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Process Equipment and Plant Design

Process Equipment and Plant Design
The operating pressure drop range in a bag filter is about __________ mm water gauge.

1500-2500
43961
500-1500
50-150

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

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

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Process Equipment and Plant Design
In a distillation column, bubble caps are located on trays with a pitch of __________ times the outside diameter of the caps.

1.6 to 2
2.5
1.3 to 2
1.5 to 3

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

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

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Process Equipment and Plant Design
Maximum allowable vapour velocity in a bubble cap tower is determined by the

Entrainment considerations
Vapour density
None of these
Diameter of the column

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Process Equipment and Plant Design
Log mean temperature difference in case of multi-pass shell and tube heat exchanger is always

Both B & C
Less than arithmetic mean value
More than arithmetic mean value
More than geometric mean value

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