An ideal Carnot engine whose efficiency is 50 \% receives heat at 500 K. If the efficiency is to be 60 \%, then intake temperature for the same exhaust temperature is

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Accepted Answer

Correct answer: B. (b) The efficiency of heat engine, =1- T_2T_1. where T_1= temperature of source T_2= temperature of sink Initial efficiency =50 \%= 50100 and let T_3= changed intake temperature. 50 \%=1- T_2T_1 ⇒ 50100=1- T_2500 ⇒T_2=250 K New efficiency =60 \% 60100=1- T_2T_3 Putting T_2=250k ∴ T_3=625K

$An ideal Carnot engine whose efficiency is 50 % receives heat at 500 K . If the efficiency is to be 60 %, then intake temperature for the same exhaust temperature is$

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