What is the effect of demagnetizing component of armature reaction?(a) Reduces generator emf(b) Increases armature speed(c) Reduces interpole flux density(d) Results in sparking troubleThe question was asked in a job interview.This is a very interesting question from Armature Reaction -1 topic in portion Armature Reaction of DC Machines

What is the effect of demagnetizing component of armature reaction?(a)

1.	What is the effect of demagnetizing component of armature reaction?(a) Reduces generator emf(b) Increases armature speed(c) Reduces interpole flux density(d) Results in sparking troubleThe question was asked in a job interview.This is a very interesting question from Armature Reaction -1 topic in portion Armature Reaction of DC Machines
Answer» CORRECT choice is (a) Reduces generator emf The BEST I can explain: When the armature of a dc machine CARRIES current, the distributed armature winding produces its own mmf (distributed) known as armature reaction. The demagnetizing COMPONENT ACTS in the opposite direction, reducing flux/pole in a machine, which will ultimately reduce generator emf.

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