Which of the following are not true for petroff’s equation?
(a) Shaft is considered concentric with the bearing
(b) Bearing is subjected to light load
(c) Is used to find coefficient of friction
(d) Frictional torque is given by fpr²l
I was tested on this in my university exam.
I am confused about this question from the Viscosity section in chapter Rolling Contact Bearings, Spur Gears and Helical Gears of Machine Design