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Hydraulics & Fluid Mechanics

Hydraulics & Fluid Mechanics
Which of the following instrument can be used for measuring speed of an aeroplane

rotameter
Venturimeter
pitot tube
Orifice plate

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Hydraulics & Fluid Mechanics
At the centre line of a pipe flowing under pressure where the velocity gradient is zero, the shear stress will be

negative value
could be any value
minimum
maximum

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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
gas law
Charle’s law

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

Micro-manometer
ionisastion gauge
Bourdon tube
Pirani Gauge

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Hydraulics & Fluid Mechanics
Coefficient of velocity for Borda’s mouth piece running full is

0.855
1.00
0.707
0.611

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Hydraulics & Fluid Mechanics
For a floating body to be in equilibrium

a righting couple should be formed
All of these
center of buoyancy and e.g. must lie on same vertical plane
meta center should be above e.g.

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