Hi Aspirant. For M.tech in additive manufacturing, one has to clear GATE. And GATE is held once a year. M. Tech is a course of 2 years. For more details like fees, course details, eligibility criteria, etc. Kindly visit  https://www.careers360.com/university/national-institute-of-technology-warangal/mtech-additive-manufacturing-course

Hope this information has helped you :)