(b) Steam is expanded isentropically in a convergent-divergent nozzle from 15 bar pressure and 380 C temperature to a pressure of 1.5 bar at the nozzle exit. The mass of steam that has to pass the nozzle is 3.18 kg/sec. Neglecting the inlet velocity to the nozzle, calculate; i. the throat area of the nozzle, ii. the required exit area of the nozzle for equilibrium flow. Take 1.4, and R = 287 J/kg K.