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1. |
In railway electrification, the voltage and frequency, respectively, of the three-phase AC system are: |
A. | 25 kV and 50 Hz |
B. | 3 to 3.5 kV and \(16 {2 \over 3}\) Hz |
C. | 1500 V and 50 Hz |
D. | 600 V and 50 Hz |
Answer» C. 1500 V and 50 Hz | |