Gear ratio is determined by which factor?

Gear ratio is determined by which factor?

• A. The color of the gear
• B. The lubrication level
• C. The shape of the gear teeth
• D. The number of teeth on each gear

Answer: (D)

Gear ratio is set by how many teeth are on each gear that meshes together. The ratio tells you how far the driven gear turns for one full turn of the driving gear. If the driven gear has more teeth than the driving gear, the output is slower and torque is higher. In a simple two-gear setup, the ratio equals the number of teeth on the driven gear divided by the number of teeth on the driving gear. With more gears, you multiply the individual stage ratios. The shape of the teeth matters for smooth meshing, but it doesn’t change the ratio; lubrication affects efficiency and wear, not the ratio; color has no mechanical meaning. So the number of teeth on each gear is what determines the gear ratio.

Gear ratio is set by how many teeth are on each gear that meshes together. The ratio tells you how far the driven gear turns for one full turn of the driving gear. If the driven gear has more teeth than the driving gear, the output is slower and torque is higher. In a simple two-gear setup, the ratio equals the number of teeth on the driven gear divided by the number of teeth on the driving gear. With more gears, you multiply the individual stage ratios. The shape of the teeth matters for smooth meshing, but it doesn’t change the ratio; lubrication affects efficiency and wear, not the ratio; color has no mechanical meaning. So the number of teeth on each gear is what determines the gear ratio.