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Process Equipment and Plant Design

Process Equipment and Plant Design
Reflux ratio variation in a distillation column is between

Minimum and infinity
Zero and one
None of these
Zero and infinity

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Process Equipment and Plant Design
In distillation columns, bubble caps are held in place over trays by

A hold down bar
Bolts
Rivets
Both B and C

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Process Equipment and Plant Design
Tube side pressure drop in a 1-2 heat exchanger (for turbulent flow of fluids through the tubes) is about __________ times, that in a 1-1 heat exchanger having the same size & number of tubes and operated at the same liquid flow rate.

4
2
8
1/2

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Process Equipment and Plant Design
In a shell and tube heat exchanger, tube side __________ of the mass velocity.

Heat transfer co-efficient is proportional to 0.8th power
Pressure drop is proportional to the square
Neither A nor B
Both A & B

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Process Equipment and Plant Design
Ratio of tube length to shell diameter for a shell and tube heat exchanger is

Both B & C
8 : 1 to 12 : 1 for both liquid-liquid and gas-gas heat exchangers
4 : 1 to 8 : 1 for liquid-liquid exchanger
< 4 : 1 for gas-gas exchangers

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Process Equipment and Plant Design
In case of plain carbon steel, butt welded joints are used for shell plate thickness ≤ __________ cms. .

3.8
0.5
1.2
6.8

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