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Network TheoryStar-Delta Networks

A balanced star network has each arm equal to 6 ohm. Each resistance of its equivalent balanced delta network is?

  • A2 ohm
  • B6 ohm
  • C12 ohm
  • D18 ohm
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Correct Answer: D. 18 ohm
Explanation: For a balanced star-to-delta conversion, each delta resistance is 3 times the star resistance: 3×6 = 18 ohm.
Reference: Standard network theory: star-delta networks
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