Some of my friends studied at Madan Mohan Malviya University of Technology (MMMUT). According to them, it is a very good university to pursue your studies.
You will grow in the field that you choose to do your graduation in. The college will certainly provide you with ample opportunities to take part in.
The location of the campus might be a bit of a problem as Gorakhpur has no direct flights or even trains on a daily basis from many parts of the country.
As for placements, the university is above average since many companies visit the campus to recruit many students. It is how you can make the best out of it. Comparatively, for B.Tech, the university is a good choice.