Hi , 

So all the details regarding previous cut-offs and closing ranks are provided in these links   

https://www.careers360.com/colleges/nss-college-of-engineering-palakkad/cut-off

https://collegedunia.com/college/14404-nss-college-of-engineering-nssce-palakkad/cutoff-keam

For EC , the round 1 closing rank of EC was 5473 and round 2 closing rank was 8760 for the general category. Assuming your 12th stream to be HSE , you rank would be somewhere between 3500 and 4000. 

So you will get admission in NSS college for EC. 

Hope this was helpful.  

For further queries please approach careers360.