Gear System Quiz- from Youtube Video

What happens to torque when a smaller gear drives a larger gear?

• Torque decreases

• Torque increases

• Torque remains the same

• Torque becomes zero

In a gear system, if the driver gear has 20 teeth and the driven gear has 60 teeth, what is the mechanical advantage?

• 1:3

• 3:1

• 1:1

• 2:1

When torque increases in a gear system, what happens to rotational speed?

• It increases proportionally

• It decreases proportionally

• It remains unchanged

• It becomes zero

A motor with an output of 100 rpm is connected to a gear system with a 5:1 ratio. What is the output speed?

• 500 rpm

• 20 rpm

• 100 rpm

• 50 rpm

Which of the following best describes the relationship between gear size and rotational speed?

• Larger gears always rotate faster

• Smaller gears always rotate faster

• The driven gear rotates faster if it's smaller than the driver gear

• Gear size has no effect on rotational speed

If a motor produces 0.1 Nm of torque and is connected to a gear system with a 4:1 ratio, what is the output torque?

• 0.025 Nm

• 0.4 Nm

• 4 Nm

• 0.1 Nm

In a car's transmission, why are lower gears used when starting from a stop?

• To increase speed

• To decrease speed

• To increase torque

• To decrease torque

What is the primary purpose of using gears in mechanical systems?

• To always increase speed

• To always decrease speed

• To modify the balance between speed and torque

• To reduce energy consumption

If gear A has 30 teeth and gear B has 90 teeth, how many times will gear A rotate for one full rotation of gear B?

• 1 time

• 2 times

• 3 times

• 1/3 time

Which of the following statements about gears is true?

• Gears can only increase torque

• Gears can only increase speed

• Gears always maintain the same power output

• Gears can either increase torque or speed, but not both simultaneously