4. A 3-phase transformer, ratio 33/6.6-kV, A/Y, 2-MVA has a primary resistance of 89 per phase and a secondary resistance of 0.08 ohm per phase. The percentage impedance is 7%. Calculate the secondary load voltage with rated primary voltage and hence the regulation for full-load 0.75 p.f. lagging conditions.

4. A 3-phase transformer, ratio 33/6.6-kV, A/Y, 2-MVA has a primary resistance of 89 per phase and a secondary resistance of 0.08 ohm per phase. The percentage impedance is 7%. Calculate the secondary load voltage with rated primary voltage and hence the regulation for full-load 0.75 p.f. lagging conditions.

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

Chapter3: Power Transformers

Section: Chapter Questions

Problem 3.9P

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