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If two alternators A and B are operated in parallel having per unit synchronous reactance as 0.02 ohms and 0.05 ohms respectively.Then what the ratio of contributing loading of machine A to B?

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If two alternators A and B are operated in parallel having per unit synchronous reactance as 0.02 ohms and 0.05 ohms respectively.Then what the ratio of contributing loading of machine A to B?

(a) 2.5

(b) 0.4

(c) 1

(d) can not be operated in parallel

I had been asked this question in an interview for job.

This is a very interesting question from Machine Ratings topic in chapter Rating and Loss Dissipation of Electrical Machines

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The correct answer is (a) 2.5

Best explanation: The load shared by the alternators is inversely related to their pu reactance.

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