Q12. The 8.C and S.C test data are given below for a single phase, 5 kVA, 200V/400V, 50HZ transformer. O.C test- Voltmeter reading: 200 V, Ammeter reading: 1.25 A, wattmeter reading: 100 W S.C test- Voltmeter reading:20 V, Ammeter reading: 12.5A, wattmeter reading: 145 W Calculate (A) No-load losses (B) Full load copper losses (C) Efficiency for full load at 0.9 power factor.

Q12. The 8.C and S.C test data are given below for a single phase, 5 kVA, 200V/400V, 50HZ transformer. O.C test- Voltmeter reading: 200 V, Ammeter reading: 1.25 A, wattmeter reading: 100 W S.C test- Voltmeter reading:20 V, Ammeter reading: 12.5A, wattmeter reading: 145 W Calculate (A) No-load losses (B) Full load copper losses (C) Efficiency for full load at 0.9 power factor.

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 3.10P: A single-phase step-down transformer is rated 13MVA,66kV/11.5kV. With the 11.5 kV winding...

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