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Process Equipment and Plant Design

Process Equipment and Plant Design
Thin spherical shells subjected to internal pressure, develop __________ stresses.

Neither A nor B
Radial
Circumferential
Both A & B

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Process Equipment and Plant Design
In a pressure vessel containing multiple openings of various dimensions at different parts, stress concentration at the edges of the opening is maximum which becomes negligibly small beyond the area covered by __________ times the hole diameter.

Two
Ten
Twenty
Five

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Process Equipment and Plant Design
Factor of safety (i.e., overdesign factor) in heat transfer equipments is about __________ percent more than the actual/theoretical design factor.

30-35
35-40
15-20
43961

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Process Equipment and Plant Design
Generally, as the length of the liquid path on a tray is increased beyond 5 ft, the overall column efficiency

May increase or decrease depending upon the plate spacing
Increases
Remains same
Decreases

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Process Equipment and Plant Design
The average velocity in the tubes of a 1-4 heat exchanger is __________ times that in 1-1 heat exchanger having the same size & number of tubes and operated at same liquid flow rate.

43832
43834
2
4

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Process Equipment and Plant Design
The circumferential (hoop) stress in a thin walled cylinderical vessel under internal pressure is

pd/2t
pd/3t
pd/t
pd/4t

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