Gear Ratio Quiz

How many times must axle A turn to turn axle B one time?

• 1 time

• 3 times

• 9 times

• 15 times

How many times must axle B turn to turn axle C one time?

• 1 time

• 3 times

• 9 times

• 15 times

How many times must axle A turn to turn axle C one time?

• 1 time

• 3 times

• 9 times

• 15 times

What would the gear ratio be if the gear on axle C was the Driver gear?

• 1:3

• 3:1

• 1:9

• 9:1

What size driven gear would be needed to make a 9:1 ratio if the driver gear had 15 teeth?

• 135 teeth

• 45 teeth

• 30 teeth

• 60 teeth

How are compound gear ratios calculated using fractions?

• By adding fractions

• By subtracting fractions

• By multiplying fractions

• By dividing fractions

How can you build a gear train that results in a faster output speed?

• Use larger gears

• Use smaller gears

• Increase the number of gears

• Decrease the number of gears

How can you build a gear train that results in a slower output speed but would have more torque?

• Use larger gears

• Use smaller gears

• Increase the number of gears

• Decrease the number of gears

When a compound gear ratio is written as a fraction, what happens to the output speed (RPMs) as the numerator increases?

• Output speed increases

• Output speed decreases

• Output speed remains the same

• Output speed doubles

When a compound gear ratio is written as a fraction, what happens to the output speed (RPMs) as the denominator increases?

• Output speed increases

• Output speed decreases

• Output speed remains the same

• Output speed doubles