Multiple choice general knowledge science & technology

If 20 teeth gear meshess with 40 teeth gear, which is the weaker gear in bending if both gears are made out of same material

  1. 40 teeth gear

  2. 20 teeth gear

  3. Either one is weaker

  4. both are weaker
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The 20-tooth gear is weaker in bending. With fewer teeth, each tooth is smaller and has less root thickness compared to the 40-tooth gear, assuming the same module and material. Smaller teeth are more susceptible to bending failure under load.

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