Question

Gears having teeth cut on the rotating face plane of the gear and mate with standard involute spur gears are known as

(a) mitre gear

(b) face gear

(c) spur gears on helical gears

(d) none of the mentioned

I got this question by my college professor while I was bunking the class.

This intriguing question comes from Types of Gears topic in portion Toothed Gearing & Gear Trains of Machine Kinematics

Answer 1

Correct option is (b) face gear

To elaborate: Worm gears are used for obtaining large speed reduction between non-intersecting shafts making an angle of 90^0 with each other.

Gears having teeth cut on the rotating face plane of the gear and mate with standard involute spur gears are known as face gears.