A helical gear has the active face width equal to b pitch p and helix angle α. What should be the minimum value of b in order that contact is maintained across the entire active face of the gear?
(a) p cosα
(b) p secα
(c) p tanα
(d) p cotα
The question was posed to me by my school principal while I was bunking the class.
Origin of the question is Standard Spur Gears in division Toothed Gearing & Gear Trains of Machine Kinematics