P 12.3-4 An unbalanced Y-Y circuit is shown in Figure P 12.3-4. Find the average power delivered to the load. 1002 5 mH 60 mH 100 cos (377) 100 cos (377: +120°) 100 cos 1052 1002 5 mH 5 mH 2012 A www B C 40 £2 M 600 40 mH 20 mH N

P 12.3-4 An unbalanced Y-Y circuit is shown in Figure P 12.3-4. Find the average power delivered to the load. 1002 5 mH 60 mH 100 cos (377) 100 cos (377: +120°) 100 cos 1052 1002 5 mH 5 mH 2012 A www B C 40 £2 M 600 40 mH 20 mH N

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

Chapter5: Transmission Lines: Steady-state Operation

Section: Chapter Questions

Problem 5.25MCQ

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Concept explainers

Maximum power transfer theorem

A resistive load will consume maximum power from a network when the load resistance is equal to the resistance of the network as viewed from the open-circuit terminals, with all energy sources removed leaving only the internal resistances. Physicist Moritz von Jacobi introduced the maximum power transfer theorem in 1940. Therefore, this theorem is also known as Jacobi's law.

Question

P 12.3-4 An unbalanced Y-Y circuit is shown in Figure
P 12.3-4. Find the average power delivered to the load.
1002 5 mH
60 mH
100 cos
(377)
100 cos
(377t +120°)
100 cos
(377: +240)
Source
1052
1002
5 mH
5 mH
Line
B
C
2012
40 £2
ww
60 Ω
w
40 mH
20 mH
Load
N

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