Steam at 3 mpa, 300°c leaves the boiler and enters the hp turbine in a reheat cycle and is expanded to 300 kpa. the steam is then reheated to 300°c and expanded in the second stage turbine to 10 kpa. what is the efficiency of the cycle if it is assumed to be internally reversible?

Avolume of 2.65 m3 of air in a rigid, insulated container fitted with a paddle wheel is initially at 264 k, 5.6 bar. the air receives 432 kj by work from the paddle wheel. assuming the ideal gas model with cv = 0.71 kj/kg • k, determine for the air the amount of entropy produced, in kj/k