Engineering

It's average package is about 4.5 to 5.0 lakhs.

After Diploma, you can go with degree level courses or PG Diploma programs. B.Tech degree can be obtained with specialization in Automobile Engineering or Automobile design Engineering. Admission to the course can be done through lateral entry and thereby you can save one year. Post Graduate Diploma in Automobile Engineering is also suitable for you. Or else, you can try for a job with railways, defense, government departments etc.

You are eligible under your said score.
For more information you can follow the link:
https://www.shiksha.com/college/university-visvesvaraya-college-of-engineering-sampangirama-nagar-bangalore-21460/admission

Mechanical engineering is one of the main engineering disciplines that include the application of laws of physics for Design, Analysis and Manufacturing of mechanical systems.
Students enrolled to the course are taught to make and collect motors and structures, control plants and vehicles of all sizes, understand concepts central to the discipline, such as: Mechanics, Kinematics, Fluid Mechanics, Energy and vitality.
https://www.shiksha.com/engineering/colleges/diploma-mechanical-engineering-colleges-india
Here are the list of some college that provide diploma in mechanical engineering.

SSN College, Chennai
PSG College, Coimbatore
REC, Chennai
SVCE
RMK.

You need to get less than 300 rank in order to get that branch in Osmania University.

Try visiting Amrita school of engineering and know the admission process https://www.shiksha.com/college/asb-amrita-school-of-engineering-bengaluru-sarjapur-road-bangalore-35737?q=Amrita+School+of+Engineering+Bengaluru&rf=searchwidget&landing=ilp

Visit Amrita School of Engineering for mechanical stream the best college for this programme. https://www.shiksha.com/b-tech/course/b-tech-in-mechanical-engineering-asb-amrita-school-of-engineering-bengaluru-sarjapur-road-bangalore-160969