NIT Delhi is located in Sector 3, Dwarka, Delhi — easy to reach by metro.
Closest metro station: Dwarka Sector 10 on the Blue Line (Line 3). from there it's roughly 2 km to NIT Delhi, easily covered by auto/e-rickshaw (Rs.20-40).
step-by-step from major points:
most students use e-rickshaws or bikes from Dwarka Sector 10 for the last mile. the area is well-connected and affordable. Blue Line is the main line you need — runs from Noida Electronic City to Dwarka Sector 21, covering all of Delhi.
There are two modes to teach NIT Delhi by Delhi Metro and bus.
Delhi Metro
Bus
Hope this helps you!