Answer :
Final answer:
The two main varieties of lathe centers are the live center and the dead center. A live center rotates with the workpiece, while a dead center does not rotate and provides stability to the workpiece.
Explanation:
In engineering, the two main varieties of lathe centers are the live center and the dead center. A live center has rotating elements and is used to support the workpiece during turning operations on a lathe. It has a taper shaft and bearings that allow it to rotate with the workpiece.
In contrast, a dead center does not rotate and is used for supporting the workpiece when it cannot or should not rotate. It has a point or flat surface that contacts the workpiece, providing stability and preventing it from moving.
