In a three phase overhead system, each line is suspended by a string of three insulator. The voltage across top unit and the middle unit are 7 kV and 10 kV respectively. Calculate, a) Line voltage. b) String efficiency

In a three phase overhead system, each line is suspended by a string of three insulator. The voltage across top unit and the middle unit are 7 kV and 10 kV respectively. Calculate, a) Line voltage. b) String efficiency

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

Chapter3: Power Transformers

Section: Chapter Questions

Problem 3.33P: Consider the three single-phase two-winding transformers shown in Figure 3.37. The high-voltage...

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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.

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