Question: A real heat engine working between heat reservoirs at 970K and 650K produces 550J of work per cycle for a heat input of 2200 J.

A real heat engine working between heat reservoirs at 970K and 650K produces 550J of work per cycle for a heat input of 2200 J.
(a) Compare the efficiency of this real engine to that of an ideal (Carnot) engine.
(b) Calculate the total entropy change of the universe per cycle of the real engine.
(c) Calculate the total entropy change of the universe per cycle of a Carnot engine operating between the same two temperatures?

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