when central University of Andhra Pradesh will reopen for offline classes for 3rd semester
See there are no official notification for the reopening of the campus for Central University of Andhra Pradesh for any of the courses. So you should wait some times for the official notification (if any). Its probable that a third wave of covid is approaching to India as a result there are possibilities that the classes will be online as its going on. But lets see what happens and what GOI takes decision.
To know more about Central University of Andhrapradesh visit the link below:
https://www.careers360.com/university/central-university-of-andhra-pradesh-anantapur
I hope this answer helps. All the very best for your future endeavors!