Interference is caused by?
(a) Overlapping of tooth profiles
(b) Large size of dedendum
(c) Meshing of involute and no-involute profiles
(d) All of the mentioned
I have been asked this question in an international level competition.
This question is part of the Inerference, Undercutting & Backlash concept in section Rolling Contact Bearings, Spur Gears and Helical Gears of Machine Design