Most of the faculties of NIT Trichy Instrumentation and Control Engineering are good. Some of them are reputed for their teaching methodology. Faculties will guide you in your studies but you need to do self-study to perform well. Don’t depend entirely on the faculties for academics. There are many learning resources available that you can use to learn.
You can expect the same kind of faculty in almost every NIT. Usually, you won’t care about the faculty once you get into the college as after appearing for the entrance exam you have very high expectations from faculty that might not be fulfilled and after that, you need to study online through various sources.
According to my friends at NIT Trichy, there are few faculty members who teach amazingly well that you feel like attending their classes with full enthusiasm. There are also others who are not that cooperative.