Part Time M.Tech

https://www.shiksha.com/engineering/colleges/structural-engineering-colleges-Chennai
This will help.

No, if you are doing part time course then you have to give exams only. There is no importance of attendance.
Good luck.

Hello Sujit,
It is very nice to hear from you that you are interested in doing your M.Tech in power plant engineering albeit as a part time course. However for majority of the colleges offering such part time courses a person needs to attend classes in the evening or night and longer duration classes over the weekend. This intern means that the college has to be in a place where you are working. I would therefore advise you to find out which colleges offer this particular branch in the place where you are working and then please approach them to find out if they are conducting part time courses. Best wishes to you.

I will suggest you to go for a proper full-time course in M.Tech, if you are genuinely interested in it, as only getting a degree will not help you, as you know that it is really difficult to get a good job nowadays. And, for part-time you will have to contact the colleges, as I think most of the colleges nowadays are not giving courses for part-time.

Currently, NIT-Shillong is providing part time M.Tech, check out the details below :
http://2018nitm.nitmeghalaya.in/p/mtech-part-time-1.

DSRUST - Deenbandhu Chhotu Ram University Of Science And Technology offers the same course. Please click the link below. https://www.shiksha.com/engineering/course/m-tech-in-highway-safety-and-engineering-deenbandhu-chhotu-ram-university-of-science-and-technology-sonepat-288350.