Hey Hardik!

Admission of ECA quota students is done on the basis of separate process which consists of  two trials 1) preliminary trials 2) final trials. Then the merit list is declared for different colleges and university separately. And the cutoff for these students does not come along with the general cutoffs of delhi university.

To know the whole admission procedure for ECA aspirants , follow the given link :

https://www.google.com/url?sa=t&source=web&rct=j&url=http://du.ac.in/adm2019/pdf/BulletinForUpload30May2019.pdf&ved=2ahUKEwii1uHVo9riAhUQYysKHeFZCYUQFjAJegQIARAB&usg=AOvVaw0AoicM8jyL8I4M-NqG1dwV&cshid=1560010535702

Hope it helps!