When a 3-phase synchronous generator is supplying a zero power factor lagging load, the armature field affects the main field in the following way
Correct answer: B. directly opposes it
- A. augments it directly
- B. directly opposes it
- C. cross-magnetises it
- D. none of the above
Explanation
At zero power factor lagging, the armature reaction of an alternator is purely demagnetising. It directly opposes the main rotor field instead of producing a cross-magnetising effect.
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