Energy added to a cyclical heat engine

Question

Quizplus · Accepted Answer

According to the Second Law of Thermodynamics, not all of the energy added to a heat engine can be converted into work. Some of the energy must be rejected as waste heat to maintain the temperature gradient necessary for the engine to function. Therefore, choice B is correct as it states that energy added to a cyclical heat engine is converted to both work and waste heat. Choices A and C are incorrect as they suggest that all of the energy added is converted to work, which is not possible. Choice D is incorrect as it suggests that the added energy is converted to increased internal energy and work, which is not true for a cyclical heat engine.

Energy Added to a Cyclical Heat Engine