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Fluid Mechanics

Fluid Mechanics
In power law, ζ = A (du/dy)² + B , then the fluid is

Rheopectic
Thixotropic
Newtonian
Dilatant

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Fluid Mechanics
Interstage coolers are provided in a multistage compressor to

Cool the delivered air
None of these
Save power in compressing a given volume to a given pressure
Achieve the exact delivery pressure

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Fluid Mechanics
In which type of fluid flow, the velocity of flow of fluid changes from point to point in the fluid at any instant?

Non-uniform
Unsteady
Turbulent
Rotational

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Fluid Mechanics
Reynolds number for water flow through a tube of I.D. 5 cm is 1500. If a liquid of 5 centipoise viscosity and 0.8 specific gravity flows in the same pipe at the same velocity, then the pressure drop will

Decrease
Data insufficient to predict pressure drop
Increase
Remain same

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

44
4.4
0.44
0.044

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Fluid Mechanics
The equivalent diameter for pressure drop calculation for a duct of square cross-section is given by(where, x = each side of the square duct)

πx
x/2
x
2x

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