Calculate the all-day efficiency of a 100-KVA transformer operating under the following conditions: 6 hour, 50 kW, 0.73 pf 3 hours, 90 kW, 0.82 pf Iron loss = 1000 watts One quarter load Copper loss = 66.25 watts a) The rest of the day, transformer running idle b) The rest of the day, primary disconnected from the source.

Calculate the all-day efficiency of a 100-KVA transformer operating under the following conditions: 6 hour, 50 kW, 0.73 pf 3 hours, 90 kW, 0.82 pf Iron loss = 1000 watts One quarter load Copper loss = 66.25 watts a) The rest of the day, transformer running idle b) The rest of the day, primary disconnected from the source.

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 3.16MCQ: In developing per-unit circuits of systems such as the one shown in Figure 3.10. when moving across...

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