge are same in two systems

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Hydraulics & Fluid Mechanics
Specific weight of sea water is more that of pure water because it contains

suspended matter
dissolved air
dissolved salt
All of these

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