Preparing for the viva voce round of the Electrical Engineering optional subject exam requires a thorough understanding of the subject matter and effective communication skills. Here are some specific tips to help you prepare for this round:

1. Comprehensive knowledge:
- Review all the important topics and concepts in Electrical Engineering.
- Familiarize yourself with the fundamental principles, laws, and equations in the field.
- Study the latest advancements and trends in Electrical Engineering to showcase your updated knowledge.
- Practice solving numerical problems and derivations to strengthen your understanding.

2. Be prepared for common questions:
- Anticipate questions related to your area of specialization within Electrical Engineering.
- Prepare concise and clear answers to questions on basic concepts, applications, and practical aspects of the subject.
- Revise important theorems, laws, and their applications to confidently answer related questions.

3. Effective communication skills:
- Work on improving your verbal and non-verbal communication skills.
- Practice speaking clearly and confidently, using appropriate technical terms.
- Maintain good eye contact and body language to convey your confidence and knowledge.
- Pay attention to your tone and pace of speaking, ensuring clarity and coherence in your answers.

4. Stay updated with recent advancements:
- Read research papers, journals, and publications to stay informed about the latest developments in Electrical Engineering.
- Be prepared to answer questions on emerging technologies, such as renewable energy systems, power electronics, or smart grids.
- Stay updated with current industry practices and their impact on Electrical Engineering.

5. Mock viva voce sessions:
- Engage in mock viva voce sessions with your peers or mentors to simulate the exam environment.
- Practice answering questions under time constraints to improve your ability to think on your feet.
- Seek feedback from others to identify any areas of improvement.

6. Revise practical aspects:
- Review practical aspects of Electrical Engineering, such as circuit design, instrumentation techniques, and laboratory experiments.
- Be prepared to explain experimental setups, procedures, and the underlying theory behind them.

7. Stay calm and composed:
- Maintain a composed and confident demeanor during the viva voce round.
- If you don't know the answer to a question, be honest and politely admit your lack of knowledge.
- Demonstrate a willingness to learn and engage in a constructive discussion with the examiners.

In conclusion, preparing for the viva voce round of the Electrical Engineering optional subject exam requires comprehensive knowledge, effective communication skills, staying updated with recent advancements, and practicing mock sessions. By following these tips, you can improve your chances of performing well and impressing the examiners.