jntuk Previous-Question-Papers and materials
http://forum.jntuworld.com/showthread.php?33612-JNTU-KAKINADA-B-Tech-Semester-Wise-Previous-Question-Papers-Collection
http://forum.jntuworld.com/showthread.php?33612-JNTU-KAKINADA-B-Tech-Semester-Wise-Previous-Question-Papers-Collection