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Network TheoryStar-Delta Networks

A balanced delta network has each resistance equal to 12 ohm. Each arm of its equivalent balanced star network is?

  • A3 ohm
  • B4 ohm
  • C6 ohm
  • D36 ohm
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Correct Answer: B. 4 ohm
Explanation: For a balanced delta-to-star conversion, each star resistance equals one-third of the delta resistance: 12/3 = 4 ohm.
Reference: Standard network theory: star-delta networks
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