Steam at a pressure of 2 MPa and 400 C enters an adiabubc steam turbine witha mass flow rate of 15 kg/s The steam exits as a saturated vapor at 50 kPa. What is the power output of the turbine?

A-A nozzle should produce a flow of air with 200 m/s at 20°C, 100 kPa (exit condition). It is estimated that the nozzle has an isentropic efficiency of 92%. Calculate the inlet air conditions, assuming that the inlet kinetic energy is negligible. B- 1kg of air at 10bar and 125°C receives heat at constant pressure until its temperature become 650°C, its then expands adiabatically to pressure of 1bar. Determine the change of entropy during each process and the final air temperature.

1 kg/s steam enters the turbine at 2.5MPa and 500C while leaving at 10kPa with 89% quality. The pump exit condition is at 2.5 MPa and 50C. Find the turbine work output and heat added in the boiler in kW.

Steam is expanded isentropically in a turbine from 800 kPa, 250 °C to 200 kPa. How much work is done in this process per kg of water?