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| 1. |
Two Carnot heat engines are operating in series such that the heat sink of the engine serves as the heat source of the second one. If the source temperature of the first engine is 1327°C, the sink temperature of the second engine is 127°C, and the thermal efficiency of both the engines are the same, the temperature of the intermediate reservoir is: |
| A. | 627°C |
| B. | 410°C |
| C. | 577°C |
| D. | 527°C |
| Answer» E. | |