There are various PSU's out there like Maharatna, Mini ratna and Navrathna PUS's, named upon the turnover per Year with Maha being the top and Nav being the newest or the smallest.
As you have not named any hence i am providing you the link which has the list of all the PSU's with their cutoff's https://engineering.careers360.com/articles/what-are-gate-scores-for-psu-recruitment
All the best!!
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