A cyclic machine receives 325 kJ from a 1000 K energy reservoir. It rejects 125 kJ to a 400 K energy reservoir, the cycle produces 200 kJ of work as output. Is this cycle reversible, irrerversible, or impossible? Not exactly sure what he is looking for here. But, since W=QH-QL, does that mean that I can say that the process cold be reversed as a refrigerator so W=QH-QL and is therefore reversible?