Thank you for your query 

I have provided below a list of the few of the many good engineering colleges in tamil nadu -

Indian Institute of Technology Madras

Amrita School of Engineering, Coimbatore

College of Engineering, Guindy

National Institute of Technology Tiruchirappalli

SASTRA University, Thanjavur

SRM Institute of Science and Technology, Chennai

Vellore Institute of Technology, Vellore

All have been rated with AAA+ and have a high repute

All the best 

Hi Ramya! Top engineering colleges in Tamil Nadu are :-
1) IIT Madras
2) Amrita School of Engineering, Coimbatore
3) College of Engineering, Guindy
4) National Institute of Technology Tiruchirappalli
5) PGS College of Technology, Coimbatore
6) SASTRA University, Thanjavur
7) Sri Sivasubramaniya Nadar College of Engineering, Kalavakkam
8) SRM Institute of Science and Technology, Chennai
9) Thiagarajar College of Engineering, Madurai
10) Vellore Institute of Technology, Vellore
For more information about them please visit this link :-
https://engineering.careers360.com/colleges/ranking/top-engineering-colleges-in-tamil-nadu
Thank you!