1. The compression ratio in an air-standard cycle is 6. At the beginning of compressoin process the pressure is 0.1MPa, and the top pressure is 3.0MPa. Determine the mean effective pressure.

2. The compression ratio in an air-standard otto cycle is 8. At the beginning of compressoin process the pressure is 101.325 KPa, and the top pressure is 3432.33KPa. Determine the mean effective pressure. (k=1.3)

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