Engineering Entrance Exam

Yes, if a candidate has secured the 30500 rank in JEE Main scores, they are eligible to get a scholarship. The university offers scholarships on the basis of performance in national-level entrance exams, and the JEE Mains is one of those. Check out the concession on tuition fees provided by the university to the candidates who have achieved a 30,500 rank or more in the JEE Mains exam: 

Yes  you can gat a admission to B.E / B.Tech engineering programs in West Bengal, including those outside of WBJEE RERF, is possible without the need to sit for the WBJEE exam but candidate should meet the eligibility criteria in 10+2 and Science stream and you have score 45% minimum to get a admission in RERF.

Getting admission to B Tech government colleges in ECE department depends on the rank, reservation category and competition. As you get 64 percentile if you would be reservation category student they you have a high chances of getting seat in a government college in ECE department. But if you from general category the chances of getting seat is more likely less.

There is very less chance to get tier 1,2 or 3 colleges, so if you are interested and possible then you can give one more chance to yourself and increase your percentile otherwise you can go towards private colleges according to your financial condition.