Arithmetic mean area can be used in heat transfer problem to calculate the heat flow by conduction through a cylinder which is

thin walled having the value of Ao Ai/< 2.

Arithmetic mean area can be used in heat transfer problem to calculate

1.	Arithmetic mean area can be used in heat transfer problem to calculate the heat flow by conduction through a cylinder which is
A.	thin walled having the value of Ao Ai/< 2.
B.	thick walled.
C.	having the value of Ao/Ai > 2.
D.	both (b) and (c).
Answer» B. thick walled.

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Arithmetic mean area can be used in heat transfer problem to calculate the heat flow by conduction through a cylinder which is

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