Two carnot engine A and B operate respectively between `500 K` and `400 K` , and `400 K` and `300 K`. What is the percentage difference in their efficiencies ?

Two carnot engine A and B operate respectively between `500 K` and `40

1.	Two carnot engine A and B operate respectively between `500 K` and `400 K` , and `400 K` and `300 K`. What is the percentage difference in their efficiencies ?
Answer» `eta_(A)= 1-((T_(2))/(T_(1)))_(A)= 1-(400)/(500)` `1/5= 1/5xx100%= 20%` `eta_(B)= 1-((T_(2))/(T_(1)))_(B)- 1-(300)/(400)` `= 1/4= 1/4xx100= 25%` `eta_(B)-eta_(A)= 25-20 = 5%`

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Two carnot engine A and B operate respectively between `500 K` and `400 K` , and `400 K` and `300 K`. What is the percentage difference in their efficiencies ?

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