1.Which of the following expresses the relationship for the change in entropy in a reversible process between two end states, and then the change in entropy in an irreversible process between the same two end states?
A) (S2-S1) irreversible = (S2-S1) reversible
B) (S2-S1) irreversible > (S2-S1) reversible
C) (S2-S1) irreversible < (S2-S1) reversible
D) None of the above
2.Steam at 10 MPA, 600 C, enters a well insulated turbine operating at steady state and exits at 0.1 bar and a quality of 92%. The volumetric flow rate at the inlet is 0.36 m^3/s. Assuming the kinetic and potential energy effects to be negligible, determine
A) the mass flow rate in kg/s
B) the temperature at the exit of the turbine, in C
C) the power developed by the turbine in kW
D) the isentropic turbine efficiency
E) the entropy at the exit of the turbine, in kJ/kg K
F) the rate of entropy production within the turbine, in kW/K