Control Systems is a comprehensive text, designed to cover the complete syllabi of this subject offered at various engineering courses at the undergraduate level. The book is also useful for students appearing for competitive examinations like GATE, IAS, IES, NTPC, NHPC and so on. The book begins with a discussion on open-loop and closed-loop control systems. It goes on to discuss the block diagram representation and reduction techniques, which have been used to arrive at the transfer function of systems. This book lays emphasis on practical applications along with the explanation of key concepts. In this third edition, the treatment of topics has been made simple and lucid, with the help of extended derivations and an exhaustive number of new figures, illustrations and solved examples.