A gas turbine power plant of 10mW capacity works in open cycle. The plant having a regenerator is designed for maximum specific work output. The inlet ait temperature is 300k & the maximum temperaturr of the cycle is 960k. Taking the isentropoc efficiency of the compressor as 0.8, that of the turbine as 0.7, the mechanical & generator efficiency each as 0.95. The regenerator effectiveness as 0.7, the combustion efficiency as 0.96. Determine (a) air to fuel ratio (b) mass flow rate of fuel (c) thermal efficiency.