B. K. N. Govt. Polytechnic, Narnaul

Useful - Links:

​​​​​​​​​​​​​​​​​​​​​NPTEL      Link    https://nptel.ac.in/

Swayam    Link:   https://swayam.gov.in/

Various online courses & Books Through Swayam

Link:   https://storage.googleapis.com/uniquecourses/online.html