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Process Equipment and Plant Design

Process Equipment and Plant Design
Generally, no corrosion allowance in wall thickness of a part is required, if the thickness is more than __________ mm.

10
30
20
5

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Process Equipment and Plant Design
Two iron pipes of the same nominal diameter but different schedule numbers will have the same

Inside diameter
None of these
Wall thickness
Outside diameter

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

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

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Process Equipment and Plant Design
Needle valves are generally not used for

Very large diameter pipes
High pressure throttling service
Smaller sizes of pipe
Very accurate flow control

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

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

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

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

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