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Network TheoryThree-Phase Circuits

For a balanced three-phase delta-connected load, the phase voltage is related to line voltage by?

  • AVph=VL
  • BVph=VL/sqrt(3)
  • CVph=sqrt(3)VL
  • DVph=3VL
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Correct Answer: A. Vph=VL
Explanation: In a balanced delta connection, each phase is connected directly across two lines, so phase voltage equals line voltage.
Reference: Standard network theory: delta connection
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