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The short circuit characteristic of alternator is a straight line due to __________

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The short circuit characteristic of alternator is a straight line due to __________

(a) no saturation

(b) no armature reaction

(c) no eddy current

(d) all of the mentioned

This question was addressed to me during an online interview.

I'm obligated to ask this question of Phasor Diagram of a Cylindrical Rotor Alternator topic in division Synchronous Generators of Electrical Machines

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The correct answer is (a) no saturation

For explanation: At the short circuit of the alternator is having the linear relation as the armature does not enter the saturation mode due to demagnetizing nature of armature reaction.

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