The book "Theory of electric traction" by the authors Isaev, Rosenfeld, Sidorov and Ozerov is a fascinating and deep immersion in the world of electrical engineering and mechanics, which will be of interest to both professional engineers and students of technical specialties. This work is not just a textbook, but a real encyclopedia of knowledge that covers a wide range of topics related to electric traction and its application in various fields. In the "Theory of electric traction" the authors carefully examine the basic principles of operation of electric machines, their design and features of operation. The book begins with the basics, which makes it accessible to readers with different levels of training. Gradually, the authors delve into more complex aspects, such as the calculation and design of electrical systems, making it an indispensable tool for students and professionals seeking to expand their knowledge in this area. One of the book's key themes is the interaction of electric propulsion with other systems, such as mechanical and hydraulic. The authors emphasize the importance of an integrated approach to the design and operation of electric machines, which makes their work relevant in the conditions of modern production and technology. The book also addresses the issues of sustainability and reliability of electrical systems, which is an important aspect for engineers working in the field of energy and transport. "Theory of electric propulsion" will be especially interesting to those who are fond of engineering, physics and new technologies. It is suitable for both students of technical universities and practicing engineers who want to update their knowledge or master new methods and technologies in the field of electric traction. Readers interested in topics related to electric vehicles, renewable energy and modern automation systems will find in the book a lot of useful information and practical examples. The style of the authors is distinguished by clarity and accessibility of presentation, which makes complex technical concepts understandable even for those who are just starting their way in electrical engineering. Using many illustrations, diagrams and examples from real practice, the authors make the material more visual and interesting. This allows the reader not only to assimilate theoretical knowledge, but also to apply them in practice. The book also raises important issues of sustainable development and ecology, making it particularly relevant in light of current global challenges. The authors discuss how electric traction can contribute to reducing the carbon footprint and improving energy efficiency, which is an important topic for future engineers and scientists. If you are looking for literature that will help you to better understand the principles of electric machines and their application in the modern world, "Theory of electric traction" will be an excellent choice. This is not just a book, but a whole world of knowledge that will open up new horizons in the field of electrical engineering and mechanics. Do not miss the opportunity to immerse yourself in this fascinating and useful topic, which will become the basis for your professional growth and development.