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Chemical Engineering - Heat Transfer

Exercise : Heat Transfer - Section 4
6.
What is Nusselt number ?
Answer: Option
Explanation:
No answer description is available. Let's discuss.
7.
Steam traps are provided in steam carrying pipelines to
condense steam.
release excess steam pressure by bleeding steam.
remove condensate and inert gases.
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
8.
The Dietus-Boelter equation for convective leat transfer

cannot be used for
low Reynold's number
very low Grashoff number
molten metals
all (a), (b) and (c)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
9.
A hot liquid is kept in a big room. The logorithm of the numerical value of the temperature difference between the liquid and the room is plotted against time. The plot will be very nearly a/an
ellipse
straight line
parabola
circular arc
Answer: Option
Explanation:
No answer description is available. Let's discuss.
10.
Radiation heat transfer rates does not depend upon the
type of absorbing surface.
distance between the heat source and the object receiving the heat.
surface area and temperature of the heat source.
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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