M.Tech

Hello Mekala,
There are plenty of entrance exams for seeking admission to M.Tech. The most prominent of them is GATE. I am attaching one link that will give you an idea of different examinations that you are required to give if you are seeking admission in the different places or different universities in India. Even though the information is of 2016 vintage, it is still relevant today.
https://www-shiksha-com.cdn.ampproject.org/v/s/www.shiksha.com/engineering/articles/amp/m-tech-entrance-examinations-in-india-blogId-12539?amp_js_v=a2&_gsa=1&usqp=mq331AQCCAE=#referrer=https://www.google.com&_tf=From %1$s&share=https://www.shiksha.com/engineering/articles/m-tech-entrance-examinations-in-india-blogId-12539

Please check the eligibility as below. Candidates wishing to pursue the course are required to fulfill the below-mentioned minimum eligibility criteria. Graduation (BE /B.Tech or equivalent qualification), completed from a recognized institute. A minimum aggregate score of 50% at the level of graduation. The Admission Process is as below. Admission to the course is based on the candidates performance in a relevant institutional/ State/ national-level entrance exam, such as GATE which is an all-India level examination held for admission to the country IITs. GATE scores are also accepted by most reputed engineering institutes of the country. Students qualifying the exam with the set minimum eligible cut-off score are invited for the subsequent round of counseling, based on which, the final selection is made. The counseling process consists of rounds of Group Discussion and Personal Interview, wherein the candidate's general aptitude for the course is examined, and a merit list is made, allotting seats to the qualifying candidates. Some institutes in India also provide admission to eligible candidates based on their obtained merit at the level of graduation. Some of the major entrance exams conducted in the country for admission to the course are listed below:
1. Andhra Pradesh PGECET (Andhra Pradesh Post-Graduate Engineering Common Entrance Test)
2. TS PGECET (Telangana Post-Graduate Engineering Common Entrance Test)
3. Karnataka PGCET (Karnataka Post Graduate Common Entrance Test)
4. VITMEE (VIT University Masters Entrance Examination)
5. GAT (GITAM Admission Test).