Three-phase, 400 V (line voltage), 60 Hz, 6-pole, star-connected synchronous generator has a synchronous reactance of 1.2 ohms per phase. The armature current of the generator at full load is 64 A at a back power factor of 0.95. This generator has a rotational loss of 2 kW and a core loss of 1.6 kW at full load. The excitation current is adjusted so that the output voltage is 400V (line voltage) when the generator is running at no load. When the generator is loaded with 0.95 back power factor current at full load A) Find the rotating field speed of the generator? B) Find the mechanical speed of the generator? C) What will be the output voltage? D) Find the yield? E) Calculate the voltage regulation?

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