Electrical Engineering

This book includes education covering the basic principles of Electrical Engineering with particular emphasis on quality assurance and improvement of text, Electrical Engineering offline course modules. It is important to have a basic understanding of the principles of Electrical Engineering.

electrical and electronics engineering, the branch of engineering concerned with the practical applications of electricity in all its forms, including those of the field of electronics. Electronics engineering is that branch of electrical engineering concerned with the uses of the electromagnetic spectrum and with the application of such electronic devices as integrated circuits and transistors.

In engineering practice, the distinction between electrical engineering and electronics is usually based on the comparative strength of the electric currents used. In this sense, electrical engineering is the branch dealing with “heavy current”—that is, electric light and power systems and apparatuses—whereas electronics engineering deals with such “light current” applications as telephone and radio communication, computers, radar, and automatic control systems.

The distinction between the fields has become less sharp with technical progress. For example, in the high-voltage transmission of electric power, large arrays of electronic devices are used to convert transmission-line current at power levels in the tens of megawatts. Moreover, in the regulation and control of interconnected power systems, electronic computers are used to compute requirements much more rapidly and accurately than is possible by manual methods.

History

Electrical phenomena attracted the attention of European thinkers as early as the 17th century. The most noteworthy pioneers include Ludwig Wilhelm Gilbert and Georg Simon Ohm of Germany, Hans Christian rsted of Denmark, André-Marie Ampère of France, Alessandro Volta of Italy, Joseph Henry of the United States, and Michael Faraday of England. Electrical engineering may be said to have emerged as a discipline in 1864 when the Scottish physicist James Clerk Maxwell summarized the basic laws of electricity in mathematical form and showed that radiation of electromagnetic energy travels through space at the speed of light. Thus, light itself was shown to be an electromagnetic wave, and Maxwell predicted that such waves could be artificially produced. In 1887 the German physicist Heinrich Hertz fulfilled Maxwell's prediction by experimentally producing radio waves.

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