The center distance of a pair of meshing gears is half the sum of their pitch diameters, which can be expressed as $C = \frac{m}{2}(z_p + z_g)$. The gear ratio is the ratio of the number of teeth of the driven gear to the driving pinion for a speed reduction.
A pair of spur gears with module 5 mm and a center distance of 450 mm is used for a speed reduction of 5:1. The number of teeth on pinion is - (5) Question not attempted
Asked in Assistant Eng. (Mechanical) Competitive Examination, 2023 · Topic: Mechanics (Rotational Dynamics and Moment of Inertia)
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