Hi , 

So the previous year cut-off for ap polycet in 2017 was 30% of total marks ie 36 marks for general category.  There was no cut offs for SC/ ST. 

Detailed information regarding ap polycet is provided in this link .

https://engineering.careers360.com/articles/ap-polycet

Together there are 12000 combined seats in Government colleges in krishna and guntur districts .

So you definitely have a huge chance of getting a free seat . With reservation you can be sure to get a seat . 

Hope this was helpful. 

For further queries please approach careers360.