Yes, there are online platforms and websites that provide previous years' papers for the electrical engineering optional subject. One such platform is EduRev, which offers a wide range of study materials and resources for various competitive exams, including UPSC.

Why EduRev is a reliable platform:

1. Large database of previous years' papers: EduRev has a vast collection of previous years' papers for the electrical engineering optional subject. These papers are sourced from reputable sources and are updated regularly to provide the most recent question papers.

2. Organized and easy-to-access: The platform provides a user-friendly interface that allows users to easily navigate and access the desired papers. The papers are organized according to the year and exam, making it convenient for users to find the specific papers they are looking for.

3. Quality study materials: Along with previous years' papers, EduRev also offers comprehensive study materials, notes, and video lectures for electrical engineering optional subject. These resources are created by experienced educators and experts in the field, ensuring the highest quality of content.

4. Interactive features: EduRev provides interactive features such as quizzes and practice tests, which allow users to assess their knowledge and track their progress. This helps in identifying weak areas and focusing on improving them.

5. Community support: The platform has a community of students and educators who actively engage in discussions, doubt solving, and sharing resources. This creates a collaborative learning environment where users can seek guidance and support from others.

Conclusion:

EduRev is a reliable online platform that provides previous years' papers for the electrical engineering optional subject. With its large database, organized interface, and quality study materials, it is a valuable resource for UPSC aspirants. The interactive features and community support further enhance the learning experience.