ke Cp=1.005kJ/kg.K,Cv=0.7178kJ/kgK,R=0.287kJ/kg.K and =1.4) state 1, the air occupies a volume of 0.4m3 and at a pressure of 100kPa and a perature of 25C. The air undergoes a series of non-flow processes to complet Process 1-2: From state 1, the air undergoes a reversible isothermal compression to a pressure of 450kPa. Process 2-3: From state 2, the air undergoes a reversible adiabatic expansion from 450kPa to 0.4m3 Process 3-1: From state 3 , to complete the cycle, the air undergoes reversible constant volume process to the initial pressure 100kPa a) Make a sketch of the P-v diagram for the series of processes in the cycle