In a 3 phase bridge rectifier the ripple frequency is _____________?
Correct answer: D. Six times the input frequency
- A. Equal to the input frequency
- B. Twice the input frequency
- C. Three times the input frequency
- D. Six times the input frequency
Explanation
A three-phase bridge is a six-pulse rectifier, so six ripple peaks occur in every input cycle. Therefore, the ripple frequency is six times the AC supply frequency.
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