(i) A N VCN3 C (ii) VAN = 240 V/0° rms = VBN = 240 V/-120° rms ellee B 240 V/120° rms Z 3 12 mH = 1000 (iii) Z = Z a n N b 3Ω 12 ΜΗ H

Introductory Circuit Analysis (13th Edition)
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ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
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The figure below shows a 60-Hz balanced star-star three-phase circuit.
(a) For the equivalent circuits of the load impedance Z shown in (ii), calculate the load impedance Z, the line current IA, the power factor, and the total average power delivered to the three-phase load.
(b) The power factor is corrected to 1.00 by inserting a capacitance in parallel to the resistive and inductive load as shown in (iii). Determine the capacitance value C.

(i)
A
N
VCN3
C
(ii)
VAN
=
240 V/0° rms
=
VBN =
240 V/-120° rms
ellee
B
240 V/120° rms
Z
3 12 mH
= 1000
(iii)
Z
=
Z
a
n
N
b
3Ω 12 ΜΗ
H
Transcribed Image Text:(i) A N VCN3 C (ii) VAN = 240 V/0° rms = VBN = 240 V/-120° rms ellee B 240 V/120° rms Z 3 12 mH = 1000 (iii) Z = Z a n N b 3Ω 12 ΜΗ H
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