Air-flow is entering to frictionless duct of 0.3 m diameter at a velocity of 580 m/s and a Mach number of 2. A 100 kJ/kg of heat is added to the flow and Mach number of 1.2 is attained. Determine (i) change in enthalpy of flow, (ii) change in kinetic energy of the flow, (iii) change in static pressure in terms of inlet pressure. Comment on result and show the process on T-S diagram.