A turbo jet engine takes in 50 kg/sec of air and propels an aircraft with uniform flight speed 880 km/hr. Isentrophic enthalphy change for nozzle is 188 kj/kg and its velocity co-efficient is 0.96. the fuel air ratio is 1.2%. combustion efficiency is 95%, calorific value of fuel is 44000 kj/kg. find out, i. ii. iii. iv. Thermal efficiency of the engine Fuel flow in kg/hr Propulsive efficiency Overall efficiency