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1. |
What is the temperature gradient in the conduction heat transfer? |
A. | change in temperature per unit change in time |
B. | change in temperature per unit change in distance in the direction of heat flow |
C. | change in temperature per unit change in cross-sectional area normal to the direction of heat flow |
D. | change in temperature per unit change in cross-sectional area parallel to the direction of heat flow |
Answer» C. change in temperature per unit change in cross-sectional area normal to the direction of heat flow | |