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Fluid Mechanics

Fluid Mechanics
__________ pump is the most suitable device for discharging a liquid against a pressure of ≥ 1500 kgf/cm².

Centrifugal
Vane
Piston
Plunger

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Fluid Mechanics
Priming of a centrifugal pump is done to

Avoid chances of separation inside the impeller
None of these
Increase the mass flow rate of fluid
Develop effective pressure rise by the pump

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Fluid Mechanics
Power number is the ratio of

Drag stress to inertial stress
Inertial stress to drag stress
Gravitational stress to drag stress
Inertial stress to gravitational stress

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Fluid Mechanics
Unit of mass velocity is

Kg/m³. hr
Kg/hr
Kg/m². hr
Kg/m²

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Fluid Mechanics
The variable required to be known in correlations used for estimating the horse power of a centrifugal gas compressor and hence its cost are P. Inlet pressure Q. Compressor rpm R. Delivery pressure S. Volumetric flow rate at inlet.

P and R
P, Q and R
P, Rand S
R and S

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Fluid Mechanics
Cp/Cv is termed as

Mach number
Prandtl number
Adiabatic constant
Weber number

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