Hello,
JNGEC offers 4 courses for B.E. and the eligibility criteria is:-

• 45% in HSC Board 10+2
  
• based on marks in JEE
  

There is no cutoff specified for JEE Main. As it is a government college it will take cutoff as specified by NTA for JEE Main Admission

Any way if you have qualified the entrance then you should apply for it. you will get it with your categorical rank and if you have home state quota the that will be better.

for more details you can visit the site:- https://www.careers360.com/colleges/jawaharlal-nehru-government-engineering-college-sundernagar

Hope it helps!