A _____ Circle is the Circle from Which the Involute

Question

A _____ circle is the circle from which the involute tooth profile begins.
A) dedendum
B) addendum
C) pitch
D) base

Accepted Answer

The base circle is the circle from which the involute tooth profile begins. The dedendum circle is the circle to which the tooth profile extends at the bottom, while the addendum circle is the circle to which the tooth profile extends at the top. The pitch circle is the circle that represents the average diameter of the gear wheel.