Hello Vishnu,

Look there are three ways to take admission into any private college. Firstly through JEE main score, second through College entrance exams and third is through management quota.

Every college has two to three round of counseling. Each college has a different parameter to call students like they set some cut-off. Based on that they call students. students can attend the counseling by paying the counseling fee and choose the branch of their choice.

Further, there are top govt. colleges in India where you can take admission which is given in the following link. Please go through it. Read the review of other students as it will help you to know more about the college culture, their education system and placements.

https://engineering.careers360.com/colleges/ranking

Other than this there some good private colleges as well where you can take admissions such as KIIT UNIVERSITY, VIT UNIVERSITY, SRM UNIVERSITY, MANIPAL UNIVERSITY, LPU PUNJAB. So I would also suggest you to keep a watch on counseling of college of your choice. As soon as counseling results are out and students get to know about their allotted seats and are asked to pay the admission fee by visiting the institute they've been allotted. If you didn't get the choice of your branch you still can opt-out of that college and they will refund the counseling fee. Try to act fast as counseling of most of the colleges is going to start. Also try to apply multiple colleges at a time. It will help to keep your option open in end.  

Hope you Find this information useful. have a great future ahead.