Electrical Machine is a very important subject for Electrical Engineers. Being an Electrical Engineer, we can never ignore this subject. Many engineering student find this subject tough due to lack of proper and understandable explanations given in the book.The book begins with introductory chapters on electro mechanical conversion theory, which forms the underlying principle of machines. It then discusses the principles, working, operating characteristics and control of various DC machines, followed by detailed chapters on Transformers and DC Machines.Electrical Machines is designed for the students of electrical and allied engineering programs to explain the principle, construction and working mechanism of various AC and DC Machines. The following topics also covered Single Phase Transformer Basics of Electro mechanical Energy ConversionBasic Concept of Rotating Electrical Machine ,DC Motor and Generator, Synchronous Machine, Three Phase Induction Machine.This book aims to offer a thorough study and reference textbook on electrical machines and drives. The basic idea is to start from the pure electromagnetic principles to derive the equivalent circuits and steady-state equations.