Dear aspirant,
As per the rank received by you which is 30k let me tell you that if I would go by the previous years trends then you stand fair chances to get a seat in this government engineering college jamui.
However various factors are considered while deciding the cut offs like number of candidates appearing in the examination, number of vacant seats in college, previous years cut offs and difficulty level of the paper.
For more information you can check out the link given below-
https://www.careers360.com/colleges/government-engineering-college-jamui