An ideal cold air-standard Brayton cycle engine operates with air entering the compressor at 27 C. The pressure ratio is 6, and air leaves the combustion chamber at 1100 K. Determine the following:
i) The compressor work input (kJ/kg)
ii) The turbine work output (kJ/kg)
iii) The cycle thermal efficiency
iv) The cycle thermal efficiency if an ideal regenerator is employed