Question:medium

If the locus of minimum armature currents of V-curves of synchronous motor is a straight line, then the slope of the line is

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The locus of minimum armature currents is also called the Unity Power Factor Locus. As load increases, both $I_a$ and $I_f$ must increase to maintain $\cos\theta = 1$. Since both variables grow together, the slope is always positive.
Updated On: Jun 25, 2026
  • \( \text{positive} \)
  • \( \text{negative} \)
  • \( \text{zero} \)
  • \( \text{infinite} \)
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The Correct Option is A

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