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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Equation of continuity is based on the principle of conservation of

mass
None of these
momentum
energy

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Hydraulics and Fluid Mechanics in ME
The cavitation in a hydraulic machine

All of these
Causes noise and vibration of various parts
Causes sudden drop in power output and efficiency
Reduces the discharge of a turbine

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Hydraulics and Fluid Mechanics in ME
Working principle of dead weight pressure gauge tester is based on

Dalton’s law of partial pressure
Newton’s law of viscosity
Avogadro’s hypothesis
Pascal’s law

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Hydraulics and Fluid Mechanics in ME
The number of buckets on the periphery of a Pelton wheel is given by

(D/2d) + 15
(D/2d) + 5
(D/2d) + 20
(D/2d) + 10

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Hydraulics and Fluid Mechanics in ME
The major loss of energy in long pipes is due to

sudden enlargement
friction
gradual contraction or enlargement
sudden contraction

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Hydraulics and Fluid Mechanics in ME
The pressure of liquid at throat in a Venturimeter is __________ than that at inlet.

None of these
Same
Lower
Higher

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