Hello, below is a link where you can see many colleges in Chennai offering B.E / B.Tech part time. After clicking on the link, please choose study mode given on the left side of the page as part time and also choose the course as Mechanical Engineering.
https://engineering.careers360.com/colleges/list-of-engineering-colleges-in-india?city=Chennai&study_mode=part%20time°ree=B.E%20/B.Tech
Hope this helps you out. All the best.
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