what will be my tnea rank if I have a cutoff of 190
TNEA rank can not be determined only on the basis of marks solely. There are a lot many more factors which are taken into account while rank determination like, category, gender, state of domicile, etc. That is why no website lists marks vs rank comparison of TNEA. So the best thing will be to wait for the official authorities to publish the results!
Best of luck!