Andhra Pradesh

Not possible. However, you can take fresh admission in Andhra Pradesh college. You will lose one year.

Apply for the course in their university website.

You can take admissions in Delhi University. You can apply online on their website. Important dates regarding 2018 admission will be published on website and cut-off will be available in the month of May after class 12th results. According to the cut-off and choices filled, you can visit the campus on the respective dates for admission.

Best universities for Ph.D. are Andhra University, Visakhapatnam & GITAM University.

Hello Vineesh,
Yes you can. You need to enroll for a single window counseling program through which you will be allotted seats based on your marks in HSC.
There will be a separate counseling process for students from other states and it would commence after the admission of Tamil Nadu students.
You may refer : www.annauniv.edu and www.tnea.ac.in

Hello Sai,
Here are some good autonomous colleges in Andhra Pradesh:
1. Achraya Nagarjuna University
2. Andhra University
3. Krishna University, Machilipatnam
4. Rayalaseema University, Kurnool
5. Vikrama Simhapuri Univesity, Nellore
6. Adikavi Nannaya University, Rajahmundry
7. Jawaharlal Nehru Technological University, Anantapur
8. Sri Krishnadevarya University
9. Osmania University, Hyderabad
10. Sri Venkateswara University, Tirupathi