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Fluid Mechanics

Fluid Mechanics
Lower BWG means __________ of the tube.

Outer diameter
Lower cross-section
Inner diameter
Lower thickness

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Fluid Mechanics
Interstage coolers are provided in a multistage compressor to

Save power in compressing a given volume to a given pressure
Achieve the exact delivery pressure
None of these
Cool the delivered air

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Fluid Mechanics
Function of air vessel provided in a reciprocating pump is to

Increase the pump efficiency
Reduce discharge fluctuation
Avoid the necessity of priming
Reduce the danger of cavitation

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Fluid Mechanics
For laminar flow through a closed conduit

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

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Fluid Mechanics
The __________ pressure is measured by a static tube.

None of these
Dynamic
Static
Total

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Fluid Mechanics
A double acting reciprocating pump compared to a single acting pump (of almost same size working under same pressure levels) would give almost double

Discharge
Efficiency
None of these
Head

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