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Assignment: A three phase Y-connected synchronous generator is rated 120MVA, 13.2kV, 0.8 PF lagging and 60Hz. Its synchronous reactance is 0.7 ohm,

A three phase Y-connected synchronous generator is rated 120MVA, 13.2kV, 0.8 PF lagging and 60Hz. Its synchronous reactance is 0.7 ohm, and other elements may be ignored.

(i) What is the voltage regulation?
(ii) What would be the voltage and apparent power rating pf this generator be if it were operated at 50Hz frequency with the same armature and field losses?
(iii)What would the voltage regulation of the generator be at 50Hz?
Assignment: A three phase Y-connected synchronous generator is rated 120MVA, 13.2kV, 0.8 PF lagging and 60Hz. Its synchronous reactance is 0.7 ohm, and other elements may be ignored. (i) What is the voltage regulation? (ii) What would be the voltage and apparent power rating pf this generator be if it were operated at 50Hz frequency with the same armature and field losses? (iii)What would the voltage regulation of the generator be at 50Hz?
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This question was asked on Apr 26, 2010.

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