1. An engine working on air standard Otto cycle has a 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. Determine: (i) Pressures, temperatures and volumes at the four points in the cycle. (ii) Percentage clearance (the ratio of the clearance volume to the displacement volume). (iii) Efficiency. (iv) Net work per cycle. (v) Mean effective pressure. (vi) Ideal power developed by the engine if the number of working cycles per minute is 210.