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Hydraulics & Fluid Mechanics

Hydraulics & Fluid Mechanics
Operation of McLeod gauge used for low pressure measurement is based on the principle of

Pascal’s law
Boyle’s law
Charle’s law
gas law

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Hydraulics & Fluid Mechanics
The resultant of all normal pressures acts

at metacentre
at center of pressure
vertically upwards
at e.g. of body

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Hydraulics & Fluid Mechanics
Ay between two stream lines represents

pressure
head
velocity
discharge

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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

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

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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 cohesion
force of diffusion
force of adhesion
force of friction

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Hydraulics & Fluid Mechanics
If 850 kg liquid occupies volume of one cubic meter, men 0.85 represents its

specific weight
specific mass
specific gravity
specific density

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