MCQOPTIONS
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| 1. |
A six pulse thyristor rectifier bridge is connected t o a balanced 50 Hz, three phase ac source. Assuming that the dc output current of the rectifier is constant, the lowest frequency harmonic component in the ac source line current is ______ Hz |
| A. | 150 |
| B. | 250 |
| C. | 450 |
| D. | 550 |
| Answer» C. 450 | |