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Fluid Mechanics

Fluid Mechanics
In Newton's law range, the drag co-efficient for the motion of spherical particle in a stationary fluid is

0.44
44
4.4
0.044

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

Froude
Mach
Reynold
Euler

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Fluid Mechanics
A centrifugal pump is called a turbine pump, if it is having a

Turbine type impeller
Rotating vaned volute
None of these
Vaned diffusion casing

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Fluid Mechanics
The equivalent diameter for flow through a rectangular duct of width B and height H is

4HB/(H + B)
HB/2(H + B)
HB/(H + B)
2HB/(H + B)

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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/μ²
μ
1/μ

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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

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

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