EWS Category is applicable for the Unreserved students who aren't getting any reservation such as SC/ST/OBC. So if you are a EWS student then you have two options to go for: One is Unresrved/General and the another one is PwD or Non-PwD i.e., Gen-EWS/GEN-PwD. So fill your form accordingly.

To know more about NIT AP visit the link below:

https://www.careers360.com/university/national-institute-of-technology-andhra-pradesh

I hope this answer helps. All the very best for your future endeavors!