Two parallel three-phase loads are supplied from 415.7 V rms, 60 Hz three-phase supply. The loads are as follows: Load 1: Y-connected with an impedance of (80 -j 60) Q/ phase Load 2: Delta-connected with an impedance of (48 + j 36) 0/ phase Taking Van as phase reference, determine the power factor of the combined load and the line current in phase a. Select one: O a. Pf= 0.89 (lagging); la 12.87 <-26.5° A b. Pf= 0.982 (lèading); la = 5.209 <+10.418° A O c. Pf= 0.89 (leading); la = 12.87 <+26.5° A O d. Pf= 0.89 (leading); la = 7.415 <+26.5° A Oe. Pf= 0.982 (lagging); la = 5.209 <-10.418° A O f. Pf3 0.982 (leading); la = 3.007 <+10.418° A g. None of these

Two parallel three-phase loads are supplied from 415.7 V rms, 60 Hz three-phase supply. The loads are as follows: Load 1: Y-connected with an impedance of (80 -j 60) Q/ phase Load 2: Delta-connected with an impedance of (48 + j 36) 0/ phase Taking Van as phase reference, determine the power factor of the combined load and the line current in phase a. Select one: O a. Pf= 0.89 (lagging); la 12.87 <-26.5° A b. Pf= 0.982 (lèading); la = 5.209 <+10.418° A O c. Pf= 0.89 (leading); la = 12.87 <+26.5° A O d. Pf= 0.89 (leading); la = 7.415 <+26.5° A Oe. Pf= 0.982 (lagging); la = 5.209 <-10.418° A O f. Pf3 0.982 (leading); la = 3.007 <+10.418° A g. None of these

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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