I think there is a typo it would be Diploma in Mechanical Engineering. Now AANM and VVSR polytechnic is a well equipped college. The college is a private one under State Board of Technical Education and Training, Hyderabad. Now as per the internet there are no information available regarding the ranks required for the college. So we can't conclude any information here. Although I would recommend you that try to score as good as you can and attempt the counselling. This is the only way out. Now if you can, you may contact some of the student who are studying in the college and they can give you a insight in it.
To know more about the college visit the link below:
I hope this answer helps. All the very best for your future endeavors!