Hello student,
Yes, even if you have pursued B.Tech in Mechanical Engineering, you can pursue Masters in Machine Learning. Now-a-days it hardly matters what UG degree you have because if you have the right skillsets to enter an industry, you are hired with huge salaries. Morover, for master, you can also opt for online courses from UPGRAD and all which will provide you better insights from the top educators of IIT, NIT, etc. However, you must know all the basics of programming and data structures and algorithms prior to the masters.
I hope this helps, All the Best!
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