Three materials A, B and C of equal thickness and of thermal conductivity of 20, 40 & 60 kcal/hr. m. °C respectively are joined together. The temperature outside of A and C are 30°C and 100°C respectively. The interface between B and C will be at a temperature of ________ °C?

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Academy of PakistanTest & Learning

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85Chemical EngineeringMedium

A95

B40

C50

D70

Correct answer

D. 70

Explanation

The correct answer is 70.

Three materials A, B and C of equal thickness and of thermal conductivity of 20, 40 & 60 kcal/hr. m. °C respectively are joined together. The temperature outside of A and C are 30°C and 100°C respectively. The interface between B and C will be at a temperature of ________ °C? - Answer and Explanation | Academy of Pakistan