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Chemical Engineering - Heat Transfer

Exercise : Heat Transfer - Section 8
26.
Which is the most suitable for cold viscous feed?
Forward feed
Backward feed
Mixed feed
Parallel feed
Answer: Option
Explanation:
No answer description is available. Let's discuss.
27.
Dropwise condensation is promoted on a/an __________ surface.
glazed
oily
coated
smooth
Answer: Option
Explanation:
No answer description is available. Let's discuss.
28.
At Pr > 1, conduction in an ordinary fluid flowing through a heated pipe is limited to the
buffer zone
turbulent core
both (a) and (b)
viscous sub-layer
Answer: Option
Explanation:
No answer description is available. Let's discuss.
29.
In a single evaporator system, the steam economy __________ by creating vacuum in the evaporator.
increases
decreases
remains constant
may increase or decrease, depends on the vacuum
Answer: Option
Explanation:
No answer description is available. Let's discuss.
30.
is called the __________ number
Peclet
Stanton
Graetz
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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