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Process Equipment and Plant Design

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

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

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Process Equipment and Plant Design
In actual operation of distillation column, the vapour is not distributed uniformly among the bubble caps, primarily because of the

Liquid gradient on the tray
Lower skirt clearance
Small downcomer liquid seal
Lower static submergence

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Process Equipment and Plant Design
Optimum economic pipe diameter for fluid flow is determined by the

None of these
Total cost considerations (pumping cost plus fixed cost of the pipe)
Viscosity of the fluid
Density of the fluid

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Process Equipment and Plant Design
The equivalent diameter for fluid flow through a channel of constant non-circular cross section of area 'A' is given by (where, P = perimeter of the channel in contact with the fluid)

A/P
4 A/P
4 P/A
√A

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Process Equipment and Plant Design
Heat transfer co-efficient for a horizontal condenser as compared to a vertical condenser operating under similar conditions is

Same
About 0.33 times
About 3 times
Less

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Process Equipment and Plant Design
Lap joints are preferred for plates having thickness __________ mm.

> 5
> 3
< 12.5
43961

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