Hello Lakshmi,
    In order to get a seat in SV government polytechnic college, you rank should be pretty good...

    I am mentioning the closing ranks of different branches for past few years..

CIVIL..4,500
ECE..1,600
CSE..3,500
MEC..5,100
Chemical..11,500
EEE..2,300

The above mentioned closing ranks are for OC girl category, hope this helps and Good luck...!!