Consider a 2-stroke twin cylinder ci engine that operates on an ideal diesel cycle. it uses light diesel fuel with a combustion efficiency of 85%. the bore is 7.6cm and the stroke is 8cm. the geometric compression ratio is 16, the trapped compression ratio is 12, and the compression ratio at tpo is 14. mechanical efficiency is 87% and the trapping efficiency is 84%. at 3500 rpm, the conditions in the cylinder at start of compression are 125 kpa and 38°c. if the engine has a cutoff ratio of 3.5, calculate: (a) net work (b) actual air fuel ratio (c) indicated thermal efficiency (d) brake power (e) bmep and bsfc