Who is the most friendly professor in IIT Madras? Why?

My brother is an alumnus of IIT Madras. During his time, Professor Kamakoti was one of the friendliest professors at IITM. 

Whenever sir caught someone sleeping in the class or coming late for the lecture, he would simply crack a joke and lighten everyone’s mood. He was an absolute master of his subject. The only thing which frustrated him was the lack of interest among students towards lab coursework. 

My brother is not sure if sir still teaches at IITM, but he always fondly remembers sir.

According to one of my friends, who is an alumnus of IIT Madras, it is Prof. C Balaji from Mechanical Engineering Department.

He is an amicable person and is very understanding towards students. In fact, he is the coolest professor that you will ever meet. You can give him thousands of reasons for being late to the class or feeling sleepy during the lectures and yet, he will listen calmly and try understanding your problem. He will rather crack a joke on it.

You can share anything with him without any second thought. He will attentively listen to it and give you some valuable feedback. It is pretty evident from this that he is more of a friend than a professor.