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Hydraulics & Fluid Mechanics

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
For a floating body to be in equilibrium

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

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Hydraulics & Fluid Mechanics
An object having 10 kg mass weighs 9.81kg on a spring balance. The value of ‘g’ at this place is

9.75 m/sec²
10m/sec²
9.81 m/sec²
10.2/m sec

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Hydraulics & Fluid Mechanics
Flow of water in a pipe about 3 meters in diameter can be measured by

rotameter
pitot tube
venturi
orifice plate

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Hydraulics & Fluid Mechanics
Free surface of a liquid tends to contract to the smallest possible area due to force of

cohesion
friction
surface tension
viscosity

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Hydraulics & Fluid Mechanics
In which of the following the friction drag is generally larger than pressure drag?

a cylinder
a sphere
a circular disc or plate held normal to flow
an airfoil

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