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Process Equipment and Plant Design

Process Equipment and Plant Design
What is the slope of the operating line in the rectifying section of a distillation coloumn?

∞
> 1

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Process Equipment and Plant Design
Le/D for fully open gate valves would be

Much more than that for fully open globe valves
Around 7
Both B and C
Much less (say 2% than that for fully open globe valves)

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Process Equipment and Plant Design
1.2 to 3.8 cms is the value of the

All of these
Static submergence in case of a bubble cap tray for column operating under pressure (≥ 1 atm.)
Skirt clearance for bubble caps
Downcomer liquid seal in case of a balanced tray design

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Process Equipment and Plant Design
Scale up problem in design based on the similarity concept takes into account __________ similarity.

Dynamic
Geometrical
All of these
Kinematic

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Process Equipment and Plant Design
Wall thickness of schedule 40 pipe as compared to that of schedule 80 pipe is

Cither A or B; depends upon the I.D. of the pipe
Less
Same
More

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Process Equipment and Plant Design
Which of the following is the best tube material from thermal conductivity point of view alone?

Stainless steel
Carbon steel
Copper
Aluminium

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