Dear Chandrakanth, there are Institutions that offer Part time/Full time/ Evening classes for B.Tech. These Institutions are spread all across India. So if you can let us know which state and which course i.e either Full time or Part time that you want to pursue, we can help you further. IGNOU has B.Tech in Mechanical Engineering branch for its Distance Education. Acharya Nagarjuna University is one another Institute.