(b) An unbalanced Y-connected load has balanced voltage of 190 V and positive phase sequence. The impedance Za, ZB and Zc are 20230° Q, 40260° N, and 102–90° Q respectively. (i) Taking line voltage VAB on the load side as a reference, determine all line currents and phase voltages. (ii) Determine total active power (P) and reactive power (Q). (iii) The two-wattmeter method is used to measure the total active power received by the loads. Draw the connection of the two wattmeters if their current coils are in line A and C respectively. What is the total power measured by each wattmeter, W1 and W2? Compare your answer with Q.1(b)(ii).

(b) An unbalanced Y-connected load has balanced voltage of 190 V and positive phase sequence. The impedance Za, ZB and Zc are 20230° Q, 40260° N, and 102–90° Q respectively. (i) Taking line voltage VAB on the load side as a reference, determine all line currents and phase voltages. (ii) Determine total active power (P) and reactive power (Q). (iii) The two-wattmeter method is used to measure the total active power received by the loads. Draw the connection of the two wattmeters if their current coils are in line A and C respectively. What is the total power measured by each wattmeter, W1 and W2? Compare your answer with Q.1(b)(ii).

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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