Q.The magnetic field which initially induces emf in the armature in a self excited dc generator is because of 

  • APermanent magnets
  • BArmature rotation 
  • CResidual magnetism
  • DNone of the above
Correct Answer : (C)

Residual magnetism

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The magnetic field which initially induces emf in the armature in a self excited dc generator is because of Residual magnetism.

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