Question

The cone clutches have become obsolete because of

(a) small cone angles

(b) exposure to dirt and dust

(c) difficulty in disengaging

(d) all of the mentioned

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

I need to ask this question from Friction Clutches topic in section Friction of Machine Kinematics

Answer 1

Right answer is (d) all of the mentioned

The best explanation: A cone clutch, was extensively used in automobiles, but now-a-days it has been replaced completely by the disc clutch. In a cone clutch, the driver is keyed to the driving shaft by a sunk key and has an inside conical surface or face which exactly fits into the outside conical surface of the driven.