Engineering Board Exam Reviewer · Three-Phase Systems in Power Applications · easy

The three voltages of a balanced three-phase supply are displaced from each other by

  1. 90°
  2. 60°
  3. 180°
  4. 120°

Answer

D. 120°

Solution

A balanced three-phase system has three equal-magnitude voltages spaced 360°/3=120° apart.

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