Question

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.

Answer 1

Correct Answer - A::B::C
(a) `eta=1-(T_2)/(T_1)=1-375/500=0.25=25%`
(b) `W=etaQ_1=0.25xx25xx10^5`
`=6.25xx10^5J`
(c) `Q_2=Q_1-W=(25-6.25)xx10^5`
`=18.75xx10^5J`