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Process Equipment and Plant Design

Process Equipment and Plant Design
In case of a shell and tube heat exchanger, the effect of L/D on inside film heat transfer co-efficient (hi) vanishes after a Reynold number of

1000
10000
5000
3000

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Process Equipment and Plant Design
A minimum clearance of about __________ mm is maintained between the distillation column wall and the bubble cap.

76
95
19
38

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Process Equipment and Plant Design
Diameter of bubble caps used in high pressure columns is __________ as compared to that used in identical vacuum columns.

Less
Either A or B; no generalisation can be made
Same
More

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Process Equipment and Plant Design
A cylindrical storage tank can have a self supported conical roof,

If its diameter is less than 15-20metres
If the thickness of the roof is more than that of the cylindrical shell
If its diameter is more than 50 meters
Irrespective of its diameter

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Process Equipment and Plant Design
The ratio of tube length to shell diameter in case of liquid shell and tube heat exchanger ranges from

3 to 5
6 to 12
2 to 3
4 to 8

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Process Equipment and Plant Design
Which of the following is used to set the diameter of the distillation column?

Allowable vapour velocity
Number of theorectical plates
Static submergence
Length of straight rectangular weir on cross-flow tray

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