My brother pursued his MS in Chemical Engineering from IIT Madras back in 2016 and these are some of his experiences for the overall MS program offered at IIT Madras-
Though not specific to the Mechanical branch, I hope this information about the MS program at IIT Madras helped you gain important insights regarding the same.
IIT Madras is a tremendous college. The ambiance, the seniors, the faculty all are outstanding and cooperative. Being a part of IIT Madras, I can say that the institution provides for a competitive learning field for engineering and career options.
Exposure:
MS candidates have been placed in vast numbers with great offers. You will get to learn a lot and build yourself up for your career ahead. You will get industrial exposure, seminars and internships also. Conducted by big companies like Cognizant, PwC, etc. You would not regret having gone for it, as the college life here is fun and quite happening.