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Process Equipment and Plant Design

Process Equipment and Plant Design
Diameter of rivet hole (d, mm) and the plate thickness (t, mm) are related by Unwin's formula as

D = 1.5 t
D = 3√t
D = 1.6 √t
D = 1.1 t

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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

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

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Process Equipment and Plant Design
Generally, as the length of the liquid path on a tray is increased beyond 5 ft, the overall column efficiency

May increase or decrease depending upon the plate spacing
Remains same
Decreases
Increases

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

1500-2500
43961
50-150
500-1500

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

Hemispherical
Torispherical
None of these
Elliptical

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Process Equipment and Plant Design
Joint efficiency (J) for a seamless pipe is

1.2
1
0.85
< 0.5

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