Question: A small thermal power plant has a 3 - phase, 2 MVA, 2 0 kV , four - pole, 5 0 Hz , star -

A small thermal power plant has a 3-phase, 2 MVA, 20 kV, four-pole, 50 Hz, star-connected synchronous generator which has negligible stator winding resistance and a synchronous reactance of 100 per phase at rated terminal voltage. The generator runs in parallel with a 3-phase, 20 kV,50 Hz infinite bus. The machine is delivering rated kVA at 0.9 PF lagging. Determine: (a) The excitation voltage.

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