PREFACE

Electrical Machines, Second Edition, has been written for undergraduate students of electrical engineering, electrical and electronics engineering and for other engineering programmes in India and abroad. The book covers a whole range of machines that include static machines (transformers), rotating machines (DC machines, AC machines). The introduction at the beginning discusses the elementary topics to be read before moving on to other topics. Solved numerical examples interspersed in the chapters make understanding of the theory simpler. Exhaustive solved examples are given for further practice. Significant Points, Short Questions and Answers, Supplementary Problems and Multiple Choice Questions (MCQs) with Answers have also been incorporated in each chapter.

This book contains nine chapters: Chapter 1 explains single-phase transformers. Chapter 2 deals with three-phase transformers. Basic concepts of rotating machines are presented in Chapter 3. Chapter 4 introduces DC generators. DC motors are dealt with Chapter 5. Chapter 6 presents synchronous generators/alternators. Synchronous motors are discussed in Chapter 7. Chapter 8 deals with induction motors. Chapter 9 details single-phase motors and special machines. Besides the chapters, the book has a number of appendices to cover the other sub-parts, followed by 300 MCQs.

The contents of the book have been systematically organized so that they are useful both for the novice as well as advance-level students. They will be of much help to students of AMIE (the certification Associate Member of the Institution of Engineers) and anyone preparing for any competitive examination, such as those for the IES (Indian Engineering Services) or other UPSC (Union Public Service Commission) examinations. I will be happy to receive feedback and suggestions for the improvement of this book.

Acknowledgements

My heartiest thanks go to the editorial team of Pearson Education for editing this manuscript and giving it good shape. I am sincerely thankful to my friends in this area for their comments and encouragement. Finally, I wish to express my sincere gratitude to my mother Beena Ghosh and my wife, Dr Kuntal Ghosh, for their patience and constant encouragement during the preparation of the manuscript.

SMARAJIT GHOSH