xample: Two Carnot Engines A and B are operated in series. The first one A receives heat at 900 K and rejects to a reservoir at temperature TK. The second engine, B, receives the heat rejected by the first Engine and in then rejects to a heat reservoir at 400 K. Calculate the temperature T for the situation. (a) The work outputs of the two engines are equal (b) The efficiency of the two engines are equal. For Engine A take in heat Q at temperature Ti and rejected heat Q at temperature T, and the engine B taken in heat Q at temperature T and reject heat Q at temperature T2.