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Process Equipment and Plant Design

Process Equipment and Plant Design
In a multiple effect evaporator system having 'n' effects, the amount of water evaporated per unit surface area in approximately equal to __________ times that in a single effect.

1.5 nth
0.5 nth
nth
(1/n)th

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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

∞
1
20.8
2

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Process Equipment and Plant Design
Bubble cap plate column is

A continuous contactor
A finite stage contactor
A differential stage contactor
Used only for distillation, not for absorption

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Process Equipment and Plant Design
The most common standard size of bubble caps used in industrial operation is

1" dia cap with 0.5" dia riser
6" dia cap with 4" dia riser
4" dia cap with 8" dia riser
8" dia cap with 1" dia riser

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Process Equipment and Plant Design
The minimum shell thickness for tank ≤ 15 metres diameter is limited to __________ mm, for reasons of elastic stability.

15
10
5
2

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Process Equipment and Plant Design
What is the slope of the operating line in the stripping section of a distillation column?

< 1
> 1
?

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