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Fluid Mechanics

Fluid Mechanics
Liquid delivery by centrifugal pump starts, only when the head developed by it is equal to the __________ head.

Friction
Static
Manometric
Total

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Fluid Mechanics
Water hammer is caused, when water flowing in a pipe is suddenly brought to rest by closing the valve. The extent of pressure thus produced due to water hammer depends on the

Fluid velocity in the pipe
Pipe length
Time taken to close the valve
All of these

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Fluid Mechanics
Dimension of kinematic viscosity is

MLT⁻¹
L² . T⁻¹
L² . T⁻²
L²T

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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)

μ
μ²
1/μ²
1/μ

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

Weber
Euler
Froude
Mach

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Fluid Mechanics
A lubricant 100 times more viscous than water would have a viscosity (in Pa.s)

0.1
10
0.01
1

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