Hello,

In Tamilnadu so many engineering colleges are present. If you want to admission there you have to give JEE Mains examination or TS EAMCET examination or TNEA examination or if any university conduct their own entrance examination. This all are entrance examination name for Tamilnadu engineering colleges. I'll suggest you some name below

1. IIT Madras
2. NIT Trichy
3. Anna University
4. VIT Vellore
5. Amrita Vishwa Vidyapeetham
6. SRM University
7. PSG tech Coimbatore etc.

You can check out above colleges. Also I'll provide you a link below you can check it for more details about the college

https://engineering.careers360.com/colleges/ranking/top-engineering-colleges-in-tamil-nadu

All the best.