4. During a short-circuit test on a 10 MVA, 66 kV/7.2 kV transformer (see Figure below), the following results were obtained: Eg = 2640 V, Isc = 75 A, Psc = 10 kW. Calculate the following: (1) The total resistance and the total leakage reactance referred to the 66 kV primary side. (2) If the iron losses at rated voltage are 30 kW, calculate the full-load efficiency of the transformer if the power factor of the load is 90 percent. Eg Psc Isc Esc CH, X, H₂ T

4. During a short-circuit test on a 10 MVA, 66 kV/7.2 kV transformer (see Figure below), the following results were obtained: Eg = 2640 V, Isc = 75 A, Psc = 10 kW. Calculate the following: (1) The total resistance and the total leakage reactance referred to the 66 kV primary side. (2) If the iron losses at rated voltage are 30 kW, calculate the full-load efficiency of the transformer if the power factor of the load is 90 percent. Eg Psc Isc Esc CH, X, H₂ T

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 3.11MCQ: For a short-circuit test on a 2-winding transformer, with one winding shorted, can you apply the...

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