Air is used as the working fluid in a simple ideal Brayton cycle having a pressure ratio of 12, a compressor inlet temperature of 300 K, and a turbine inlet temperature of 1000 K. Determine the mass...

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Extracted text: Air is used as the working fluid in a simple ideal Brayton cycle having a pressure ratio of 12, a compressor inlet temperature of 300 K, and a turbine inlet temperature of 1000 K. Determine the mass flow rate of air required for a net power output of 70 MW, assuming the compressor and turbine have isentropic efficiencies of (a) 100 percent and (b) 85 percent. Assume the specific heat is constant at room temperature.?