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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Air vessels in reciprocating pump are used to

Save pump from cavitations
Smoothen flow
Reduce acceleration to minimum
Increase pump efficiency

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Hydraulics and Fluid Mechanics in ME
If a body floating in a liquid occupies a new position and remains at rest in this new position, when given a small angular displacement, the body is said to be in __________ equilibrium.

Neutral
Stable
None of these
Unstable

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Hydraulics and Fluid Mechanics in ME
The Reynold's number of a ship is __________ to its velocity and length.

Square root of velocity
Directly proportional
Inversely proportional
None of these

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Hydraulics and Fluid Mechanics in ME
A pipe of length more than double the diameter of orifice fitted externally or internally to the orifice is called a

Weir
Mouthpiece
Notch
Nozzle

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Hydraulics and Fluid Mechanics in ME
The runaway speed of a hydraulic turbine is the speed

Corresponding to maximum overload permissible
At which the turbine will run freely without load
At which there will be no damage to the runner
At full load

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Hydraulics and Fluid Mechanics in ME
A balloon lifting in air follows the following principle

law of gravitation
All of these
Archimedes principle
principle of buoyancy

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