In a heat engine, the temperature of the source and sink are 500 K and 375 K. If the engine consumes `25xx10^5J` per cycle, find(a) the efficiency of the engine, (b) work done per cycle, and (c) heat rejected to the sink per cycle.A. `6.25xx10^(5) J`B. `3xx10^(5) J`C. `2.19xx10^(5) J`D. `4xx10^(4) J`

In a heat engine, the temperature of the source and sink are 500 K and

1.	In a heat engine, the temperature of the source and sink are 500 K and 375 K. If the engine consumes `25xx10^5J` per cycle, find(a) the efficiency of the engine, (b) work done per cycle, and (c) heat rejected to the sink per cycle.A. `6.25xx10^(5) J`B. `3xx10^(5) J`C. `2.19xx10^(5) J`D. `4xx10^(4) J`
Answer» Correct Answer - A Here `T_(1)=500 K, T_(2)=375 K,Q_(1)=25xx106(5) J` `therefore eta =1-(T_(2))/(T_(1))=1-(375)/(500)=0.25 = 25%` `W=etaQ_(1)=0.25xx25xx2510^(5)=6.25xx10^(5)J`

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