The term, whole depth of the gear, shown in the illustration, is equal to __________. Illustration GS-0111

Correct Answer: Option D — C + D

In gear terminology, the whole depth is the total radial distance from the top of the tooth (addendum) to the bottom of the tooth space (dedendum). Based on standard gear geometry illustrations, this is the sum of the addendum (C) and the dedendum (D), representing the full tooth height.