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[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.

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
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[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.
Transcribed Image Text:[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.
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