A steam turbine receives 0.52 MPa of steam at 300 C. Then expand in an irreversible adiabatic process to a pressure of 0.012 MPa. If the exhaust steam is dry and saturated, calculate: a. The work of an irreversible process b. The efficiency of the process.

The state of a system is changed from state “A” to state “B” irreversibly, and then repeated using a reversible process. Which of the following is true? a)The entropy change will be same for both processes. b)The pressure change will be the same for both processes.  c)Both “a” and “b”

Calculate the work (in kJ) when substance initially at 95 kPa, 19 m³ is expanded against a linear spring to 245 kPa, 67 m³.