An engine working on Otto cycle has volume of 0.45 m3, pressure 1 bar and temperature 30 °C at the beginning of compression stroke. At the end of compression stroke, the pressure is 11 bar. 210 kJ of heat is added during constant volume heating process. Determine: a) Pressure, temperature and volume at salient points in the cycle. b) Efficiency. c) Net work per cycle .d) Mean effective pressure.