One of my friends is presently studying at NIT Kurukshetra, and he has a good idea about NIT Delhi. But he does not tell me more about NIT Jamshedpur, as he has limited knowledge about this institute. 

The following table shows a brief overview of these three institutes:

The above table shows that NIT Kurukshetra(KKR) > NIT Jamshedpur> NIT Delhi.

• Presently, the college administration of NIT KKR has updated their curriculum, in which you have to read 6 core subjects in your first-year study. However, it will help you to get closer to your respective branch. 
• Recently, the director of this institute, namely Dr. Satish Kumar. Since his appointment, this institute is progressing continuously. My friend told me that within 6months, he opened a swimming pool, which is Olympic Standards. 
• The classes are completely air-conditioned, with an installation of a new supercomputer. Indeed, NIT KKR was not considered a good college a few years back, but these days it is not at all behind the other top institutes as it is developing gradually.

Besides, NIT Delhi is a newly opened institute with a temporary college campus. Someone mentioned that the students have to travel approximately 2 hours from their hostel room to the college rooms in NIT Delhi, which is quite tiresome. The Alumni Network is completely lagging as it is a new institute. 

Additionally, NIT Jamshedpur provides good placement in comparison to NIT Kurukshetra. It is the only thing that supports the rankings of an institute, respecting other colleges. Another important thing is that if you are from Eastern Part, then opt for NIT Jamshedpur.