Basic Electrical Engineering

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Basic Electrical Engineering

Description: –

Electrical Engineering has been written as a core course for all engineering students viz.

Electronics and Communication, Computer Engineering, Civil, Mechanical Engineering, etc. With advancements in technologies in almost all spheres of engineering, it is becoming difficult to provide more than one slot for interdisciplinary courses. However, the author feels that no engineering can work without electric energy.

The basic input to all engineering is electric energy. A basic course in Electrical Engineering is almost essential for all engineering students.

Keeping this compulsion in mind and also that this course will normally be offered at the first-year level of engineering, the author has made a modest effort to give in a concise form various features of Electrical Engineering starting from simple ac circuits to Network theorems, measuring instruments, transformers, various de and ac machines including stepper motor. Various physical phenomena have been explained using simple language avoiding the rigorous of mathematics.

Chapter I : – deals with the steady-state analysis of a.c. series and parallel circuits and series and parallel resonance.

Chapter II ; – describes various network theorems, star-delta transformation, and methods of mesh and nodal analysis for de networks. Balanced and unbalanced, three-phase circuits have been analyzed and methods of 3-phase power measurements have been discussed in

Chapter III: – Measuring instruments like, ammeter, voltmeter, wattmeter, and energy meter have
been described in chapter IV. The transformer is a very important piece of electrical equipment. The construction, principle of operation, parameter calculations, efficiency, and regulation of the transformer have been discussed in chapter V.

Chapter VI: – deals with types of de machines, their operation, and characteristics, efficiency
and speed control and application of these machines.

Chapter VII: – deals with the construction, principle of operation, and applications of three
phase synchronous motors and stepper motor.

Three-phase induction motors form at most 60 to 70% of the total load on the power system. These motors have been discussed in chapter VIII including types, construction, the principle of operation, methods of starting, torque-slip characteristic, application, and single phasing operation.

Single-phase induction motors find wide application in Office and domestic appliances. The construction, principle of operation, and application of these motors have been described in

chapter IX: – Power systems are the most capital intensive and the most complex system ever developed by man. Chapter X gives in brief, various supply and distribution systems and suggests methods for the improvement of power factors.

A large number of problems have been solved to help understand the theory. At the end of each chapter, unsolved problems with their answers have been suggested for further practice.

In the end, a large number of objective-type questions have been added to help the reader to test himself.
Any constructive suggestion for the improvement of the book will be gratefully acknowledged.

Last but not the least, I wish to express my gratitude to my wife Usha, daughter Menu, and son Sandeep for their patience and encouragement during the preparation of the book.

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