Basic Electrical Theory - Overview of AC Power, AC Generators, AC Reactive Components, and Voltage Regulators
A. Bhatia, B.E.
(AC) unlike Direct current (DC) flow first in one direction then in the opposite
direction. The most common AC waveform is a sine (or sinusoidal) waveform. This
electrical training course provides a basic introduction to AC theory, electrical
circuits, AC generator and voltage regulation. This course will be extremely
helpful to individuals who are just beginning a career in electrical work, or
who require a basic knowledge of electrical principals and equipment to better
their primary responsibilities. This course is also a prerequisite for the all
other electrical training.
This 4-hr course material is based entirely on US Department of Energy training materials DOE-HDBK-1011/3-92, Fundamentals Handbook, Electrical Science, and Volume 3 of 4. The volumes 1, 2 and 4 of the handbook have been separately listed.
This course includes a multiple-choice quiz at the end, which is designed to enhance the understanding of the course materials.
At the conclusion of this course, the student will:
This course is aimed at beginners, novice engineers, electricians, hobbyists, plant mechanics, service technicians, maintenance supervisors, plant engineers, contractors, energy auditors, layout professionals and general audience.
In DC circuits,
the polarity of the voltage source does not change over time. As useful and
as easy to understand as DC is; it is not the only "kind" of electricity
in use. Certain sources of electricity (most notably, rotary electro-mechanical
generators) naturally produce voltages alternating in polarity, reversing positive
and negative over time. Either as a voltage switching polarity or as a current
switching direction back and forth, this "kind" of electricity is
known as Alternating Current (AC).
It is true that in some cases AC holds no practical advantage over DC. In applications where electricity is used to dissipate energy in the form of heat, the polarity or direction of current is irrelevant, so long as there is enough voltage and current to the load to produce the desired heat (power dissipation). However, with AC it is possible to build electric generators, motors and power distribution systems that are far more efficient than DC, and so we find AC used predominately across the world in high power applications. To explain the details of why this is so, a bit of background knowledge about AC is necessary.
In this course, you are required to study the following DOE-HDBK-1011/3-92, Fundamentals Handbook, Electrical Science, and Volume 3 of 4.
This course is based entirely on US Department of Energy training materials DOE-HDBK-1011/1-92, Fundamentals Handbook, Electrical Science, Volume 3 of 4.
The link to the document is Basic Electrical Theory - Overview of AC Power, AC Generators, AC Reactive Components, and Voltage Regulators.
Course Summary is in the following PDF file:
Summary - Remember These Facts
Once you finish studying the above course content, you need to take a quiz to obtain the PDH credits.