Hi Dear, 

yes , if you give MAT entrance exam in may 2018 so your score will be valid for one year so your score will be accepted in NIT wrg for admission in 2019-21 session. 

i hope this information is helpful for you 

for more queries just contact with us 

thank you 

good luck

Yes Uday MAT conducted in May 2018 is for getting admission in all the b-schools for next session of 2019-21 only.  One good thing about giving MAT exam in May 2018 is that you can get to know your score and position where you stand. Through last year cut-off records you can also estimate the colleges in which you have a good probability of getting a call. And if your scores are not good enough to get a call from your dream b-schools then you can re-appear for MAT exam happening consecutively in Oct, Dec, Feb.

All the best for your preparations!!