I understand you're looking for a PDF of "Electrical Machines 1" from the 2021 academic year (sometimes referred to as a "quantum" series—a popular exam-prep book series in some Indian universities, e.g., the "Quantum Series" for B.Tech students).
For those preparing for the current academic cycle, the 2021 edition remains a solid foundation, as the core principles of DC machines and transformers rarely change, even as newer technologies emerge in the field of power electronics. electrical machines 1 quantum pdf 2021
If you're interested in exploring the topic further, I recommend searching for the following papers and resources: I understand you're looking for a PDF of