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1. A 3-phase, eight pole, star- connected alternator is rated at 4.0 MVA, 11.5 kV. The armature resistance is 30 and synchronous reactance is

1. A 3-phase, eight pole, star- connected alternator is rated at 4.0 MVA, 11.5 kV. The armature resistance is 30 and synchronous reactance is 152 per phase. Calculate the percentage voltage regulation for half the rated load at 0.707 pf lagging Develop the phasor diagram from above calculations. (5Marks)

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