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Process Equipment and Plant Design

Process Equipment and Plant Design
The difficulty of liquid distribution in packed towers is accentuated, when the ratio of tower diameter to packing diameter is

< 30
> 20 < 50
> 7 < 15
< 7

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Process Equipment and Plant Design
A pipe is generally made of circular cross-section, because a circular cross-section has the

Lowest surface area requirement for a given volume
Both A & B
Higher structural strength
None of these

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Process Equipment and Plant Design
With increase in gas flow rate to fabric surface area ratio (Nm³/hr/m² fabric surface area), the size & the cost of a bag filter

Decreases
None of these
Increases
Remain unaffected

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Process Equipment and Plant Design
In a shell and tube heat exchanger, the overall heat transfer co-efficient is proportional to the tube side (volumetric flow rate)0.8. This is valid, only when the ratio of the tube side film resistance to the total resistance is almost equal to

∞
2
20.8
1

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Process Equipment and Plant Design
In a shell and tube heat exchanger, the shortest centre to centre distance between the adjacent tubes is

None of these
Called tube clearance
Always less than the diameter of the tube
Called tube pitch

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Process Equipment and Plant Design
For a 25 mm hole drilled in plates to be rivetted, the shank diameter of the rivet should be __________ mm.

26
27
25
23

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