Electrical Machines

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This book on "Electrical Machines" has been written for students preparing for B.E./B.Tech, A.M.I.E. section B, U.P.S.C., and other Competitive Examinations. It consists of two parts: Part I ? deals with D.C. machines, and Part II ? deals with A.C. machines and Polyphase circuits. Besides this, "Additional Topics" and a "Questions Bank" on "Objective Type Questions" have been incorporated at the end of the book to make it a comprehensive unit in all respects.

Salient Features:

The presentation of the subject matter is very systematic and the language of text is lucid, direct and easy to understand. Each chapter of book is saturated with much needed text supported by neat and self-explanatory diagrams to make the subject self-speaking to a great extent. A large number of solved examples, properly graded, have been added in various chapters to enable the students to attempt different types of questions in the examination without any difficulty. At the end of each chapter Highlights, Objective Type Questions, Theoretical Questions and Unsolved Examples have been added to make the book a complete and comprehensive unit.

BASIC CONCEPTS-ELECTROMAGNETISM, MAGNETIC CIRCUITS AND ELECTROMAGNETIC INDUCTION 0. Electromechanical Energy Conversion

PART I-D.C. MACHINES: 1.Direct Current Generators 2.Armature Reaction and Commutation 3.Direct Current Generator Characteristics 4.Parallel Operation of D.C. Generators 5.Direct Current Motor 6.Speed Control of D.C. Motors 7.Losses, Efficiency and Testing of D.C. Machines 8.Special Types of D.C. Machines 9. Miscellany.

PART II-A.C. MACHINES: 1.Polyphase Circuits 2.Transformers 3.Polyphase Induction Motors 4.Single-Phase Motors 5. Synchronous Generators or Alternators 6.Synchronous Motors 7.Converters and Rectifiers.

ABOUT THE AUTHOR R K Rajput

Er. R. K. Rajput, born on 15th September, 1944 (coincident with Engineer's Day) is a multidisciplinary engineer. He obtained his Master's degree in Mechanical Engineering (with Hons.-Gold Medal) from Thapar Institute of Engineering and Technology, Patiala. He is also a Graduate Engineer in Electrical Engineering. Apart from this he holds memberships of various professional bodies like Member Institution of Engineers (MIE); Member Indian Society of Technical Education (MISTE) and Member Solar Energy Society of India (MSESI). He is also a Chartered Engineer (India). He has served for several years as Principal of "Punjab College of Information Technology, Patiala" and "Thapar Polytechnic, Patiala". He has more than 40 years of experience in teaching different subjects of Mechanical and Electrical Engineering disciplines. He has published/presented a large number of technical papers. He is the author of several books on the important subjects of Mechanical as well as Electrical Engineering disciplines. He has earned, by dint of hard work and devotion to duty, the following awards / honours Best Teacher (Academic) Award Jawahar Lal Nehru Memorial Gold Medal for an outstanding research paper (Institution of Engineers) Distinguished Author Award Man of Achievement Award.