Gear Ratio/Mechanism Flashcard

Front

What is a gear ratio?

Back

The gear ratio is the ratio of the number of teeth on two meshing gears, which determines the mechanical advantage and speed of the output gear compared to the input gear.

Front

How do you calculate the gear ratio between two gears?

Back

The gear ratio can be calculated by dividing the number of teeth on the driven gear by the number of teeth on the driving gear.

Front

What is mechanical advantage in the context of gears?

Back

Mechanical advantage refers to the factor by which a mechanism multiplies the force or torque applied to it, often expressed as a ratio.

Front

What is the gear ratio for a 12-tooth driving gear and a 36-tooth driven gear?

Back

The gear ratio is 3:1.

Front

What happens to torque when the gear ratio increases?

Back

As the gear ratio increases, the torque output also increases, providing a mechanical advantage.

Front

What is an idler gear?

Back

An idler gear is a gear that is placed between the driving and driven gears to change the direction of rotation or to maintain spacing without affecting the gear ratio.

Front

What is a gear train?

Back

A gear train is a series of gears that transmit torque and motion from one gear to another, often used to increase or decrease speed and torque.

Front

What is the gear ratio when two gears are equal in size?

Back

The gear ratio is 1:1 when the gears are equal in size.

Front

How does the direction of rotation change in a gear train?

Back

The direction of rotation alternates with each gear; if the first gear turns clockwise, the second gear will turn counterclockwise.

Front

What is the significance of the number of teeth on a gear?

Back

The number of teeth on a gear affects the gear ratio, torque, and speed of the output gear.