LEET

As per the information from offical website there is no direct cutoff to DCTM.

That means the admissions are purely based on national based exams like JEE.

You can directly contact the college to enquire because direct entry seats or management seats might be available for the eligible candidates.

Yes, there is a possibility. You can take admission in BTech at NSUT through LEET examination, but I would like to tell you that there is a criteria that it is only available or applicable for students who are Diploma students. 
It is only for the students who are Diploma holders.

Yes, absolutely you can take addmission through lateral entry Harayana LEET exam ( also known  as OLET-BTech LEET )

After being a Diploma student.

Diploma holders in engineering with at least 45 percent in a relevant Branch can apply for lateral Entry.

No, the CH. DEVI LAL STATE INSTITUTE OF ENGINEERING AND TECHNOLOGY IS HIGHLY BASED ON JEE MAIN or HARYANA LEET.

Students with physics, chemistry, and math in 12th with 45% percent are eligible to give JEE Main and LEET Haryana.

The scorecard of JEE Main and Haryana LEET will decide the college.

Thank you.

Yes admission to the B.E. / B.Tech course at Delhi College of Technology and Management (DCTM) without appearing for the LEET exam is possible if you want to take admission to the regular (first-year) B.Tech program. Admission to the regular B.Tech programme is primarily based on JEE Main score or the Haryana State Technical Education Society (HSTES) exam score, not LEET. LEET is specifically for candidates who wish to join the B.Tech programme in the second year through lateral entry, typically after completing diploma.