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Process Equipment and Plant Design

Process Equipment and Plant Design
Excessive liquid gradient on a tray may result in the

Gas blowing beneath cap skit
Maldistribution of gas
All of these
Back trapping

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Process Equipment and Plant Design
In case of 1.5" heat exchanger tubes, the inside flow area __________ with decrease in BWG.

Increases
None of these
Remains same
Decreases

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Process Equipment and Plant Design
The value of fouling factor depends upon the

Velocity of process fluid containing suspended solids
Suspended solids in the fluid
All of these
Characteristic of process fluid

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Process Equipment and Plant Design
For turbine agitator, the impeller diameter is about

0.1 to 0.2 d
0.3 to 0.5 d
0.95 d
0.65 to 0.85 d

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Process Equipment and Plant Design
Heat transfer co-efficient for a horizontal condenser as compared to a vertical condenser operating under similar conditions is

Less
About 0.33 times
Same
About 3 times

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Process Equipment and Plant Design
Back-trapping in a distillation column results due to

Low reflux ratio
Low gas velocity
Excessive liquid gradient over the tray
High gas velocity

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