The Otto cycle efficiency is nearest:

The pressure and temperature at the inlet to the ideal Otto cycle, with T-s diagram shown, are 100 kPa and 10ºC. The maximum temperature in the cycle is 1200ºC. Assume constant specific heats from Table below for all calculations.



A) 49%

B) 54%

C) 58%

D) 63%


D) 63%

The cycle efficiency depends only on the compression ratio:

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