A well-insulated turbine operating at steady state has two stages in series. Steam enters the first stage at 800 degrees F, 600 lbf/in^2 and exits at 250 lbf/in^2. The steam then enters the second stage and exits at 14.7 lbf/in^2. The isentropic efficiencies of the stages are 85% and 91% respectively. Show the principal states on a T-s diagram.