The work output of every heat engine
A) equals its heat intake.
B) equals the difference between its heat intake and heat exhaust.
C) depends only on its intake temperature.
D) depends only on its exhaust temperature.

Question

Quizplus · Accepted Answer

The work output of a heat engine is equal to the difference between its heat intake and heat exhaust, as some of the heat energy is lost to the surroundings as exhaust or waste heat. Therefore, Choice (B) is correct, while choices (A), (C), and (D) are incorrect.

The Work Output of Every Heat Engine