Hello Sai.

There are many different kinds of MTECH entrance examinations in India, national, state and university level.

GATE (Graduate Aptitude Test in Engineering) is one of the major entrance examinations in India for admission in MTech and PHD courses. It is a national level examination that is conducted jointly by the Indian Institute of Science (IIS) and Indian Institute of Technology (IIT) on behalf of the National Coordination Board. Giving this exam will enable you to try for Mtech programmes in colleges all around India. You can give the examination from your state itself.

Visit https://engineering.careers360.com/exams/gate to get more information regarding GATE examination.

I would have been able to give you better suggestions if you would have mentioned your preferred states. 

Visit https://engineering.careers360.com/exams?level=2 to get detailed information regarding all the MTech entrance examinations and their locations in India. 

Hope that helped!