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(b) For a balanced three-phase star load connected system, it is measured that the magnitude of the voltage drops at the single-phase load is 200 V and the current flows in the same load is 10 2– 10° A. By considering positive sequence : (i) Calculate the phase load impedance, Z and express it in polar form. (i) Draw the impedance triangle for the load. State either this load is inductive or capacitive. (iii) Identify the phase voltages (VaN. VyN and VaN )- (iv) Identify the line currents (Ig, ly and la ). (v) Identify the line voltages (VRy, Vys and VaR ). (vi) Sketch the phasor diagram for the phase and line voltages.

(b) For a balanced three-phase star load connected system, it is measured that the magnitude of the voltage drops at the single-phase load is 200 V and the current flows in the same load is 10 2– 10° A. By considering positive sequence : (i) Calculate the phase load impedance, Z and express it in polar form. (i) Draw the impedance triangle for the load. State either this load is inductive or capacitive. (iii) Identify the phase voltages (VaN. VyN and VaN )- (iv) Identify the line currents (Ig, ly and la ). (v) Identify the line voltages (VRy, Vys and VaR ). (vi) Sketch the phasor diagram for the phase and line voltages.

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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Solve parts (iv),(v) & (vi)

(b) For a balanced three-phase star load connected system, it is measured that the magnitude of the voltage drops at the single-phase load is 200 V and the current flows in the same load is 10 2– 10° A. By considering positive sequence : (i) Calculate the phase load impedance, Z and express it in polar form. (i) Draw the impedance triangle for the load. State either this load is inductive or capacitive. (iii) Identify the phase voltages (VaN. VyN and VaN )- (iv) Identify the line currents (Ig, ly and la ). (v) Identify the line voltages (VRy, Vys and VaR ). (vi) Sketch the phasor diagram for the phase and line voltages.
Transcribed Image Text:(b) For a balanced three-phase star load connected system, it is measured that the magnitude of the voltage drops at the single-phase load is 200 V and the current flows in the same load is 10 2– 10° A. By considering positive sequence : (i) Calculate the phase load impedance, Z and express it in polar form. (i) Draw the impedance triangle for the load. State either this load is inductive or capacitive. (iii) Identify the phase voltages (VaN. VyN and VaN )- (iv) Identify the line currents (Ig, ly and la ). (v) Identify the line voltages (VRy, Vys and VaR ). (vi) Sketch the phasor diagram for the phase and line voltages.
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