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Process Equipment and Plant Design

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

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

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Process Equipment and Plant Design
The operating pressure drop range in a bag filter is about __________ mm water gauge.

43961
50-150
1500-2500
500-1500

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Process Equipment and Plant Design
Le/D for a Tee (used as elbow, entering branch) would be

Both B and C
Around 90
More than that for Tee (used as elbow, entering run)
Less than that for Tee (used as elbow, entering run)

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Process Equipment and Plant Design
Which of the following is used to set the diameter of the distillation column?

Allowable vapour velocity
Static submergence
Number of theorectical plates
Length of straight rectangular weir on cross-flow tray

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

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

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Process Equipment and Plant Design
Maximum allowable vapour velocity in a bubble cap tower is determined by the

Entrainment considerations
None of these
Vapour density
Diameter of the column

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