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Process Equipment and Plant Design

Process Equipment and Plant Design
__________ dished head is the strongest of all.

Elliptical
Torispherical
Hemispherical
None of these

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Process Equipment and Plant Design
The dust collection efficiency of electrostatic precipitator increases with increase in the

Gas flow rate
Electrode area
Neither A nor B
Both A & B

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Process Equipment and Plant Design
The ratio of volumes of the mixed reactor to the plug flow reactor (for identical feed composition, flow rate, conversion, and for all positive reaction orders) is always

1
< 1
Equal to the order of reaction
>1

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Process Equipment and Plant Design
Normally, the ratio of the total riser area to the tower cross sectional area (for bubble cap towers of diameter more than 3 ft) is around

0.1-0.2
0.35-0.75
0.4-0.6
0.55-0.85

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Process Equipment and Plant Design
For a given design of bubble cap, the number of bubble caps to be used per tray is set by the

Diameter of the column
Plate spacing
Allowable gas velocity through the slots
All of these

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Process Equipment and Plant Design
In case of saddle packing (e.g., berl and intralox saddles), the maximum size of the packing should not exceed __________ of the column diameter.

l/50th
l/5th
l/30th
l/15th

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