I must tell you that the faculty of all NITs is quite similar. 

You might be disappointed at the faculty of NIT Trichy or any other top engineering college. This is because the bar of your expectations will be high after clearing such a competitive exam. But don’t worry, you’ll really like some of the teachers from the Instrumentation and Control department. You’ll want to attend their lectures. 

Make sure to have friendly relations with your seniors. They will tell you a lot about the different faculty members. Moreover, be consistent in your self study routine and take help from online resources. Don’t expect the faculty to spoon feed you.