Question: Question # 0 2 ( 2 0 ) A 3 - phase, 1 2 0 MVA, 1 3 . 8 kV , 0 . 8

Question # 02(20)
A 3-phase, 120 MVA, 13.8 kV,0.8 PF lagging, 60 Hz and Y connected synchronous generator has synchronous reactance of 1.2 per phase, and its armature resistance is 1 per phase.
a) Determine the voltage regulation at rated conditions.
b) Determine the voltage and apparent power rating if this generator is operated at 50 Hz with the same armature and field losses as it had at 60 Hz.

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