Hey Aditya,

Neither DTU nor NSUT provide BBA courses in their college. In DU BBA in provided in some of the colleges affiliated to it but the admission is based on the entrance test called DU JAT for BBA (FIA). DTU is only for technological courses and not for BBA. Similarly in NSUT the only degree provided under UG is B.E.

You may check further colleges like Guru Gobind Singh Indraprastha University, Symbiosis International University, Pune, NMIMS University these are some good colleges we have right now for BBA. You can also check St. Xavier's Kolkata for BMS which is equivalent to BBA. 

hope this helps!