A Brayton cycle operates with isentropic compression and expansion. Air enters the compressor at 27C. The pressure ratio is 8:1, and the air leaves the combustion chamber at 1200K. Compute the thermal efficiency of the cycle, using the following data from a table of ideal gas properties of air. Take the value of h1=295.2 kJ/kg,pr1=1.386,h3=1277.8kJ/kg, and pr3=238. Take the value of pr540=11.2,pr700=28.80, and pr710=30.38. Your answer should be within +/2% of the correct