In a simple gas turbinr power plant operating on standard Brayton cycle power needed to drive the compressor is 175kW, rate of heat supplied during constant pressure heat addition process is 675kW. Turbine output obtained during expansion is 425kW. What is the rate of heat rejection during constant pressure heat rejection?
(a) 75 kW (b) 425 kW
(c) 500 kW (d) 925 kW