Hello,

To get seat in M.tech your must appear for entrance exam and qualify in it. There are national level, state level and university level entrance exams like GATE, BITS HD, TS PGECET, AP PGECET, Karnataka PGECET etc. Depending on the college you are interested in, you need to appear for entrance exam. This is if you want to get admission through entrance exam. You can check the list of entrance exams for M.Tech in India using the link below

https://engineering.careers360.com/articles/what-are-m-tech-entrance-exams-except-gate

You need to qualify in the exam but first you need to check if the M.Tech Structural Engineering course is offered in the college that you are interested in. If you qualify you need to participate in counselling, the counselling process vary depending on the exam/institute so you should check the details before applying. You will be allotted a seat based on your rank, category and preference. If you are satisfied with the allotment you can join in the college if not you can participate in further rounds if any depending on the rules of the counselling process.