i scored 34648 rank i will get main campus computerscience group 

Hey Rajeshwaran,

SRM Institute of Science and Technology will be releasing the cutoff of SRMJEEE 2019. The minimum ranks which the canidates are requested to secure to have higher chances of admission constitute the cutoff of SRMJEEE 2019. While preparing the cutoff, the authorities will be taking many factors related to SRMJEEE such as previous year cutoff trends, level of difficulty, etc into consideration.

Going by last year trends for the SRM Main Campus, the closing rank for Biomedical engineering was 54000 and for Biotechnology Engineering was 48000. Seeing your rank, I'd say you have really good chances.

Good Luck.