The slight curvature at the lower end of the O.C.C. of a self-excited dc generator is due to

The slight curvature at the lower end of the O.C.C. of a self-excited dc generator is due to 

1. residual pole flux 2. high armature speed 3.magnetic inertia 4. high field circuit resistance
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1 Answer

Answer :

The slight curvature at the lower end of the O.C.C. of a self-excited dc generator is due to magnetic inertia

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