Final answer:
An overall view of steam plant operation involves the conversion of heat energy into mechanical energy using steam as the working substance.
Step-by-step explanation:
An overall view of steam plant operation involves the conversion of heat energy into mechanical energy using steam as the working substance. The process typically starts with a heat source, such as burning coal or nuclear fission, which generates steam. The steam is then used to drive a turbine, which in turn drives a generator to produce electricity. After passing through the turbine, the steam is condensed back into water and returned to the steam generator to repeat the cycle.