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Fluid Mechanics

Fluid Mechanics
A fluid is pumped at the rate of 10 lb/sec to a height of 55 ft. The horse power required is __________ hp.

5.5
1
20363
20090

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

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Fluid Mechanics
Which of the following is the most common pump for pumping either raw sewage or sludge?

Electromagnetic pump
Reciprocating pump
Gear pump
Centrifugal pump

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Fluid Mechanics
Two dimensional stream function

Is constant along an equipotential surface
Relates velocity and pressure
Is constant along a stream line
None of these

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Fluid Mechanics
As per Newton's law of viscosity, the shear stress for a given rate of angular deformation of fluid is proportional to(where, μ = fluid viscosity)

1/μ²
μ²
1/μ
μ

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Fluid Mechanics
Rise of liquid in a capillary tube is due to

Cohesion
Both A & B
Neither A nor B
Adhesion

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