hi,
see the main campus of vellore institute of technology is at chennai, however vit ap an d vit bhopal both of the institute has established on 2017, so both of it are quite new, you may have to go for bangalore or chennai campus for placement. however the campus of both of the institute is good , and based on students review faculty are better in vit ap. so you must decide as per your location and expenses.
however you will not face any issue for being a north Indian, students from all over India join vIT since it is one of the best private institute In india. if you have good communication skill I think you will face no difficulty to make friends or communicate with natives.
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