Process Equipment and Plant Design
A head comprises of straight flange section, corner torus, section and central dished section. Crown radius and knuckle radius in a head is related respectively to the

Central dished section and corner torus section
Straight flange section and corner torus section
Central dished section and straight flange section
Corner torus section and central dished section

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Process Equipment and Plant Design
Pick out the wrong statement about the design of seive plate column and the bubble cap column.

The downcomer design and the residence time in the downcomer is almost same for seive plate and bubble cap columns
Weir length for a bubble cap plate is the same as that for the seive plate
Weir height in case of a bubble cap plate ranges from 50 to 150 mm and is higher than the seive plate
Weir height for a bubble cap plate column is the same as that for a seive plate column

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