Intended as a textbook for the undergraduate students of civil and mechanical engineering, this book is the outcome of authors, vast experience in this subject area. It presents the basic theories of hydraulics and all types of hydraulic machines that are used in these days in our day-to-day life. Organized in two parts-Hydraulics (Part I) and Hydraulic Machines (Part II), the book is written in an easy-to-follow method in conformity to the syllabi followed in universities. The chapter end exercises of all the chapters are carefully prepared for the students, which enhance their problem-solving skills. This book is also useful for the students of chemical, electrical and aeronautical engineering.