Physics
During power production in a coal-based thermoelectric power plant, the correct sequence of energy conversions taking place is:
- heat → mechanical → chemical
- heat → mechanical → electrical
- chemical → heat → light
- heat → chemical → electrical
Work, Energy & Power
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Answer
heat → mechanical → electrical
Reason — Coal's chemical energy is first released as heat in the boiler (steam). During power production, that heat drives the turbine (mechanical energy), and the generator converts it to electrical energy. Hence the sequence shown is heat → mechanical → electrical.
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