Q3 An Otto cycle engine operating at sea-level standard atmospheric conditions when the temperature, pressure, and density are 15 C 101325 Pa, and 1.225 kg/m respectively, has the following characteristics. Volumetric compression ratio = 7.5 No of cylinders = 6 Number of revolutions per minute, n = 2800 5 Diameter, d 135 mm Stroke, c 110 mm . Calorific power Q = 45 MJ/kg . Air to fuel mass ratio a = 15 . Specific ratio=1.4 Neglecting the energy losses due to the real cycle, the friction between mechanical parts, and the energy losses in the combustion chamber, determine: Generated power. (ii) Average effective pressure. (iii) Specific consumption. O (iv) Temperature (T2) and pressure (P2) reached at the end of the compression process. 7 marks 4 marks 4 marks 10 marks