1. A steam power plant is proposed to operate between the pressures of 10 kPa and 2 MPa with a maximum temperature of 400 °C, as shown in the following figure. What is the maximum efficiency (in percentage T Saturated liquid: h₁-hy-191.8 kJ/kg 2 MPa Super heat: h; - 3248 kJ/kg 53-7.1279 kJ/kg-K 10 kPa units, %) possible from the power cycle? 2. A steam power plant is proposed to operate between the pressures of 10 kPa and 4 MPa with a maximum temperature of 400 °C, as shown in from problem 1. What is the maximum efficiency (in percentage units, %) possible from the power cycle? 3. Increase the maximum temperature in the cycle of problem 1 to 600° C, while maintaining the boiler pressure and condenser pressure. What is the maximum efficiency possible from the power cycle? 4. Decrease the condenser pressure of problem 1 to 4 kPa while maintaining the boiler pressure and maximum temperature. Determine the thermal efficiency (in percentage units, %) of the modified process.