What is the name of the device that utilizes gears and gear trains to provide torque conversions and speed from a rotating source?

A transmission refers to the gearbox, and is used in the shifting of speed and torque. Many vehicles today use an automatic transmission, meaning that the shift or change happens automatically, while manual transmissions must be changed by the operator.

Asked by DRay585 · Last updated 5 years ago · 7.6K views · SOURCE