Steam enters a turbine with a pressure of 3 MPa and a temperature of 400^oC. Saturated vapor at 100^oC exits the turbine. At steady state, the turbine produces work equal to 540 kJ per kg of steam flowing through the turbine. Heat transfer between the turbine and its surroundings occurs at 350 K.

              (A) Calculate the rate of heat transfer to the surroundings per kg steam? 

              (B) What is the rate of entropy production within the turbine per kg of steam?