Hi Surya,
Admission to NITs for M.tech/M.Arch is done by the common CCMT counselling. The eligibility requirements state that you should have a valid GATE score from any of the past three years. Also, you must have secured 6.5 CGPA or 60% marks in your undergraduate degree if you are a general category student. For SC/ST, it is 6.0 CGPA or 55%. Check out CCMT official website for more details.
All the best.
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