What does a composite wall mean? - Heat Transfer

Q.  What does a composite wall mean?
- Published on 11 Aug 15

a. two walls of different materials are connected in series without any gap between them
b. three walls of different materials are connected in series without any gap between them
c. more than three walls of different materials are connected in series without any gap between them
d. all of the above

ANSWER: all of the above

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