Work ratio of a gas turbine may be improved by

-Increase the turbine inlet temperature provided the turbine materials can stand the temperature or one has access to replacement parts that can withstand the temperatures. -Increase the pressure ratio. There is a limit to the efficiency increase depending upon the turbine inlet temperature. One can concievably increase the pressure ratio to a point that the increased work is never recovered because the expansion across the turbine is inadequate to recover the work. - Power augmentation through steam injection. -On turbines with HP and LP turbine separated, apply reheat.