| 21. | World's Fair in Chicago, part of their " Tesla Poly-phase System ".
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| 22. | Three-phase systems may also have a fourth wire, particularly in low-voltage distribution.
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| 23. | Usually analysis of a three-phase system is simplified by assuming balanced loading of all three phases.
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| 24. | In all cases, three-phase systems will handle more power and operate a bit more smoothly.
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| 25. | This three-wire single phase system is common in North America for residential and light commercial applications.
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| 26. | The technique of symmetrical components is used to simplify analysis of unsymmetrical faults in three-phase systems.
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| 27. | For example, the free-molecular kernel which describes collisions in a dilute gas-phase system,
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| 28. | In 120 / 208 three-phase system, the neutral is the center of the wye transformer.
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| 29. | While planning for the second phase, the Master Plan was changed and the phase system was discontinued.
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| 30. | He did this by calculating Avogadro's number using three different methods, all involving liquid phase systems.
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