Which is the best department at NIT Jamshedpur?

The branch preferences at any institute completely depend on your interest. 

Additionally, if you want to know the placement facts, then Electronics and Computer Science are the best. These two engineering branches are flourishing in these days of globalization. Except for Mechanical Engineering, the other core engineering branches are completely down. 

The fact is that the placement totally depends on the recent trend of the industry. The situation is entirely reversible as core sectors are down while IT companies are blooming. 

All the branches of NIT Jamshedpur are good enough, considering the industry perspectives, which is quite important to choose the companies at the time of placement.