In the recent future, TNEA 2020 cutoff will be released in the form of opening and closing ranks for all category candidates. Still you can see the previous years cutoff. They can not give you an exact idea but its more of a rough estimate to know whether you are in or out. The cutoffs vary from year to year because they depend on a lot of factors. This is the link: https://engineering.careers360.com/articles/tnea-cutoff