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Fluid Mechanics

Fluid Mechanics
Slurries can be most conveniently pumped by a __________ pump.

Centrifugal
Gear
Screw
Reciprocating

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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
Applying a pressure drop across a capillary results in a volumetric flow rate 'Q' under laminar flow conditions. The flow rate for the same pressure drop, in a capillary of the same length but half the radius is

Q/2
Q/4
Q/8
Q/16

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Fluid Mechanics
The simple pitot tube measures the __________ pressure.

Total
None of these
Dynamic
Static

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Fluid Mechanics
For an incompressible fluid, the bulk modulus of elasticity is

∞ N/m²
5 kg/m³
0 N/m
1 N

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Fluid Mechanics
The most economical flow control valve for use with large diameter pipes is a

Butterfly valve
Needle valve
None of these
Globe valve

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