EEE 1131: Electrical Circuits - KUET 1131...Vol 1: Basic Electrical Engineering By B L Theraja and A...
Transcript of EEE 1131: Electrical Circuits - KUET 1131...Vol 1: Basic Electrical Engineering By B L Theraja and A...
EEE 1131: Electrical Circuits
Prepared By :
Md. Rezaur Raihan
Assistant Professor
Department of Electrical and Electronic Engineering
Khulna University of Engineering & Technology
Referrence Books
1. A Textbook of Electrical Technology.
Vol 1: Basic Electrical Engineering By B L Therajaand A K Theraja.
2. Introductory Circuit Analysis by Robert LBoylestad .
3. Fundamentals of Electric Circuits By Charles K.Alexander and Matthew N. O. Sadiku
Generation of Alternating Voltage
Generation of Alternating Voltage
Introduction
A sinusoid is a signal that has the form of the sine orcosine function.
A sinusoidal current is usually referred to as alternatingcurrent(ac).
Such a current reverses at regular time intervals and hasalternately positive and negative values. Circuits driven bysinusoidal current or voltage sources are called ac circuits.
Introduction
We are interested in sinusoids for a number of reasons.First, nature itself is characteristically sinusoidal.
We experience sinusoidal variation in the motion of apendulum, the vibration of a string, the ripples on theocean surface, and the natural response of underdampedsecond order systems, to mention but a few.
Second, a sinusoidal signal is easy to generate andtransmit. It is the form of voltage generated throughout
Introduction
Third, through Fourier analysis, any practical periodicsignal can be represented by a sum of sinusoids.Sinusoids, therefore, play an important role in the analysisof periodic signals.
Lastly, a sinusoid is easy to handle mathematically. Thederivative and integral of a sinusoid are themselvessinusoids. For these and other reasons, the sinusoid is anextremely important function in circuit analysis.
Sinusoids
Sinusoids
Graphical Approach to compare Sinusoids
Graphical Approach to compare Sinusoids
Numerical Problem
Numerical Problem
Numerical Problem
Numerical Problem