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Fluid Mechanics

Fluid Mechanics
For the transfer of solution of thick slurry, the pump used is a __________ pump.

Centrifugal
Reciprocating
Gear
Diaphragm

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Fluid Mechanics
The distance between metacentre and __________ is called metacentric height.

Water surface
Centre of buoyancy
None of these
Centre of gravity

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Fluid Mechanics
For water, when the pressure increases, the viscosity

Also increases
First decreases, and then increases
Decreases
Remains constant

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Fluid Mechanics
Purpose of relief valve in a reciprocating pump is to

Reduce the discharge pressure
Facilitate unidirectional flow of liquid
Protect the pump against developing excessive pressure
Control the rate of discharge

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Fluid Mechanics
Which of the following is used for very accurate measurement of flow of gas at low velocity?

Segmental orificemeter
Hot wire annemometer
Rotameter
Pitot tube

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

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