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Process Equipment and Plant Design

Process Equipment and Plant Design
In hydrostatic testing of welded pipe (for leakage, strength etc.) the ratio of minimum hydrostatic test pressure to internal design pressure is around

3.5
1.5
0.5
2.5

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Process Equipment and Plant Design
What is the value of 'q' for saturated vapor feed to a distillation column ?(where q = fraction of the feed stream that is liquid.)

> 1
1

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Process Equipment and Plant Design
for couplings and unions would be

Negligible
60
350
200

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Process Equipment and Plant Design
Reflux ratio variation in a distillation column is between

None of these
Zero and one
Zero and infinity
Minimum and infinity

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Process Equipment and Plant Design
Floating head heat exchangers are used for the

Heat transfer between corrosive fluids
Cases where temperature difference between the shell and the tubes is more (>50°C)
Counter-current heat transfer systems
Co-current heat transfer systems

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Process Equipment and Plant Design
A claming section before the liquid flows into the downcomer is privided to

Cool the liquid before it flows down
Reduce the discharge fluctuation
Ensure better vapour-liquid contact
Permit release of entrained vapour in the liquid

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