Hey Vennila.

See the marks u have scored might be somewhat less to bag u a seat in the NIT TRICHY in mechanical branch even under ur OBC category. U can opt for many other NITs for that branch or the other good NITs for other branches. See the marks u have scored comes under the average JEE MAINS score so getting a top branch in the top college might be difficult. Wait until the NTA provides the final result.

Hope u got ur point. Ask if any query.

Good luck