MCQOPTIONS
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| 1. |
A separately excited DC motor is energised from a 440 V, 50 Hz, 3 ϕ full converter. The input voltage to the motor for a firing angle of 45°, in volts, is: |
| A. | 420 |
| B. | 297 |
| C. | 390 |
| D. | 260 |
| Answer» B. 297 | |