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Hydraulics & Fluid Mechanics

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

specific mass
specific density
specific gravity
specific weight

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Hydraulics & Fluid Mechanics
The units of viscosity are

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

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Hydraulics & Fluid Mechanics
Mercury is often used in barometer because

its vapour pressure is so low that it may be neglected
both (B) and (C)
it is the best liquid
the height of barometer will be less

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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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Hydraulics & Fluid Mechanics
Ay between two stream lines represents

discharge
head
velocity
pressure

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Hydraulics & Fluid Mechanics
The continuity equation pi V,A,= p2V2A2 is based on the following assumption regarding flow of fluid (where pi and p2 are mass densities.)

frictionless flow
uniform flow
steady flow
incompressible flow

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