The V-curve of a synchronous motor is drawn between -

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RSMSSB JE Electrical/Mechanical 2020 Official Paper (Diploma): Held on 26 Dec 2020
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  1. Field current and back e.m.f.
  2. Field current and power factor
  3. Field current and armature current
  4. Supply voltage and armature current

Answer (Detailed Solution Below)

Option 3 : Field current and armature 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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