AR 1.6 Gear Ratios Review

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

What's the ratio?

Make sure ratio is reduced

• 7 : 1

• 12 : 84

• 84 : 12

• 1 : 7

When speed is constant, what happens to the value of torque?

• increases
• decreases
• stays constant

A gear ratio is defined as which of the following?

• Teeth of output gear : teeth of input gear

• gear shape : gear shape
• Speed : torque
• input : output

What is the function of the smaller gear?

• Makes the output gear turn slower
• Makes the output gear turn faster
• Makes the larger gears turn in opposite directions.
• Makes the larger gears turn in the same direction.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

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

If you have a DRIVER gear that has 10 teeth driving a DRIVEN gear that has 20 teeth, what is the gear ratio?

• 2:1

• 1:2

• 4:3

• 1:1

Which gear ratio will produce the highest speeds?

• 100:1

• 1:100

• 1:50

• 200:50

What is the gear ratio pictured in this image?

• 3:5

• 3:1

• 5:3

• 1:3

What is the gear ratio of the gears pictured here?

• 1:4

• 4:1

• 4:6

• 7:28