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Fluid Mechanics

Fluid Mechanics
A hydraulic ram acts as a/an __________ pump.

Impulse
Reciprocating
Centrifugal
Parallel cylinder

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Fluid Mechanics
The peripherial velocity at inlet of a centrifugal pump having inlet diameter of 25 cms and rotating at 950 rpm is __________ m/sec.

12.4
736.4
1.8
186.2

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Fluid Mechanics
Function of air vessel provided in a reciprocating pump is to

Reduce discharge fluctuation
Increase the pump efficiency
Reduce the danger of cavitation
Avoid the necessity of priming

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Fluid Mechanics
Water flow rate in a pipe of 3.5 metres diameter can be most economically and conveniently measured by a/an

Rotameter
Orificemeter
Pitot tube
Venturimeter

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Fluid Mechanics
Mass velocity in case of steady flow and through a constant cross-section conduit is independent of the

Pressure
Neither A nor B
Temperature
Both A & B

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Fluid Mechanics
Net positive suction head (NPSH) of a centrifugal pump must be

Less than the vapour pressure of the liquid
Greater than the vapour pressure of the liquid
Less than barometric pressure
Equal to the vapour pressure of the liquid

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