| 21. | The point where the AC line voltage is 0 V is the " Zero Cross Point ".
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| 22. | In this configuration, output currents are in phase with line voltages to produce a unity power factor.
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| 23. | They used motor-generator sets to rectify the alternating current line voltage into direct current for their traction motors.
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| 24. | An AFCI does not detect high line voltage due to an open neutral in a multiwire branch circuit.
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| 25. | These are often used in repair shops for testing devices under different voltages or to simulate abnormal line voltages.
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| 26. | The torque is thus proportional to the instantaneous line voltage times the instantaneous load current, automatically correcting for power factor.
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| 27. | For instance, there will almost always be a brief decrease in line voltage, which will signal a potential fault condition.
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| 28. | In Europe, and most 220-240 V territories, the line voltage is sufficient to start lamps over 20W with a series inductor.
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| 29. | Conversely, VAR compensation is possible in a similar configuration where output currents lead line voltages to improve the overall power factor.
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| 30. | This relationship results in greater acceleration energy to a higher motor speed and less disturbance at changeover to full line voltage.
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