Process Equipment and Plant Design
For given number of passes, pitch & tube diameter, the maximum number of tubes that can be accommodated in a shell of tripled inside diameter will be __________ times.

Considerably less than 9
About 3
About 9
Considerably more than 9

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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

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

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