6th Edition

ISBN: 9780078028229

Author: Charles K Alexander, Matthew Sadiku

Publisher: McGraw-Hill Education

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Alternating Current (AC) is a type of electric power in which the electric current changes, both in magnitude and direction, at regular intervals. This AC Circuits can deliver power in either a Single Phase system or a Three Phase system.

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Textbook Question

Chapter 12.4, Problem 3PP

One line voltage of a balanced Y-connected source is V A B = 120 ∠ − 20 ° V . If the source is connected to a Δ-connected load of 20 ∠ 40 ° Ω , find the phase and line currents. Assume the abc sequence.

Answer: 6 ∠ − 60 ° A , 6 ∠ − 180 ° A , 6 ∠ 60 ° A , 10.392 ∠ − 90 ° A , 10.392 ∠ 150 ° A , 10.392 ∠ 30 ° A .

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Chapter 12.3, Problem 2PP

Chapter 12.5, Problem 4PP

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Chapter 12 Solutions

Fundamentals of Electric Circuits

Ch. 12.2 - Given that Vbn=22030V, find Van and Vcn, assuming...Ch. 12.3 - A Y-connected balanced three-phase generator with...Ch. 12.4 - One line voltage of a balanced Y-connected source...Ch. 12.5 - A positive-sequence, balanced -connected source...Ch. 12.6 - In a balanced -Y circuit, Vab=44015 and ZY = (12 +...Ch. 12.7 - For the Y-Y circuit in Practice Prob. 12.2,...Ch. 12.7 - Calculate the line current required for a 30-kW...Ch. 12.7 - Assume that the two balanced loads in Fig....Ch. 12.8 - The unbalanced -load of Fig. 12.24 is supplied by...Ch. 12.8 - Find the line currents in the unbalanced...

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Solution Summary: The author explains how to find phase and line currents. Balanced Y-connected source phase voltage (I_AB) is 120°

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Chapter 12 Solutions