Hello Sahil 

According to ranking's NIT Warangal is good than Vnit Nagpur.But it's your choice the field in which you are interested not the college because both are NIT's and ranking doesn't matter in learning.

You are interested in programming then you can go for Vnit Nagpur and if you are interested in Electronics and Communication then you can go for Nit Warangal.

So I hope you find this helpful 

Thank you 

Good luck.