A heat engine receives heat from a source at 2000 K at a rate of 500 kW,

Question:

A heat engine receives heat from a source at 2000 K at a rate of 500 kW, and rejects the waste heat to a medium at 300 K. The net output from the engine is 300 kW.
(a) Determine the maximum power that could be generated by the engine for the same heat input.
(b) Determine the thermal efficiency of the engine.