Question

The angle between the axes of two shafts connected by Hooke’s joint is. Determine the angle turned by the driving shaft when the velocity ratio is unity (in degree).1. 43.912. 45.323. 46.784. 48.88

Answer 1

et θ be the angle turned through by the driving shaft.

We know that velocity ratio,

Therefore, ω1 / ω = cos α / 1 – cos2θsin2α

The velocity ratio will be maximum when cos2θ is minimum, i.e. when it is at unity, cos2θ = 1 

Therefore, θ = 0° or 180°.