According to the second law of thermodynamics,which of the following applies to the heat received from a high temperature reservoir by a heat engine operating in a complete cycle?
A)must be completely converted to work
B)equals the entropy increase
C)converted completely into internal energy
D)cannot be completely converted to work

Question

Quizplus · Accepted Answer

The second law of thermodynamics states that not all the heat received from a high-temperature reservoir can be converted into work by a heat engine. A portion of the heat must be rejected to a low-temperature reservoir, and the amount of heat that cannot be converted into work is equal to the entropy increase in the system. Therefore, choice D is the correct answer.  The heat may be partially converted into work, but not completely.

According to the Second Law of Thermodynamics,which of the Following