Hello!

For getting admission in NIT Trichy,

Your JEE mains score should be atleast 95 percentile for any branch in general.  for OBC, it can be upto 92 percentile.

This will make a rank of about 1lakh at the maximum.

So you can aim for 160/360 marks at the minimum.

However to get a good branch, you should aim for atleast 30k AIR to be on a safer side.

hope this helps!