Heat Transfer Questions

Q.  What is diffuse reflection of radiation?

a. the reflection of radiation on a rough surface which occurs in all directions
b. the reflection of radiation on a rough surface which occurs in a single direction
c. the reflection of radiation on a smooth surface
d. none of the above


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MCQs:  What is critical heat flux in boiling heat transfer process?
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MCQs:  What is the correct formula for the rate of heat transfer (q) through a plane wall of thickness l and surface are A, when temperature difference between two surfaces is ΔT ? The thermal conductivity is k.
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