Gear Ratio Quiz

A 36 tooth driving gear (connected to the motor) is moving a 12 tooth driven gear. What is the gear ratio?... It has a speed advantage.

• 3:1

• 1:3

• 3:3

• 1:1

A 12 Tooth driving gear (connected to the motor) is connected to a 36 tooth driven gear. What is the gear ratio and mechanical advantage?

• 3 : 1 Torque Advantage

• 3 : 1 Speed Advantage

• no Mechanical Advantage

• 1 : 3 Torque Advantage

When gears are equal in size, what is the gear ratio?

• There is no gear ratio when sizes are equal

• 1:3

• 2:5

• 1:1

What is the gear ratio with a driving gear with 40 teeth and a driven gear with 8 teeth?

Make sure ratio is reduced to lowest terms

• 8 : 40

• 1 : 5

• 5 : 1

• 40 : 8

The input gear has 6 teeth.

The output gear has 48 teeth. The gear ratio is...

Make sure ratio is reduced to lowest terms

• 1 : 8

• 8 : 1

• 6 : 48

• 48 : 6

If the pink gear is the input gear and the blue gear is the output gear, what will happen with speed and torque?

• increase speed, decrease torque

• decrease speed, increase torque

• speed & torque remain constant

• No mechanical advantage

What is a Ratio?

• It's a comparison of two things
• Multiplying two fractions 
• A number over another number
• Two decimals that can be multiplied

A force in a circular direction is called

• rotary motion.

• torque.

Movement in a circular motion

• Rotary 
• Oscillating
• Linear
• Reciprocating

What is the BEST explanation for a gear train with a 7:1 gear ratio?

• The drive gear turns 1 time for every 7 turns of the driven gear.

• The driven gear turns 7 times for 1 turn of the drive gear.

• The gear goes fast!