Question

A cyclic machine receives 325 kJ from a 1000 K energy reservoir. It rejects 125 kJ

to a 400 K energy reservoir and the cycle produces 200kJ of work as output. Is

this cycle reversible, irreversible, or impossible?​

Answer 1

Answer:

A cyclic machine, receives 325 kJ from a 1000 K energy reservoir. It rejects 125 kJ to a 400 K energy reservoir and the cycle produces 200 kJ of work as output. Is this cycle reversible, irreversible, or impossible?

ηCarnot = 1 − TL/TH = 1 − 400/1000 = 0.6 ηeng = W/QH = 200/325 = 0.615 > ηCarnot This is impossible