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Fluid Mechanics

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

Reciprocating
Diaphragm
Centrifugal
Gear

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Fluid Mechanics
__________ pump is the most suitable device for discharging a liquid against a pressure of ≥ 1500 kgf/cm².

Plunger
Piston
Centrifugal
Vane

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Fluid Mechanics
What causes cavitation in centrifugal pump?

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

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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
Control the rate of discharge
Protect the pump against developing excessive pressure

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Fluid Mechanics
For laminar flow through a closed conduit

Vmax = 2Vav
Vmax = 1.5Vav
Vmax = 0.5Vav
Vmax = Vav

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Fluid Mechanics
Reynolds number for flow of water at room temperature through 2 cm dia pipe at an average velocity of 5 cm/sec is around

1000
10
2000
100

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