In phase-shift control method the control is carried out by varying the of grid voltage
Correct answer: C. phase
- A. magnitude
- B. polarity
- C. phase
- D. any of the above
- E. none of the above
Explanation
Phase-shift control changes the firing instant relative to the AC waveform, so the effective phase of the applied grid voltage is varied. Its magnitude and polarity are not the controlled quantities in this method.
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