10.7 A 3-phase, 1.6 MVA, 13.5 kV, star-connected Alternator has effective resistance and Synchronous reactance of 1.5 2 and 30 per phase. Calculate the percentage voltage regulation for a load of 1.28 MW at power-factors of (i) 0.8 lagging and (ii) 0.8 leading. [Ans: 18.59% -11.98%]
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