A gas turbine working on an air standard Brayton cycle has air enter into the compressor at atmospheric condition and 22°C. The pressure ratio is 9 and the maximum temperature in the cycle is 1077°C. Compute for the cycle/thermal efficiency per kg of air in percent.

Two ideal Brayton cycles (see Figure below) have the same inlet temperature and the same maximum temperature of the turbine inlet. Brayton Cycle A has a higher compression ratio than Cycle B. Which of the following statements is true about the cycles? Cycle A has a higher thermal efficiency and Cycle B has a higher work net for a given mass flow rate.   Cycle B has a higher thermal efficiency and a higher work net for a given mass flow rate.   Since the temperatures are the same the efficiencies and work net are also the same.   Cycle A has a higher work net for a given mass flow rate and Cycle B has a higher thermal efficiency.   Cycle A has a higher thermal efficiency and a higher work net for a given mass flow rate.