Question

2.A pair of equal three stepped pulleys connects two shafts A and B by means of a
crossed belt. A is the driver having a constant speed of 75 rpm. Highest speed of B is
225 rpm. Diameter of largest step is 15 inch. Find the other two speeds of B and the
diameters of all steps.
Using the same data as in problem 2, except that is belt is open and distance
between centers is 18 inch. Find the diameters of the middle pair of steps.

Answer 1

The dia of center step of both the pulley will be same which is the mean of the dia of largest step and smallest step. Wich comes out to be 10 inch.