Dear Aspirant,

here is all detail that you need to do btech in du

http://www.htcampus.com/article/complete-guide-delhi-university-du-btech-admission/

Thankyou 

Good Luck

The cutoff depends on the college and the stream that you opt for. For example, the cutoff for general category in Computer scienece and electronics in some colleges are:

Acharya nar dev: CS-94 and electronics-94

ARSD: CS-92 and electronics-97

Thank You!