Book Details :
LanguageEnglish
Pages595
FormatPDF
Size6.54 MB

# Basic Electrical Engineering by Uma Rao and Jayalakshmi

Basic Electrical Engineering Revised Edition by Dr. K Uma Rao and Dr. A. Jayalakshmi | PDF Free Download.

## Basic Electrical Engineering Contents

Part I Circuits and Measurements

• Basic laws
• Electromagnetism
• Methods of Circuit Analysis
• Single Phase ac Circuits
• Three phase circuits
• Electrical Wiring and Estimation
• Electrical Instruments

Part II Electric Machines

• Introduction to Electric Machines
• DC Machines — Generators
• DC Motors
• Transformers
• Three-phase induction motors
• Alternators
• Single Phase Induction Motors
• Lab Manual—Electrical Machines Lab

## Preface to Basic Electrical Engineering

This book is primarily intended for a course in Basic Electrical Engineering. A strong need was felt for such a book, which would address the needs of Indian Students hailing from different backgrounds across the country.

The book is written in two parts. Part A covers the important topics of circuit analysis and basic instrumentation. Part B deals with the concepts of Electrical Machines. Part A has six chapters.

Chapter 1 of Part A, introduces the student to the two fundamental laws of Electrical Engineering which form the premise for all other topics, namely Ohm’s law and Kirchhoff’s laws.

Chapter 2 deals with the fundamental concepts in Electromagnetism—definitions of fundamental quantities, Biot-Savart’s law, Faraday’s laws, Self Inductance, and Mutual Inductance.

Chapter 3 covers the various methods of circuit analysis—nodal analysis, mesh analysis, superposition theorem, Thevenin’s theorem, Norton’s theorem, maximum power transfer theorem, reciprocity theorem, star-delta transformation—applied to simple dc circuits.

Chapter 4 introduces the students to the fundamentals of ac circuits. The solution of simple series and parallel ac circuits is presented.

Chapter 5 presents the concepts of three-phase circuits. The solution of balanced three-phase star and delta connected networks is dealt with in this chapter. The chapter also discusses the various methods for the measurement of three-phase power.

Chapter 6 exposes the student to common electrical appliances and electrical engineering practices we come across in day to day life.

The chapter covers the topics of methods of electrical wiring, choice of cables, simple wiring schemes, working principle of fuses, the principle of MCBs, earthing methods, common lighting sources, estimation of energy requirement for simple loads, causes and prevention of electric shocks.

Finally, chapter 7 covers the basic concepts of electrical measurement. Moving coil and moving iron instruments, dynamometer wattmeter, and energy meter are discussed in detail. Part B is devoted to the treatment of Electrical Machines.

Chapter1 presents the fundamental concepts of electric machines.

Chapter 2 deals with generators. The construction, principle of operation and derivation of induced emf are presented in detail.

Chapter 3 deals with the operation, types, and characteristics of dc motors. It also covers the important topics of testing and speed control of dc motors.

Chapter 4 is devoted to transformers. The constructional features, operation, phasor diagram, testing, computation of efficiency and regulation are discussed in detail.

Chapter 5 deals with three-phase induction motors, which are the most rugged and widely used in the industry.

Chapter 6 presents the three-phase alternators. The construction, emf equation and different methods of regulation are covered in detail.

Chapter 7 covers single-phase induction motors.

Chapter 8 gives the experimental procedure for some of the common experiments conducted in the electrical machines laboratory.

All chapters are presented in a simple and lucid manner to facilitate an easy understanding of the subject. Important concepts are highlighted to emphasize the need to remember them.

Every chapter contains a number of solved examples to strengthen the learning of the student and help the student, apply the concepts in various contexts.

The examples presented help the students to relate abstract concepts in Electrical Engineering to practical applications that they see in their daily lives. Every chapter also gives a number of questions and unsolved problems for the student to work out.

The book can be used as a textbook for a course in Basic Electrical Engineering, a fundamental course in Electric circuits and also for a basic course in Electrical Machines.