Hi there, The ews -general category cutoff is not yet out. But the last year closing ranking  for general category for following branches are

Branch                          closing ranking(home                                                           state)

1. Civil                          42878

2. CS                              29652

3. Electrical                  40024

4. ENTc                          37518

The cutoff for EWS will be less than general category so there is chance of you to get a good branch in nit patna.

Good luck.