Simple planetary gearsets are being discussed. Technician A says any one of the three members can be used as the driving or input member. Technician B says the driven or output member is always the ring gear. Who is correct?
A) A only
B) B only
C) both A and B
D) neither A nor B

Question

Quizplus · Accepted Answer

Technician A is correct because in a simple planetary gearset, any of the three members (sun gear, planet carrier, or ring gear) can be used as the driving or input member. Technician B is incorrect because the driven or output member is not always the ring gear; it can be any of the three members depending on the desired gear ratio and configuration.

Simple Planetary Gearsets Are Being Discussed