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Process Equipment and Plant Design

Process Equipment and Plant Design
In most of the shell and tube heat exchangers, the tube pitch is generally __________ the tube diameter.

2.5 times
1.25-1.50 times
One-fourth of
Less than

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Process Equipment and Plant Design
A claming section before the liquid flows into the downcomer is privided to

Permit release of entrained vapour in the liquid
Ensure better vapour-liquid contact
Cool the liquid before it flows down
Reduce the discharge fluctuation

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Process Equipment and Plant Design
Which of the following types of reactors is the safest from operation point of view?

Pot type reactor
A liquid phase catalytic reactor
A liquid phase reactor
A vapor phase reactor

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Process Equipment and Plant Design
The buckling tendency of compression members is always in the direction of the

None of these
Axis of the load
Least radius of gyration
Perpendicular to the axis of the load

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

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Process Equipment and Plant Design
In case of a shell and tube heat exchanger, the effect of L/D on inside film heat transfer co-efficient (hi) vanishes after a Reynold number of

5000
10000
3000
1000

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