Hey Gokul
It may vary from college to college
But generally it is betwt 40-50 thousands
Per semester.
Exclusive of mess or food charges.
You can check the fee for specific college on the college main site.
TQ.

Hello,

the fees structure for NIT trichy is 

Institute Fee (For SEM-1)

General/OBC: Rs.44,500/-

SC/ST: Rs.9,600/-

PWD(GEN/OBC): Rs.44,600/-

however this is not inclusive of hostel fees or any other fees  and fees structure varies slightly from one NIT to other 

hope this helps you !

all the best !