For an air-standard brayton cycle air enters at 1.2 bar and 320°k, and a mass flow rate of 8 kg/s. the turbine compressor pressure ratio is 11, and the turbine inlet temperature is 1500°k. for isentropic turbine and compressor efficiencies of 0.9 and 0.85 respectively, determine the following: (1) the thermal efficiency of the cycle; (2) the net power developed in kw; and (3) sketch the pv and ts diagrams.