NSUT Delhi is a government engineering college and unlike other private engineering colleges, it does not have a management quota at least officially.
Although there are many rumors of unethical means adopted in admission, that is something every college is involved into a certain extent, and wasting your time on that is futile.
The college, however, does have a staff quota, and many candidates misuse that, by pretending to be a direct relation of a staff member.
So be aware of such activities!