Who are some of the best professors at Madras Institute of Technology (MIT)? And why?

My friend studied at MIT in 2013 and he says there are many reputable names from different departments like Prof. K Jeyaraman in the Aeronautical Engineering department, or Dr. PK Kanagasabapathy from the Instrumentation Engineering department, or Dr. A Rajadurai who was the former dean of MIT- he was an expert in Metallurgy and is one of the best professors owned by MIT. 

Nevertheless, because my friend has his personal favorites, I'd write about them here -

• Late Prof. VK Narayanan was dedicated to his profession and his students. His room was next to the internet room on the admin floor. My friend used to converse with him on any topic necessary.
• It was because of him that he discovered KB Chandrasekar, the same KBC of the AU KBC research centre where my friend is an employee now. He forsook TCS to join there.

There have been innumerable instances where my friend was guided and helped by prof KVN. 

• One such incident is of the day when someone from the All India Radio came to him to introduce a new program to him on Information Technology. 
• He had approached him to ask him for lectures on computers to be relayed on AIR, and Prof Mathiazhagan had already done the first episode; but Prof KVN calmly made him understand that he should give such opportunities to young students.
• He pointed at my friend and highlighted his erudition on knowledge to do with the internet, which landed him with 20+ episodes.
• Not only this, he once helped a student to apply to foreign universities and she landed in a good US university, one more student with his help in association with my friend got a job with Blackberry and now lives in San Francisco. 
• Once my friend wanted to build a website for MIT and guess who provided all the support - Prof. KVN did. He learned HTML, found a domain name, and created official MIT emails for all the staff members.

He had been a professor, friend, and guide to my friend.