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Network TheoryThree-Phase Circuits

In a balanced three-phase delta-connected load, the relation between line current IL and phase current Iph is?

  • AIL=Iph
  • BIL=√3 Iph
  • CIL=3Iph
  • DIL=Iph/√3
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Correct Answer: B. IL=√3 Iph
Explanation: For a balanced delta connection, line current magnitude is √3 times phase current magnitude.
Reference: Standard network theory: three-phase circuits
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