Armature reaction of an unsaturated D.C. machine is crossmagnetising.
Description : Define armature reaction in an alternator. Explain the effect of armature reaction at various P.F. of loads of alternator.
Description : In a 3 -phase alternator, if there is only magnetizing armature reaction, the load is : (A) capacitive (B) inductive (C) resistive (D) inductive and resistive
Description : What is the effect of armature reaction? A) Demagnetization of the main field B) Demagnetization of the brushes C) Cross-magnetization of the brushes D) None of these