Hello aspirant!  Let me inform you that with a rank of 9 in appgecet mechanical engineering, you can definitely get admission in Mtech in machine design from Andhra university. You must apply for the counselling process. 

You can check out the details from the link below :

https://www.google.com/url?sa=t&source=web&rct=j&url=https://engineering.careers360.com/articles/ap-pgecet-counselling/amp&ved=2ahUKEwj5qpvdnoHjAhUIeisKHZ-TABEQFjACegQIARAB&usg=AOvVaw1KU3qqhlO_Nifb0EWh311D&ampcf=1