For the mechanical aptitude tests, it is very common to see a couple of questions concerning gears. Gears are a system of interlocking wheels that can create immense mechanical advantages. The amount of mechanical advantage, however, will depend on the gear ratio; that is, on the relation in size between the gears.
Let’s start with something straightforward first.
Problems like these are simple when you know the shortcut.
Now, let’s see a more complicated version of the same thing.
There are two questions regarding this picture, so let’s take them one at a time, first mechanical advantage.
Now, let’s examine the gear ratio and how that impacts the amount of turning these gears do.
Now for a couple fun ones to try by yourself…
Last one…
The answer here is C because we know the ratio is 1:2 which means the larger gear makes half as many turns as the smaller one. Half of 12 turns is 6.
Thanks for watching this video tutorial.
