Question

The face of the tooth is the

(a) surface of the top of tooth

(b) surface of tooth above the pitch surface

(c) width of tooth below the pitch surface

(d) width of tooth measured along the pitch circle

This question was addressed to me during an online interview.

Enquiry is from Systems of Gear Teeth in division Toothed Gearing & Gear Trains of Machine Kinematics

Answer 1

Right answer is (b) surface of tooth above the pitch surface

The explanation is: Face of tooth is the surface of the gear tooth above the pitch surface.

Flank of tooth is the surface of the gear tooth below the pitch surface.