A steam pipe is intended to be insulated with two layers of insulating materials of different thermal conductivities. For minimum heat transfer to take place________?
ASteam temperature is considered before deciding as to which insulating material is to be put
BThe better insulation material should be put just next to pipe (i.e., inside)
CThe better insulating material should be put outside
DEither of the insulating material could be put on either side
Correct answer
B. The better insulation material should be put just next to pipe (i.e., inside)
Explanation
The correct answer is The better insulation material should be put just next to pipe (i.e., inside).