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Process Equipment and Plant Design

Process Equipment and Plant Design
Larger depth of liquid on the trays of a distillation column

Leads to high tray efficiency
Results in higher pressure drop per tray
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

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

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Process Equipment and Plant Design
The distance between the top of the slots and the liquid surface when the static liquid is just ready to flow over the overflow weir is called

Static submergence
Skirt clearance
None of these
Downcomer liquid seal

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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

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

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Process Equipment and Plant Design
In a __________ rivetted joint, the number of rivets decreases from the innermost row to the outermost row.

Diamond
Zig-zag
Chain
None of these

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

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

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