The main aim in writing this book is to present the theory and practice at level appropriate for young under graduate student who are being exposed to the study of Basics of Electrical and Electronics Engineering for the first time. The challenge was to present the text in a manner that would not only enable the student to clearly understand the important concepts, but also to apply those concepts in solving problems. We cannot express enough thanks to Major Dr.V.A.Narayana Principal, CMR College of Engineering & Technology, Hyderabad, Telangana, India for his continued support and encouragement. We also thankful to our Deans Dr. MSR Murthy, Dr. M. Sudhakar and Dr. B. Lokeswara Rao of CMRCET. Completion of this Book could not have been accomplished without the support of our Head of the Departments Prof. G.Devadas of Electrical & Electronics Engineering and Prof, E.N.V.Purna Chandra Rao of Electronics & Communication Engineering. Finally we are thank ful to all members of our family who supported all the time actively or passively, to conclude this book.