This thoroughly revised and updated edition presents a rigorous and comprehensive treatment of transformers and more common types of rotating electrical machine types. Each chapter begins with rudimentary concepts and is so developed that an average student can easily comprehend it. The salient features of this book are : In-depth coverage of transformers, dc machines, 3-phase synchronous, and induction machines. Highlights that electrical machines operate on the same basic principles. Devotes a chapter on electromechanical-energy conversion principles and another on dc/ac machine windings. Drive aspects and applications are discussed for each machine type. Clarity of presentation is enhanced by illustrative figures and examples selected from question-papers of important Universities, IAS, IES and GATE. Includes numerous problems, conceptual questions and objective-type questions (with answers) to help the reader master the basic concepts. This edition includes a chapter on ?basic principles of electrical machines.? All these features contribute towards making this book an ideal text for undergraduate students of degree classes. Practicing engineers, through self-study, will also find this volume useful to them. Chapter 0. Basic Principles of Electrical Machines Chapter 1. Transformers Chapter 2. Electromechanical Energy Conversion Principles Chapter 3. Basic Concepts of Rotating Electrical Machines Chapter 4. D.C. Machines Chapter 5. Polyphase Synchronous Machines Chapter 6. Polyphase Induction Motors Chapter 7. Armature windings Appendix - A: Magnetic Circuits Appendix - B: Three-Phase Circuits Appendix - C: Objective Type Questions Appendix - D: Short-Answer Type Questions Appendix - E: Appendix Index