INTRODUCTION TO ELECTRICAL ENGINEERING
aim of this blog is to introduce electrical engineering. The chapter is
organized to provide the newcomer with a view of the different specialties
making up electrical engineering and to place the intent and organization
of the book into perspective. Perhaps the first question that surfaces in the
mind of the student approaching the subject is, Why electrical engineering? Since
this book is directed at a readership having a mix of engineering backgrounds
(including electrical engineering), the question is well justified and deserves some
discussion. The chapter begins by defining the various branches of electrical engi-
neering, showing some of the interactions among them, and illustrating by means
of a practical example how electrical engineering is intimately connected to many
other engineering disciplines. In the second section, mechatronic systems engi-
neering is introduced, with an explanation of how this book can lay the foundation
for interdisciplinary mechatronic product design. This design approach is illus-
trated by an example. The next section introduces the Engineer-in-Training (EIT)
national examination. A brief historical perspective is also provided, to outline the
growth and development of this relatively young engineering specialty. Next, the
fundamental physical quantities and the system of units are defined, to set the stage
for the chapters that follow. Finally, the organization of the book is discussed, to
give the student, as well as the teacher, a sense of continuity in the development
of the different subjects covered in Chapters 2 through 18.
ELECTRICAL ENGINEERING:-
The typical curriculum of an undergraduate electrical engineering student includes
the subjects listed in Table 1.1. Although the distinction between some of these
subjects is not always clear-cut, the table is sufficiently representative to serve our
purposes. Figure 1.1 illustrates a possible interconnection between the disciplines
of Table 1.1. The aim of this book is to introduce the non-electrical engineering
student to those aspects of electrical engineering that are likely to be most relevant to his or her professional career. Virtually all of the topics of Table 1.1 will be
touched on in the book, with varying degrees of emphasis. The following example
illustrates the pervasive presence of electrical, electronic, and electromechanical
devices and systems in a very common application: the automobile. As you read in figure 1.1
. Circuit analysis
Electromagnetics
Solid-state electronics
Electric machines
Electric power systems
Digital logic circuits
Computer systems
Communication systems
Electro-optics
Instrumentation systems
Control systems
EXAMPLE 1.1 Electrical Systems in a Passenger Automobile.
A familiar example illustrates how the seemingly disparate specialties of electrical
engineering actually interact to permit the operation of a very familiar engineering
system: the automobile. Figure 1.2 presents a view of electrical engineering systems in a
modern automobile. Even in older vehicles, the electrical system—in effect, an electric
circuit—plays a very important part in the
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