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Process Equipment and Plant Design

Process Equipment and Plant Design
Wall thickness of schedule 40 pipe as compared to that of schedule 80 pipe is

Same
More
Cither A or B; depends upon the I.D. of the pipe
Less

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Process Equipment and Plant Design
In the downcomer of a distillation column, the minimum recommended residence time is about __________ seconds.

12.5
17.5
5
2.5

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Process Equipment and Plant Design
If a single tube pass heat exchanger is converted to two passes; for the same flow rate, the pressure drop per unit length in tube side will __________ times.

Increase by 1.8
None of these
Increase by 21.6
Decrease by 22

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Process Equipment and Plant Design
In actual operation of a bubble cap distillation tower, the __________ at the bottom of the tower is more than that at the top of the tower.

All of these
Molal flow rate of vapour
Pressure and temperature
Vapour molecular weight

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Process Equipment and Plant Design
In a thin cylindrical shell, the hoop stress is __________ stress.

Radial
Longitudinal
Compressive
Circumferential tensile

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Process Equipment and Plant Design
In the agitators, the power required will be changed with the increase of diameter of agitator (D) as

D²
D⁵
D⁹
D

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