Chennai Institute of Technology

If you are willing to take admission for B.Tech at CIT Chennai, yes, you can take admission without any entrance exam. Admissions at this institute are purely merit-based, and the merit is prepared based on the seats intake and 12th score of applicants. As you have a very decent score in your 12th, you have a 50/50 chance of getting admission. However, previous year merit score information is not available, so a prediction can also not be made. 

For admission in Chennai Institute of Technology (CIT), Kundrathur you need to give Tamil Nadu Common Entrance Test (TNCET) or Graduate Aptitude Test of Engineering (GATE). After the exams result get out, apply for the Tamil Nadu Common Admission (TANCA) process for the college.

On the basis of the result of exams you'll be eligible to take admission in Chennai Institute of Technology.

Both Annamalai University and Chennai Institute of Technology are good options to pursue ME/MTech. However, in terms of affordability,  Annamalai University is more affordable since the tuition fees to pursue ME/MTech at Annamalai University range from INR 50,000 to INR 1.1 lakh, and the tuition fee to pursue ME/MTech at Chennai Institute of Technology is INR 1.6 lakh.

Note: The fee mentioned above is as per the official sources. However, it is indicative and subject to change.