[04]: 3KVA 380/110V, 50Hz, Y/Y connected three-phase tr-r with per unity impedances referred to secondary of (0.04+j0. 09) pu . The tr-r opertes at its 80% of rated capacity with 0.86 lagging power factor. The no-load losses is Pocpu=1%. Determine: 1. the equivalent circuit impedance referred to secondary in Ohms 2. the voltage regulation in per unity approach. 3. the tr-r efficiency. 4. plot the phasor diagram.

[04]: 3KVA 380/110V, 50Hz, Y/Y connected three-phase tr-r with per unity impedances referred to secondary of (0.04+j0. 09) pu . The tr-r opertes at its 80% of rated capacity with 0.86 lagging power factor. The no-load losses is Pocpu=1%. Determine: 1. the equivalent circuit impedance referred to secondary in Ohms 2. the voltage regulation in per unity approach. 3. the tr-r efficiency. 4. plot the phasor diagram.

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

Chapter2: Fundamentals

Section: Chapter Questions

Problem 2.13MCQ

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