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Process Equipment and Plant Design

Process Equipment and Plant Design
The practical representative values of HETP for a number of commercial operations lies within a range of __________ metre.

0.1-0.2
0.2-0.5
1.2-1.5
0.4-0.9

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Process Equipment and Plant Design
Typical static submergence for bubble cap plate column operating at atmospheric pressure may be around

0.5"
50% of the plate spacing
5"
2.5"

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

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

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Process Equipment and Plant Design
In case of plain carbon steel, butt welded joints are used for shell plate thickness ≤ __________ cms. .

3.8
0.5
6.8
1.2

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Process Equipment and Plant Design
The design stress, which is more than the damaging stress, is the least unit stress that will render a member unfit for service before the end of its normal life. The design stress factor or factor of safety indicates the margin between design stress and the __________ stress.

None of these
Damaging
Allowable
Working

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Process Equipment and Plant Design
Which of the following packing materials provides for maximum mass transfer?

Raschig rings
Cross-partition rings
All of these
Lessig rings

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