Hi Aspirant,

Based on previous year cut off rank for 51 marks is 420.

As this rank vary from year to year based on some factors like the number of students attended, difficulty of the exam, number of seats available and previous year cut off's.

So, you may expect rank from 400-1000.

You can refer this link for more information-

https://www.careers360.com/exams/karnataka-pgcet/amp

Hope this helps!

All the best.