Which of the following mercury arc rectifier will deliver least undulating current?
Correct answer: A. Six-phase
- A. Six-phase
- B. Three-phase
- C. Two-phase
- D. Single-phase
Explanation
A six-phase rectifier produces six voltage pulses per cycle, so the intervals between pulses are shortest and the output ripple is least. Single- and two-phase arrangements produce much more undulating current.
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