Gear Ratio Genius Quiz

What is a gear ratio?

• The diameter of a gear

• The speed of a gear

• The ratio of the teeth of two gears in mesh

• The weight of a gear

If Gear A has 10 teeth and meshes with Gear B which has 20 teeth, what is the gear ratio of Gear A to Gear B?

• 1:2

• 2:1

• 1:1

• 10:20

What does a gear ratio of 1:4 mean?

• The first gear is four times larger than the second gear.

• The first gear has four times as many teeth as the second gear.

• The second gear will turn four times for each turn of the first gear.

• The first gear will turn four times for each turn of the second gear.

In a bicycle, if the front gear has 40 teeth and the rear gear has 20 teeth, what is the gear ratio?

• 1:2

• 2:1

• 40:20

• 20:40

What type of gear ratio would you use to increase speed?

• High gear ratio

• Low gear ratio

• Equal gear ratio

• None of the above

What type of gear ratio would you use to increase torque?

• High gear ratio

• Low gear ratio

• Equal gear ratio

• None of the above

If a gear system increases the speed, what happens to the torque?

• It increases

• It decreases

• It stays the same

• It becomes zero

If Gear A has 15 teeth and Gear B has 45 teeth, what is the gear ratio from A to B?

• 1:3

• 3:1

• 15:45

• 45:15

What is the gear ratio if a driving gear with 12 teeth drives a driven gear with 36 teeth?

• 1:3

• 3:1

• 12:36

• 36:12

Which of the following statements is true about gear ratios?

• A higher gear ratio always means a higher speed.

• A lower gear ratio always means a higher torque.

• Gear ratios are irrelevant to the performance of a machine.

• Gear ratios can be used to adjust the speed and torque of a machine.