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Which of the following changes would make a heat engine less efficient?

A. A decrease in its exhaust temperature
B. A decrease in entropy
C. An increase in work done
D. A decrease in its operating temperature

Respuesta :

lr1265
A decrease in it's operating temperature would make a heat engine less efficient. This is because in order to operate, a heat engine needs to be hot and maintain that temperature.
scme1702
D
A decrease in operation temperature will decrease the temperature difference and reduce efficiency.

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