A Carnot engine, whose efficiency is `40%`, takes in heat from a source maintained at a temperature of 500K. It is desired to have an engine of efficiency `60%`. Then, the intake temperature for the same exhaust (sink) temperature must be:A. efficiency of carnot engine cannot be made larger than 50 %B. 1200 KC. 750 KD. 600 K

A Carnot engine, whose efficiency is `40%`, takes in heat from a sourc

1.	A Carnot engine, whose efficiency is `40%`, takes in heat from a source maintained at a temperature of 500K. It is desired to have an engine of efficiency `60%`. Then, the intake temperature for the same exhaust (sink) temperature must be:A. efficiency of carnot engine cannot be made larger than 50 %B. 1200 KC. 750 KD. 600 K
Answer» Correct Answer - C The efficiency of engine , `eta=1-(T_("sink"))/(T_("source"))` `rArr" " 0.4=1-(T_("sink"))/(500)rArrT_("sink")=0.6xx500=300K` ` 0.6=1-(300K)/(T_("source"))rArrT_("source")=(300K)/(0.4)=750K`

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