Hello Aspirant,

NIMCET is a common entrance exam conducted by  National Institute of Technology for MCA aspirants. Through this exam with a good rank you can get into any one of the NITs. Your all India rank is not enough for any NIT and coming to your category rank , EWS category is a recent addition, so though you may chance at few low ranked NITs , it may vary with the number of seats available and number of applicants, hence an exact possibility cannot be predicted. So based on your category rank the NITs you may get are :

NIT,Raipur-639

NIT, Jamshedpur-511

NIT, Kurukshetra-545

NIT, Agartala-662

Note that  these are NITs with their general category cutoffs, considering EWS category may have slightly lower cutoffs than these ,you may have possibilities.

You may use the below link to access all other NIMCET related information:

https://it.careers360.com/exams/nimcet/articles

All the best