Question

Two alternators A and B are operating in parallel stably. If the input power to the alternator A is reduced, then,

Answer 1

1) when input power of one alternator is reduced then armature current of that alternator is decreases and therfore terminal voltage of two alternator created phase inbalance

2) due to diffrent voltage of of generator the circulating current is flow from high potetial armature to low potential armature

3) output power is directly propostional to input power and also output pwoer is directly propostional to (sin of powe angle) since input power is reduced the power angle is reduced.

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