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Process Equipment and Plant Design

Process Equipment and Plant Design
In case of a shell and tube heat exchanger, the minimum shell thickness for carbon steel (inclusive of corrosion allowance) depends on shell diameter and is in the range of __________ mm.

44183
44058
43962
43895

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Process Equipment and Plant Design
Le/D for a Tee (used as elbow, entering branch) would be

Around 90
More than that for Tee (used as elbow, entering run)
Less than that for Tee (used as elbow, entering run)
Both B and C

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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
∞
2
20.8

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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.

0.5 nth
1.5 nth
(1/n)th
nth

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Process Equipment and Plant Design
Bubble cap plate column is

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

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Process Equipment and Plant Design
The optimum size ratio for two mixed reactors in series depends on the kinetics of the reaction and the conversion level. For reaction orders more than one, the

Larger reactor should come first
Smaller reactor should come first
Equal sized reactors are the best
None of these

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