Question

The radial distance from the _______________ to the clearance circle is called working depth.

(a) addendum circle

(b) dedendum circle

(c) pitch circle

(d) none of the mentioned

The question was asked in unit test.

This interesting question is from Spur Gears in section Toothed Gearing & Gear Trains of Machine Kinematics

Answer 1

Correct answer is (a) addendum circle

For explanation: Working depth is radial distance from the addendum circle to the clearance circle. It is equal to the sum of the addendum of the two meshing gears.