# In a cone pulley, if the sum of radii of the pulleys on the driving and driven shafts is constant, then

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In a cone pulley, if the sum of radii of the pulleys on the driving and driven shafts is constant, then

(a) open belt drive is recommended

(b) crossed belt drive is recommended

(c) both open belt drive and crossed belt drive is recommended

(d) the drive is recommended depending upon the torque transmitted

I have been asked this question during a job interview.

This is a very interesting question from Types of Belts topic in section Belt, Rope and Chain Drives of Machine Kinematics

by (106k points)
The correct answer is (b) crossed belt drive is recommended

The explanation is: Cone pulley drive, is used for changing the speed of the driven shaft while the main or driving shaft runs at constant speed. This is accomplished by shifting the belt from one part of the steps to the other.

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