Power electronics essentially deals with control of a.c. power at____________?
Correct answer: D. 50 Hz frequency
- A. Frequencies above 20 kHz
- B. Frequencies above 1000 kHz
- C. Frequencies less than 10 Hz
- D. 50 Hz frequency
Explanation
In conventional power-system applications, power electronics controls and converts AC power at the supply frequency, commonly 50 Hz, using semiconductor switches. The other frequency ranges do not represent the usual utility AC frequency in this context.
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