The Carnot efficiency for a heat engine operating between the temperatures of 227^oC and 27^oC is

Question

Quizplus · Accepted Answer

The Carnot efficiency of a heat engine is given by (T1 - T2)/T1, where T1 is the absolute temperature of the hot reservoir and T2 is the absolute temperature of the cold reservoir. Converting the given temperatures to absolute temperature in Kelvin, we get T1 = 500 K and T2 = 300 K. Plugging the values into the formula, we get (500 - 300)/500 = 0.4 or 40%. Therefore, the answer is choice C.

The Carnot Efficiency for a Heat Engine Operating Between the Temperatures