TNEA don't conduct any entrance exam.

Admissions are based in class 12th you have to appear for the counselling.

You can check the eligibility criteria below

- You have to score 50% aggregate in 10+2th standard (or equivalent) exam for general category and 40% for reserved category

- You should be native of Tamil Nadu.

To check the complete eligibility criteria you can refer below link

https://engineering.careers360.com/articles/tnea-eligibility-criteria

Good Luck!!