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Fluid Mechanics

Fluid Mechanics
Bernoulli's equation is not applicable, when the flow is

Irrotational
Viscous
Incompressible
All of these

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Fluid Mechanics
For Laminar flow through a packed bed, the pressure drop is proportional to (Vs is the superficial liquid velocity and Dp is the particle diameter)

Vs²/Dp²
Vs²/Dp³
Vs/Dp³
Vs/Dp²

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Fluid Mechanics
What causes cavitation in centrifugal pump?

High suction velocity
High suction pressure
Low suction pressure
Low barometric pressure

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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.

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

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Fluid Mechanics
The capacity of an accumulator is the maximum

Discharge which it can deliver
Liquid which it can store
Energy which it can store
None of these

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Fluid Mechanics
Low specific speed of a pump implies that, it is a/an __________ pump.

Centrifugal
Mixed flow
None of these
Axial flow

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