Afour-cylinder, four stroke internal combustion engine has a bore of 12 cm and a stoke of 10 cm in each cylinder. the clearance volume is 12.5% of the cylinder volume at the bottom dead center. the process in each cylinder is modeled as an air-standard otto cycle with a temperature of 300 k and a pressure of 95 kpa at the beginning of compression and the maximum temperature of 1540 k in the cycle. the rate of added heat per unit of mass is 750 kj/kg, during the combustion process. (a) draw the puy diagram of the modeled otto cycle and mark the given temperatures, pressure, and added heat. (b) assume air to be an ideal gas with variable specific heats. (c) find the net work output per unit of mass and solve for the thermal efficiency and the mean effective pressure of the cycle.