I see that you want to pursue MCA from NIT Warangal. So you must have to pass NIMCET 2020. In order to do it , you must be having more than 6.5 CGPA in BTech/BCA ... 

What I have seen that NIT Warangal is one of the best colleges to pursue MCA . I have studied previous year rankings , in order to get admission in NIT Warangal , you need to be under 100 rank. In 2018 it was 97. So it should be around this rank. 

Hope it helps. Prepare hard , work hard. Score good. 

Thank you .