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Mechanical Engineering · Q72

Heat And Mass Transfer

Engineering and GATE · Mechanical Engineering · question 72

Q72

Thermal conductivity of wood depends on

A.
Moisture
B.
Density
C.
Temperature
D.
All of the above
Answer

Answer: Option D

Solution

Answer: Option D
Solution:
Thermal conductivity is a material property.
It will not differ with the dimensions of a material, but it is dependent on the temperature, the density and the moisture content of the material.
The thermal conductivity of a material depends on its temperature, density and moisture content.