4.4 In a gas turbine, combusted gas with a volumetric flow rate of 0.5 m/s expands from 50 bar, 650C to 4 bar. The turbine generates 5 MW of power and rejects 200 kJ/min of heat to the surrounding. Neglecting the change of kinetic and potential energies and assuming that the cross-sectional area of the inlet and outlet to be the same, determine: a) the mass flow rate (kg/s) b) the gas temperature at outlet (C) c) the ratio of outlet to inlet velocities d) the volumetric flow rate at outlet (m/s). Take the value of cp and k of the gas to be 1.15kJ/kg.K and 1.3 respectively. Cp