T Nagamani, 

Placement percentage for every branch in NIT trichy is above 90.

Almost every students get placed.

There are more than 200 companies visiting the campus. Every major company in every sector visit the campus. They provide very good placement training. The rest depends on you. 

If we talk about lower branches like 

MME- companies that visit are Vedanta Tata Steel etc. 

Yes every major company in every sector visit the campus. 

Hope it helps.