Does gap affects the placement

Hello everyone,
As CCAT results are out, I have got rank(A+B)=357 ,, and My percentage in 10th=70,12th=73.2,B.E=7 GPA, and I am 2012 passed out, So I want suggestion for selecting best c-DAC institute based on my rank and do these 3 years gap is going to affect in getting placement process.

kindly revert back.
Thanx All!