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The per-phase DC armature resistance of an alternator is 0.5 ohm. The effective AC armature resistance would be about?

  • The per-phase DC armature resistance of an alternator is 0.5 ohm. The effective AC armature resistance would be about 0.75 ohms.
  • It is common practice to assume the AC armature resistance is 1.5 times the DC resistance.
  • Given the DC armature resistance is 0.5 ohms, the effective AC armature resistance would be approximately 0.75 ohms (1.5 x 0.5).