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Process Equipment and Plant Design

Process Equipment and Plant Design
The normal range of velocity of water in pipes is __________ m/sec.

15-30
0.1-0.5
1-2
10-50

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Process Equipment and Plant Design
Log mean temperature difference in case of multi-pass shell and tube heat exchanger is always

More than arithmetic mean value
More than geometric mean value
Less than arithmetic mean value
Both B & C

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Process Equipment and Plant Design
Minimum baffle spacing recommended in a shell and tube heat exchanger is equal to

25 cms
I.D. of the shell
5 cms
40% of the I.D. of the shell

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Process Equipment and Plant Design
Factor of safety (i.e., overdesign factor) in heat transfer equipments is about __________ percent more than the actual/theoretical design factor.

15-20
43961
30-35
35-40

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Process Equipment and Plant Design
The length of straight rectangular weir used on cross-flow trays is generally __________ the column diameter.

Equal to
0.6-0.8 times
2 ft irrespective of (for column > 3 ft diameter)
Twice

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Process Equipment and Plant Design
The ratio of tube length to shell diameter in case of liquid shell and tube heat exchanger ranges from

4 to 8
3 to 5
2 to 3
6 to 12

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