Question: A three - phase, star - connected, 1 0 kVA, 2 3 0 V alternator has an armature resistance of 0 . 5 Ohm per

A three-phase, star-connected, 10 kVA, 230V alternator has an armature resistance of 0.5 Ohm per phase and a synchronous reactance of 1.2 Ohms per phase. Calculate the percent voltage regulation at full load at power factors of (a)0.8 lagging, [10 Marks](b)0.8 leading, [5 Marks](c) Determine the power factor such that the voltage regulation becomes zero on full load.

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