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Power ElectronicsThree-Phase Rectifiers

The ripple frequency at the DC output of a six-pulse three-phase bridge supplied from 50 Hz is?

  • A50 Hz
  • B100 Hz
  • C300 Hz
  • D600 Hz
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Correct Answer: C. 300 Hz
Explanation: A six-pulse bridge produces six output pulses per AC cycle, so ripple frequency=6×50=300 Hz.
Reference: Standard power electronics: three-phase rectifiers
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