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Process Equipment and Plant Design

Process Equipment and Plant Design
Baffle spacing is generally __________ the I.D. of the shell.

Not less than one fifth of
More than
Both B and C
Not greater than

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Process Equipment and Plant Design
Le/D for 90° elbow (medium radius) and 90°square elbow would be respectively around

100 and 250
250 and 600
25 and 60
3 and 5

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Process Equipment and Plant Design
Minimum baffle spacing recommended in a shell and tube heat exchanger is equal to

40% of the I.D. of the shell
5 cms
25 cms
I.D. of the shell

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Process Equipment and Plant Design
In packed absorption tower, onset of flooding usually occurs at a pressure drop of about __________ mm of water column per metre height of packing.

50-75
25-50
750-1000
200-250

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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. .

0.5
6.8
1.2
3.8

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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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