Hey Bharati Das,

VIT  University is ranked as No.1 private university in India.

It is ranked as No.1 private univeristy by NIRF MHRD Government of India 2018 because it has well equipped labs,infrastructure, faculty,facilities,administration, research and development too! 

For you marks you have more chances to get admission in VIT University Vellore campus!  And even you can get a seat in Mechanical engineering  in VIT university in vellore campus! 

For more details and rank predictor you can go through following website link which may help you,

https://engineering.careers360.com/articles/viteee-cutoff

All the best!