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Power ElectronicsAC Voltage Controllers

An AC voltage controller converts?

  • AFixed-frequency AC to variable-magnitude AC at the same basic frequency
  • BDC to AC
  • CAC directly to pure DC only
  • DDC to DC
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Correct Answer: A. Fixed-frequency AC to variable-magnitude AC at the same basic frequency
Explanation: An AC voltage controller regulates the RMS AC output, commonly by phase or integral-cycle control, while retaining the supply's fundamental frequency.
Reference: Standard power electronics: ac voltage controllers
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