Consider a combined gas-steam turbine cycle with both machines ideal. Air enters the compressor at 1 atm and 500R. 400 percent theoretical air gases enter the gas turbine at 2400R. The pressure ratio for both compressor and turbine is 6. No intercooling, reheat, or regeneration are used in the gas-turbine cycle. The turbine exhaust is used directly without supplementary firing and leaves to the stack at 800R. Steam is produced at 1000 psia and 900F. The condenser pressure is 1 psia. No feedwater heating is used and the pump work may be ignored, Draw the flow and T-s diagrams labelling points correspondingly, and calculate (a) the heat added, per pound mass of air, (b) the steam flow per pound mass of air, (c) the combined work, in Btus per pound mass of air, (d) the combined plant efficiency, and (e) the plant efficiency if the steam cycle is inoperative. (f) Exergic Efficiency