A Carnot cycle heat engine operates between 400 K and 500 K. Its efficiency is:
A) 20%
B) 25%
C) 44%
D) 79%
E) 100%

Name: A Carnot cycle heat engine operates between 400 K and 500 K. Its efficiency is: A) 20% B) 25% C) 44% D) 79% E) 100%
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Question

Quizplus · Accepted Answer

The efficiency of a Carnot engine is given by 1 - (Tc/Th), where Tc is the cold reservoir temperature and Th is the hot reservoir temperature. Substituting the given values: 1 - (400/500) = 0.20 or 20%.

A Carnot Cycle Heat Engine Operates Between 400 K and 500