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: 1. The compressor work (kJ/kg) 2. The turbine work (kJ/kg) 3. The cycle thermal efficiency 4. The cycle thermal efficiency if an ideal re-generator is employed.