Direct conversion of heat into electric power is possible through__________?
Correct answer: C. thermionic converter
- A. fuel cell
- B. batteries
- C. thermionic converter
- D. all of the above
Explanation
A thermionic converter directly changes heat into electrical energy through thermionic emission of electrons from a heated emitter. Fuel cells and batteries convert chemical energy, so they are not direct heat-to-electric converters.
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