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Chemical Engineering - Process Equipment and Plant Design

Exercise : Process Equipment and Plant Design - Section 6
21.
In inclined long tube vertical evaporators, the tubes are inclined at an angle of
15°
90°
45°
60°
Answer: Option
Explanation:
No answer description is available. Let's discuss.
22.
In a continuous distillation column, the optimum reflux ratio ranges from __________ times the minimum reflux ratio.
1.1 to 1.5
1.6 to 2
2.2 to 2.6
2.7 to 3
Answer: Option
Explanation:
No answer description is available. Let's discuss.
23.
The wall thickness for a large high pressure pipeline is determined by the consideration of the
axial tensile stress in the pipe.
forces exerted by static and dynamic action at bends.
circumferential pipewall tension.
temperature stresses.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
24.
In the case of a shell and tube heat exchanger, the logarithmic mean temperature difference
is always less than arithmetic average value.
is always more than arithmetic mean value and the geometric mean value.
is always less than arithmetic mean value, but more than geometric mean value.
may be either more or less than geometric mean and arithmetic mean value depending upon whether the flow of stream is co-current or counter-current.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
25.
Skirt support is the most suitable for supporting __________ vessels.
small horizontal
large horizontal
tall vertical
thick walled
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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