The graph represents three-phase synchronous motor, and it is a plot between which of the following?

F3 Vinanti Engineering 09.01.23 D4

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  1. Armature current and armature resistance
  2. Armature current and field current
  3. Armature current and power factor 
  4. Field current and power factor

Answer (Detailed Solution Below)

Option 2 : Armature current and field current
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Detailed Solution

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 V curve:

  • The V curve shows the relationship between field current (If) and armature current (Ia)
  • The field current is plotted on the x-axis whereas the armature current is plotted on the y-axis.

 

V curve for synchronous motor:

620cfae6e82d7be26b539ec5 16508953868521

V curve for synchronous generator:

620cfae6e82d7be26b539ec5 16508953868632

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