HI SHAIK,

All IITs and NITs conducts admission for MTech only through GATE, every year. Some IIITs like IIIT Hyderabad and IIIT Delhi, which conducts PG entrance exam like,

• IIT Delhi M.Tech Entrance Exam
• IIIT Hyderabad PGEE

For other PG entrance exams check here : Other PG entrance exams

I hope this answer will help.

All the best for the future!!