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FLUID MECHANICS

Fluid Mechanics
Foot valves are provided in the suction line of a centrifugal pump to

Control the liquid discharge
Remove the contaminant present in the liquid
Avoid priming, every time we start the pump
Minimise the fluctuation in discharge

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Fluid Mechanics
Pumping of a corrosive liquid is generally preferred to be done by a __________ pump, as it can be made of a variety of materials including plastics.

Positive displacement
Sump
Piston
Gear

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Fluid Mechanics
Lower BWG means __________ of the tube.

Lower cross-section
Outer diameter
Inner diameter
Lower thickness

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Fluid Mechanics
In magnetic flow meters, voltage generation is

Due to the motion of conducting fluid through an externally generated uniform field
Neither A nor B
Proportional to the fluid velocity
Both A and B

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Fluid Mechanics
Net positive suction head (NPSH) of a centrifugal pump must be

Greater than the vapour pressure of the liquid
Less than barometric pressure
Equal to the vapour pressure of the liquid
Less than the vapour pressure of the liquid

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