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Process Equipment and Plant Design

Process Equipment and Plant Design
Which of the following packing materials provides for maximum mass transfer?

All of these
Raschig rings
Lessig rings
Cross-partition rings

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Process Equipment and Plant Design
25 per cent cut segmental baffle means that the baffle

Spacing is 75% of its height
Height is 25% of the I.D. of the shell
Width is 25% of its height
Height is 75% of the I.D. of the shell

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Process Equipment and Plant Design
Hold up of material in a operating rotary drier is in the range of

0.05 to 0.15
0.5 to 0.8
0.25 to 0.50
0.8 to 0.9

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Process Equipment and Plant Design
The minimum plate spacing in most of the pertroleum refinery distillation columns (of dia > 3 ft) is normally __________ inches.

34
18
6
12

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Process Equipment and Plant Design
Rivets are generally specified by the

Head diameter
Shank diameter
Overall length
None of these

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Process Equipment and Plant Design
In a __________ rivetted joint, the rivets in the various rows are opposite to each other.

Diamond
Chain
Zig-zag
None of these

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