Chemical Engineering - Process Equipment and Plant Design

31.
In chemical process equipments, the conical bottom heads used, usually has an apex angle of
20°
40°
60°
80°
Answer: Option
Explanation:
No answer description is available. Let's discuss.

32.
Smaller sized packings are generally dumped to the packed columns, and the large ones of size greater than __________ mm are stacked individually, which provides better control over bed porosity and offers lower gas pressure drop.
25
50
75
150
Answer: Option
Explanation:
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33.
Shell side heat transfer co-efficient in case of square pitch as compared to the triangular pitch under similar condition of fluid flow and tube size is
more
same
less
twice
Answer: Option
Explanation:
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34.
Correct use of 'factor of safety' is very important in equipment design. It is defined as the ratio of the
ultimate stress to breaking stress.
ultimate stress to working stress.
working stress to ultimate stress.
none of these.
Answer: Option
Explanation:
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35.
The operating velocity in the absorption tower is usually 40-50% of the flooding velocity. Packed absorption towers are normally designed for a pressure drop of about __________ mm of water column per metre height of packing.
1-5
20-40
100-150
1000-1500
Answer: Option
Explanation:
No answer description is available. Let's discuss.