Hello aspirant 

.

Yes you Can get good colleges but try to get more marks than 80percent. If you get more than 80% marks you will get top colleges in Tamil nadu. 

If you want to know the opening and closing marks for branch wise. And also opening rank and closing rank of different colleges accepting tnea exam. Once visit this below link :-

https://www.google.com/amp/s/engineering.careers360.com/articles/tnea-cutoff/amp

If you have any questions further let me know !

Thank you!