An ideal Otto cycle has a compression ratio of 8. At the beginning of the compression process, air is at 95kPa and 27°C. 750kJ/kg of heat is transferred to air during the constant volume heat addition process. Taking into account the variation of specific heats with temperature (air-standard analysis), determine
i. The pressure and the temperature at the end of the heat addition process
ii. The net work output
iii. The thermal efficiency
iv. The mean effective pressure for the cycle