Evaluate the correct answer of the following problem
Problem- A gas turbine power plant operates on the simple Brayton cycle between the pressure limits of 100 and 1600 kPa. The working fluid is air, which enters the compressor at 40 degrees Celsius and leaves at 650 degrees Celsius. Using constant specific heats for air and assuming a compressor isentropic efficiency of 85% and a turbine isentropic efficiency of 88%.
Part 1- Determine the net work output.
Part 2- Determine back work ratio.
Part 3- Determine the thermal efficiency.
I want experts help to find the thermal efficiency of turbine.