Yeah you will surely get admission in NSIT / DTU by scoring 70 % in class 12 th. Further it depends upon your rank in jee mains and cutoff by JAC Delhi .

You can get brochure from  the website of JAC Delhi .

Dear Student,

In order to get admission in DTU and NSIT you should have 60% aggregate marks in PCM in general category there is a relaxation of marks for reserved category. 

Through, JoSSA counselling you can take admission in IITs/NITs/IIITs and GFTIs and through JAC Delhi you can take admission in DTU, NSIT, IIIT-D and IGDTUW.

Good Luck!!