The single ratio gearbox motor shown opposite is suitable for model and light industrial applications and has a gear ratio of 100:1 - Leaving Cert Engineering - Question d - 2022

A gear ratio of 100:1 means that for every 100 revolutions of the input shaft, the output shaft completes 1 revolution. This indicates that the output shaft rotates at a significantly slower speed compared to the input shaft. For example, if the input shaft is spinning at 2000 RPM (revolutions per minute), the output shaft would rotate at 20 RPM. This speed reduction is achieved through a series of gear reductions within the gearbox, effectively transmitting high input speeds into lower output speeds.