Hey Dharmesh,
The Following Is The List Of The Colleges Operated By Government Of Tamil Nadu :
1. Alagappa Chettiar College Of Engineering And Technology, Karaikudi.
2. Government College Of Engineering , Bargur.
3. Government College Of Engineering, Salem.
4. Government College Of Engineering, Tirunelveli.
5. Government College Of Technology, Coimbatore.
6. Thanthai Periyar Government Institute Of Technology , Bagayam.
7. Government College Of Engineering, Thanjavur.
8. Government College Of Engineering, Dharmapuri.
9. Government College Of Engineering, Bodinayakkanur.
10. Government College Of Engineering, Srirangam.
11. Institute Of Road And Transport Technology, Chithode.

Hi dharmesh

Top 5 engineering colleges in tamil nadu are:

• Indian institute of technology, madras
• National Institute of Technology Tiruchirappalli
• Alagappa College of Technology, Chennai
• Anna University, Chennai
• Coimbatore Institute of Technology, Coimbatore

Hope this helps

Good luck