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Electric Circuit Analysis by K. S. Suresh Kumar

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Chapter 8

Sinusoidal Steady-State in Three-Phase Circuits

CHAPTER OBJECTIVES
  • To define and explain balanced and unbalanced three-phase systems and to extend the concepts of active power, reactive power and complex power to such systems.
  • To develop and employ relations between line and phase quantities in Y-connected and Δ-connected three-phase circuits.
  • To emphasize constraints on line quantities in three-phase three-wire and four-wire systems.
  • To develop a systematic procedure to analyse sinusoidal steady-state in three-phase balanced circuits using Y-equivalent and single-phase equivalent circuits.
  • To show how to use phasors, phasor equivalent circuits and phasor diagrams for solving three-phase circuits under sinusoidal steady-state condition. ...

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