1. (i) A 4-cylinder spark-ignition engine delivers 300kW power at 4000tpol. The volume changes from 0.2103m3 to 2.4101m3 in each cylinder. Caleulate the net work output (in kJ) per cylinder per thermodynamic cycle, and the mean effective pressure (in kPa). (ii) Using the cold-air-standard assumptions, calculate the thermal efficiency of this engine. (iii) What would be the maximum possible thermal efliciency of a cyele operating between the same minimum (27C) and maximum (1027C) temperatures? Explain briefly (I2 sentences) why this efficiency is higher than part (ii) despite both involve reversible processes