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Fluid Mechanics

Fluid Mechanics
Which of the following produces maximum pressure difference for transportation of gases?

Vaccum pumps
Fans
Blowers
Compressors

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Fluid Mechanics
Which of the following must be followed by the flow of a fluid (real or ideal)? (I) Newton's law of viscosity. (II) Newton's second law of motion. (III) The continuity equation. (IV) Velocity of boundary layer must be zero relative to boundary. (V) Fluid cannot penetrate a boundary.

II, IV, V
I, II, III
II, III, V
I, II, V

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Fluid Mechanics
Priming of a centrifugal pump is done to

None of these
Avoid chances of separation inside the impeller
Develop effective pressure rise by the pump
Increase the mass flow rate of fluid

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Fluid Mechanics
Capillary rise of mercury in a small diameter tube is proportional to (where, d = diameter of the tube, σ = surface tension of mercury)

L/σ
1/d
Σ
D

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

Reynold
Weber
Froude
Mach

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Fluid Mechanics
Curve III in the above diagram represents a/an

None of these
Dilatent fluid
Pseudo plastic fluid
Ideal plastic

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