Hello,
You can visit the below link https://engineering.careers360.com/colleges/list-of-engineering-colleges-in-tirunelveli and download there brochures to know how you can get admission in these. Usually private colleges may offer admission without entrance exams.
College Comparison based on Courses, Placement, Rank, Fee
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile