Not really. OU, JNTUH - admissions will be through TS PGECET. However GATE qualified candidates need not appear for the entrance test. They will have a separate application process and will be given preference over TS PGECET candidates. Applications will be common through TS PGECET website. Pls check that.

the process of admission according to the official website states that one must be gate qualified to apply for mtech in either of jntu or Osmania university which is followed by an interview.

and for these two colleges you have to apply individually which is very similar to that of the other colleges.