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%]

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%]

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter7: Symmetrical Faults

Section: Chapter Questions

Problem 7.3MCQ: The amplitude of the sinusoidal symmetrical ac component of the three-phase short-circuit current of...

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Question

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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