Hello Reddy, you have pretty decent score in GATE, with that much of rank you are pretty eligible for most of the colleges out there, though you might not be able to land yourself in top-tier government college. But still keep some college as a backup plan. This will help you in long run. 

Hello aspirant, 

Here is the cutoff ranks for osmania university for previous year

OC Male- 594

OC Female- 497

BC Male- 499

BC Female- 396

ST Male- 406

SC- 322

You need to score atleast 40-45+ approximately.

Here are the cutoffs for jntuh

Structural engineering- OC(5081), ST(9679), BC(6339)

GEO Technical engineering- OC(8909), SC(20000),ST(14000),BC(9000)

Transportation engineering- OC(5776), SC(13000), ST(17000),BC(7500)

Based on the above cut offs predict your chances 

Note: These are only for the reference and not the same every year.

Hope this helps you. All the best.