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Fluid Mechanics

Fluid Mechanics
Reynolds number for flow of water at room temperature through 2 cm dia pipe at an average velocity of 5 cm/sec is around

100
2000
10
1000

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Fluid Mechanics
Reciprocating pumps compared to centrifugal pumps

Deliver liquid at uniform pressure
Can be operated with delivery valve closed
Can handle slurries more efficiently
Are not subject to air binding

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Fluid Mechanics
The ratio of inertial forces to viscous forces is called the __________ number.

Mach
Weber
Reynold
Froude

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Fluid Mechanics
The unit of velocity head is

ft-lb/sec
ft-lbf/lb
ft-lbf/sec
ft-lb/ft³

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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)

μ²
1/μ
μ
1/μ²

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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.

1
20363
20090
5.5

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MORE MCQ ON Fluid Mechanics

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