Hello Sakthi,

Top Deemed Engineering Colleges in Tamil Nadu are as follows -

• Amrita School of Engineering, Coimbatore. 
• PSG College of Technology, Coimbatore. 
• SASTRA University, Thanjavur. 
• Sri Sivasubramaniya Nadar College of Engineering, Kalavakkam. 
• SRM Institute of Science and Technology, Chennai. 
• Thiagarajar College of Engineering, Madurai. 
• Vellore Institute of Technology, Vellore.

Hope this helps.