Chemical Engineering - Heat Transfer

1.
What is the steam economy in case of a single effect evaporator system ?
1
>1
< 1
0.1
Answer: Option
Explanation:
No answer description is available. Let's discuss.

2.
If average heat transfer co-efficient is ha and the local coefficient at the end of the plate is hl then in case of heat transfer to a fluid flowing over a flat plate, heated over its entire length
ha = hl
ha = 2hl
ha = 0.5 hl
ha = 0.75 hl
Answer: Option
Explanation:
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3.
jH factor for heat transfer is not a function of the __________ number.
Reynolds
Nusselt
Grashoff
both (b) & (c)
Answer: Option
Explanation:
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4.
The Fourier number (defined as a.t/L2) is used in the analysis of problem involving heat transfer by
forced convection
natural convection
transient conduction
steady state conduction
Answer: Option
Explanation:
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5.
The energy radiated from a surface Q at absolute temperature T is related as
QT2
QT4
QT3
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.