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Which of the following parameter is plotted on x-axis in V-curves of synchronous motor?

  • A.Armature current
  • B.Field current
  • C.Power factor
  • D.Load

Answer: B

In the V-curves of a synchronous motor, the field current is plotted on the x-axis and the armature current on the y-axis, with a separate curve for each constant load.

The armature current is the quantity on the vertical axis, and the power factor is on the vertical axis in the inverted V-curves. The load is held constant for each curve. So the second option is the answer.

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