A heat engine receives heat from a source at 1200 K and rejects the waste heat to a sink at 400 K. If the thermal efficiency of the engine is 0.40, the second-law efficiency of this heat engine is
A)40%
B)27%
C)60%
D)67%
E)83%

Name: A heat engine receives heat from a source at 1200 K and rejects the waste heat to a sink at 400 K. If the thermal efficiency of the engine is 0.40, the second-law efficiency of this heat engine is A)40% B)27% C)60% D)67% E)83%
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Question

Quizplus · Accepted Answer

The Answer is C

A Heat Engine Receives Heat from a Source at 1200