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(b) The unbalanced four wire Y-connected load has balanced voltages of 415 V and the RYB-sequence. By taking VRN as reference, with the load impedances are ZR = 25 2, Zy = (20 +j15) Q, Z (40-j30) 2. (i) Sketch the three-phase circuit with three wattmeter connection to measure the real power in the system, (ii) Calculate the line currents and neutral currents. (iii) Calculate the wattmeter readings and find the total power absorbed by the load. (iv) Can two-wattmeter method be used to measure the real power for the system ? Justify your answer. UTM

(b) The unbalanced four wire Y-connected load has balanced voltages of 415 V and the RYB-sequence. By taking VRN as reference, with the load impedances are ZR = 25 2, Zy = (20 +j15) Q, Z (40-j30) 2. (i) Sketch the three-phase circuit with three wattmeter connection to measure the real power in the system, (ii) Calculate the line currents and neutral currents. (iii) Calculate the wattmeter readings and find the total power absorbed by the load. (iv) Can two-wattmeter method be used to measure the real power for the system ? Justify your answer. UTM

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
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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(b) The unbalanced four wire Y-connected load has balanced voltages of 415 V and the RYB-sequence. By taking VRN as reference, with the load impedances are ZR = 25 2, Zy = (20 +j15) Q, Zg = (40 – j30) 2. (i) Sketch the three-phase circuit with three wattmeter connection to measure M the real power in the system, (ii) Calculate the line currents and neutral currents. (iii) Calculate the wattmeter readings and find the total power absorbed by the load. "T (iv) Can two-wattmeter method be used to measure the real power for the system ? Justify your answer.
Transcribed Image Text:(b) The unbalanced four wire Y-connected load has balanced voltages of 415 V and the RYB-sequence. By taking VRN as reference, with the load impedances are ZR = 25 2, Zy = (20 +j15) Q, Zg = (40 – j30) 2. (i) Sketch the three-phase circuit with three wattmeter connection to measure M the real power in the system, (ii) Calculate the line currents and neutral currents. (iii) Calculate the wattmeter readings and find the total power absorbed by the load. "T (iv) Can two-wattmeter method be used to measure the real power for the system ? Justify your answer.
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