Dear aspirant,

As you have mentioned that your have got 77 percentile in your jee mains , so as per my calculations your predicted all india rank would be somewhat around 2L and if I had to go with St category cut off for nit Andhra cut off for ece branch is 2.1 k as per last year cut off. These cut offs although changes every year depending upon the difficulty level of the exam, the number of candidates appearing in that examination , the number of vacant seats in the college.

For more cut offs of different branches check out the link given below-

https://engineering.careers360.com/articles/jee-main-cutoff-for-nit-andhra-pradesh

https://engineering.careers360.com/jee-main-college-predictor?icn=QnA&ici=qna_answer