There are various study materials and notes available for electrical engineering as an optional subject. These resources are designed to provide comprehensive coverage of the subject and help candidates prepare for the UPSC exam. Here are some of the study materials and notes that can be used:


- Standard textbooks such as "Electrical Engineering: Principles and Applications" by Allan R. Hambley, "Electrical Machines, Drives and Power Systems" by Theodore Wildi, and "Power System Analysis and Design" by J. Duncan Glover, are highly recommended for in-depth understanding of the subject.
- These textbooks cover various topics such as electrical circuits, electromagnetism, power systems, and electrical machines.


- Solving previous years' question papers is an excellent way to understand the exam pattern and the type of questions asked.
- Candidates can analyze the questions and identify the important topics that need more focus.


- There are several websites and online platforms that offer study materials and notes for electrical engineering.
- EduRev is one such platform that provides a wide range of study materials, including notes, practice questions, and video lectures, specifically tailored for the UPSC exam.
- These study materials cover all the essential topics and concepts required for electrical engineering.


- Reference books and journals can provide additional insights and advanced knowledge in specific areas of electrical engineering.
- Some popular reference books include "Control Systems Engineering" by Norman S. Nise and "Digital Signal Processing" by John G. Proakis and Dimitris G. Manolakis.


- Participating in online forums and discussion groups can be beneficial for sharing knowledge, clarifying doubts, and staying updated with the latest trends in electrical engineering.
- Websites like Quora and Reddit have dedicated sections where candidates can interact with experts and fellow aspirants.

Overall, these study materials and notes provide a comprehensive understanding of electrical engineering concepts and help candidates prepare effectively for the UPSC exam. It is important to choose reliable and trusted sources for study materials to ensure accurate and relevant information.