Questions
An ideal heat engine exhausting heat at 27°C is to have 25% efficiency. It must take heat at:
a
127°c
b
227°c
c
327°C
d
673°C
detailed solution
Correct option is A
η=1-T2T1⇒0.25=1-300T1⇒T1=400 K=127oCTalk to our academic expert!
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