The impedance Z in the balanced three-phase cir- cuit in Fig. P11.19 is 100 – j75 N. Find a) IAB, IBC, and Ica- b) IaA, IbB, and Icc, c) Iba, Icb, and Igc- LA 13.2/–120° kV | 13.2/0° kV Z b B 13.2/120° kV

Power System Analysis and Design (MindTap Course List)
6th Edition
ISBN:9781305632134
Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Chapter2: Fundamentals
Section: Chapter Questions
Problem 2.18P: Let a series RLC network be connected to a source voltage V, drawing a current I. (a) In terms of...
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3G
ll Asiacell
K/s
sheet - 3 phas..
Q-1
The impedance Z in the balanced three-phase cir-
cuit in Fig. P11.19 is 100 – j75 N. Find
a) IAB, IBC, and Ica,
b) Iaa, IbB, and Icc,
c) Ipa, Icb, and Ige-
LA
a
13.2/-120° kV
13.2/0° kV ( Z
B
13.2/120° kV
О-2
For the circuit shown in Fig. below , find
a) the phase currents IAB, IBC, and IcA
b) the line currents IA, IbB, and Ic
when Z1 = 2.4 – j0.7 N, Z = 8 + j6 N, and
Zz = 20 + j0 N.
a
480/-120° V
480/0° V
Z3
B
480/120° V
Q-3
a) Find the reading of each wattmeter in the circuit
shown in Fig. below
ZB = 60 /0° N, and Zc = 40/–30" N.
if ZA = 20 /30° N,
b) Show that the sum of the wattmeter readings
equals the total average power delivered to the
unbalanced three-phase load.
| 240/0° V
ZA
n.
Zc
240/120° V
ZB
240/–120° V
Wm2
Q-4
. a) Calculate the reading of each wattmeter in the
Transcribed Image Text:3G ll Asiacell K/s sheet - 3 phas.. Q-1 The impedance Z in the balanced three-phase cir- cuit in Fig. P11.19 is 100 – j75 N. Find a) IAB, IBC, and Ica, b) Iaa, IbB, and Icc, c) Ipa, Icb, and Ige- LA a 13.2/-120° kV 13.2/0° kV ( Z B 13.2/120° kV О-2 For the circuit shown in Fig. below , find a) the phase currents IAB, IBC, and IcA b) the line currents IA, IbB, and Ic when Z1 = 2.4 – j0.7 N, Z = 8 + j6 N, and Zz = 20 + j0 N. a 480/-120° V 480/0° V Z3 B 480/120° V Q-3 a) Find the reading of each wattmeter in the circuit shown in Fig. below ZB = 60 /0° N, and Zc = 40/–30" N. if ZA = 20 /30° N, b) Show that the sum of the wattmeter readings equals the total average power delivered to the unbalanced three-phase load. | 240/0° V ZA n. Zc 240/120° V ZB 240/–120° V Wm2 Q-4 . a) Calculate the reading of each wattmeter in the
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