Chapter 15. Efficiency of a Carnot engine (15-28)

Question

tkeWKBBd1SyBQzt+lFEVjX7174UKjL0VfWopOOkEnBeRiuR+
{"title":"Efficiency of a Carnot engine","description":"Correct!","type":"correct","color":"#99CCFF","code":"[{\"shape\":\"poly\",\"coords\":\"82,133\"},{\"shape\":\"rect\",\"coords\":\"10,16,12,16\"},{\"shape\":\"poly\",\"coords\":\"144,22\"},{\"shape\":\"rect\",\"coords\":\"23,63,116,92\"}]"} {"title":"Kelvin temperature of the cold reservoir","description":"Wrong","type":"incorrect","color":"#ffcc00","code":"[{\"shape\":\"rect\",\"coords\":\"243,2,278,41\"}]"} {"title":"Kelvin temperature of the hot reservoir ","description":"Wrong","type":"incorrect","color":"#333300","code":"[{\"shape\":\"rect\",\"coords\":\"244,63,279,107\"}]"}

Question

qnEdFegY3ePmWG5bC3Qc/gq5BPjDjbfJ1KRXNVnIkB6HyZlihuQQL/f0R7o=
{"title":"Efficiency of a Carnot engine","description":"Incorrect","type":"incorrect","color":"#99CCFF","code":"[{\"shape\":\"poly\",\"coords\":\"82,133\"},{\"shape\":\"rect\",\"coords\":\"10,16,12,16\"},{\"shape\":\"poly\",\"coords\":\"144,22\"},{\"shape\":\"rect\",\"coords\":\"23,63,116,92\"}]"} {"title":"Kelvin temperature of the cold reservoir","description":"Correct!","type":"correct","color":"#ffcc00","code":"[{\"shape\":\"rect\",\"coords\":\"243,2,278,41\"}]"} {"title":"Kelvin temperature of the hot reservoir ","description":"Wrong","type":"incorrect","color":"#333300","code":"[{\"shape\":\"rect\",\"coords\":\"244,63,279,107\"}]"}

Question

04TgDz5Gk11hN7O+x5llcpt/pM8USIegjDdTHoT+iVWxILdwlUWHJIgzuUE=
{"title":"Efficiency of a Carnot engine","description":"Incorrect","type":"incorrect","color":"#99CCFF","code":"[{\"shape\":\"poly\",\"coords\":\"82,133\"},{\"shape\":\"rect\",\"coords\":\"10,16,12,16\"},{\"shape\":\"poly\",\"coords\":\"144,22\"},{\"shape\":\"rect\",\"coords\":\"23,63,116,92\"}]"} {"title":"Kelvin temperature of the cold reservoir","description":"Wrong","type":"incorrect","color":"#ffcc00","code":"[{\"shape\":\"rect\",\"coords\":\"243,2,278,41\"}]"} {"title":"Kelvin temperature of the hot reservoir ","description":"Correct!","type":"correct","color":"#333300","code":"[{\"shape\":\"rect\",\"coords\":\"244,63,279,107\"}]"}

Review

The efficiency of an ideal Carnot heat engine depends only on the hot and cold temperatures between which the engine operates. Equation 15-28 is the maximum theoretical efficiency of any heat engine operating between temperatures \(T_{\mathrm{H}}\) and \(T_{\mathrm{C}}\). It is impossible for any engine to do better than this.