This book has been developed to meet the requirements of the new curriculum in the subject. The subject is explained in simple language, with the help of illustrations. Included in the book are a large number of solved examples to help the student learn how to apply the principles in practice. A set of review questions and objective type questions are provided at the end of each unit along with tutorial and experimental exercises for laboratory work. This book has been developed to meet the requirements of the new curriculum in the subject. The subject is explained in simple language, with the help of illustrations. Included in the book are a large number of solved examples to help the student learn how to apply the principles in practice. A set of review questions and objective type questions are provided at the end of each unit along with tutorial and experimental exercises for laboratory work.