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Process Equipment and Plant Design

Process Equipment and Plant Design
The safe distance of habitation from a hazardous chemical plant (TLV of its product < 1000 ppm) should be about __________ kms.

25
15
5
1

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Process Equipment and Plant Design
For annular flow of a fluid, the ratio of the equivalent diameter for pressure drop calculation to the equivalent diameter for heat transfer calculation is

(d1 + d2)/d1
D1/(d1 + d2)
D2/(d1 + d2)
(d1 + d2)/d2

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Process Equipment and Plant Design
A claming section before the liquid flows into the downcomer is privided to

Reduce the discharge fluctuation
Permit release of entrained vapour in the liquid
Ensure better vapour-liquid contact
Cool the liquid before it flows down

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Process Equipment and Plant Design
Which of the following factors determine the amount of entrainment in a distillation column?

Depth of liquid above the bubble cap slots
Vapour velocity in the volume between the plates
All of these
Plate spacing

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Process Equipment and Plant Design
Speed of industrial paddle agitator ranges from __________ rpm.

20 to 100
1 to 5
500 to 750
1000 to 2000

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Process Equipment and Plant Design
Poisson's ratio of a material is the ratio of unit lateral strain to the unit axial elongation within its elastic limit. The value of Poisson's ratio for structural and pressure vessel steel may be taken as

0.95
0.75
0.01
0.3

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