Yes, you can use previous years' GATE ME questions for practice along with your regular engineering studies. Here's why:

1. Enhances Problem-solving Skills:
- GATE ME questions are designed to test your problem-solving abilities and analytical thinking.
- By practicing these questions, you can improve your ability to analyze and solve complex problems, which is essential for success in engineering.

2. Familiarizes with GATE Exam Pattern:
- GATE ME questions are based on the official GATE exam pattern.
- By practicing these questions, you become familiar with the structure and format of the actual exam, including the types of questions, marking scheme, and time management.

3. Tests Knowledge and Conceptual Understanding:
- GATE ME questions cover a wide range of topics and concepts from different subjects in mechanical engineering.
- By attempting these questions, you can assess your knowledge and understanding of various topics and identify areas that require further study.

4. Identifies Strengths and Weaknesses:
- Practicing previous years' GATE ME questions helps you identify your strengths and weaknesses in different subjects.
- This enables you to focus on areas where you need improvement and allocate your study time accordingly.

5. Builds Exam Confidence:
- Regular practice of GATE ME questions boosts your confidence for the actual exam.
- As you become more familiar with the question patterns and gain proficiency in solving them, you gain confidence in your abilities to tackle the GATE exam.

6. Provides Exposure to Different Question Types:
- GATE ME questions come in various formats, including multiple-choice questions, numerical answer questions, and multiple-select questions.
- Practicing these different question types helps you understand their nuances and develop effective strategies for solving them.

7. Supplements Regular Engineering Studies:
- While regular engineering studies provide you with a strong foundation, practicing GATE ME questions complements your learning by providing additional practice and exposure to different problem-solving scenarios.

Conclusion:
Using previous years' GATE ME questions for practice alongside your regular engineering studies provides numerous benefits, including enhanced problem-solving skills, familiarity with the exam pattern, testing of knowledge and conceptual understanding, identification of strengths and weaknesses, increased exam confidence, exposure to different question types, and supplementation of regular engineering studies. Incorporating these practice questions into your study routine can significantly improve your chances of success in the GATE ME exam.