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Fluid Mechanics

Fluid Mechanics
Lower BWG means __________ of the tube.

Inner diameter
Lower cross-section
Lower thickness
Outer diameter

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Fluid Mechanics
Delivery of insufficient quantity of liquid by a pump may be caused by

All of these
Too high a lift
Low rpm
Air leak in the inlet

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Fluid Mechanics
A centrifugal pump used to pump water is used to pump an oil with specific gravity of 0.8 at the same rate. The power consumption will now

Decrease
Increase
Data insufficient to predict
Remain same

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Fluid Mechanics
What is the value of Fanning friction factor f ' for smooth pipe at NRe = 10⁶ approximately?

0.003
0.1
0.01
0.3

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Fluid Mechanics
The pressure drop per unit length of pipe incurred by a fluid 'X' flowing through pipe is Δp. If another fluid 'Y' having both the specific gravity & density just double of that of fluid 'X', flows through the same pipe at the same flow rate/average velocity, then the pressure drop in this case will be

Δp
Δp²
2Δp
Δp/2

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

Axial flow
Centrifugal
None of these
Mixed flow

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