Heat Transfer,Refrigeration and Air Conditioning - Mechanical Engineering Questions and Answers

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Thermal conductivity of a material may be defined as the

quantity of heat flowing in one second through a slab of the material of area 1 cm² and thickness 1 cm when its faces differ in temperature by 1° C

quantity of heat flowing in one second through one cm of material when opposite faces are maintained at a temperature difference of 1° C

heat conducted in unit time across unit area through unit thickness when a temperature difference of unity is maintained between opposite faces

all of the above

Answer : Option D

Explanation :

No answer description available for this question.

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