Automation is a process to perform controlled activities with minimal human assistance. A lot of research is being carried out in this field. Students are also opting for research and studies in automation. The objective of this book is to explain the role of industrial automation. This book will help engineering students to understand the basic concepts of industrial automation. The unique feature of this book is the inclusion of multiple-choice questions to help prepare students for competitive exams and interviews. Automation has grown into a vast field and this book will be helpful to understand it comprehensively.