Answer: 1) Thermal energy to electrical energy
2) Heat energy to electrical energy
3) Mechanical energy to electrical energy
Explanation: according to the law of conservation of energy, energy changes from one form to another.
The three forms of energy conversions are Chemical energy to heat energy, Heat energy to mechanical energy, and Mechanical energy to electrical energy.
The process of generating electricity from fossil fuel undergoes the following energy conversions;
(i) Chemical energy to heat energy:
The natural form of fossil fuel stores chemical energy in it. when it is burned, the chemical energy is converted into heat energy.
(ii) Heat energy to mechanical energy:
The heat energy produced by burning the fuel is used to either directly rotate the blades of the electricity generator, or through producing high-energy steam by heating water which pushes the blades. Thus, heat energy is converted into mechanical energy.
(iii) Mechanical energy to electrical energy:
The rotating blades of the electricity generator are placed in a magnetic field. As the blades rotate, the magnetic flux changes, and as a result, electricity is produced.
Learn more about conservation of energy:
https://brainly.com/question/18645704?referrer=searchResults
