Hello Aspirant,

It is good that you asked question,but you didn't mention the exam you are talking about. I feel like you were asking about GATE cut off for mechanical engineering. If so SC student previous year 2019 cut off was 22.7,in 2018 :23.1,2017:21

Above mentioned are previous year cut offs this year may vary. For more  information use :

https://www.google.com/amp/s/engineering.careers360.com/articles/gate-cutoff-for-me/amp

If it's not about GATE knidly comment i will let you know. Hope this is useful.