Telangana conducts its own state-level postgraduate entrance test called Telangana State Post Graduate Engineering Common Entrance Test (TS PGECET). However, for admission at Jawaharlal Nehru Technical University, Hyderabad, they give preference to students who have GATE scores rather than TS PGECET.
So this is very unpredictable and there is no certainty that you will even get a seat. The best thing you can do is score a rank in the top 50 in TS PGECET and hope. You may get less popular subjects such as Biomedical Engineering.