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Hydraulics & Fluid Mechanics

Hydraulics & Fluid Mechanics
Which of the following is demensionless

specific weight
specific gravity
specific speed
specific volume

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Hydraulics & Fluid Mechanics
The pressure in Pascals at a depth of 1 m below the free surface of a body of water will be equal to

981 PA
91 PA
1 PA
9810 PA

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

Pirani Gauge
ionisastion gauge
Bourdon tube
Micro-manometer

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Hydraulics & Fluid Mechanics
An open vessel of water is accelerated up an inclined plane. The free water surface will

make an angle in opposite direction to inclination of inclined plane
be horizontal
make an angle in direction of inclination of inclined plane
any one of above is possible

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Hydraulics & Fluid Mechanics
The resultant of all normal pressures acts

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

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

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

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