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Process Equipment and Plant Design

Process Equipment and Plant Design
Shell side heat transfer co-efficient in case of square pitch as compared to the triangular pitch under similar condition of fluid flow and tube size is

Less
More
Twice
Same

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

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

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Process Equipment and Plant Design
In a pressure vessel containing multiple openings of various dimensions at different parts, stress concentration at the edges of the opening is maximum which becomes negligibly small beyond the area covered by __________ times the hole diameter.

Five
Twenty
Ten
Two

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Process Equipment and Plant Design
The ideal size of round bubble caps to be used in industrial distillation column having a diameter of 3-6 metres is __________ cms.

7.5
50
15
5

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Process Equipment and Plant Design
Maximum size of the raschig rings used in a packed tower is about __________ of the coloumn diameter.

1/10th
1/30th
1/20th
1/50th

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Process Equipment and Plant Design
The slope of operating line in the rectifying section of a distillation column is unity, if the reflux ratio is

0
1
∞
Minimum

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