In a spur gearing system, the small gear is called the ______.

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Multiple Choice

In a spur gearing system, the small gear is called the ______.

Explanation:
In gear terminology, the smaller wheel in a pair is called the pinion. In spur gear sets, two gears mesh on parallel shafts, and the smaller of the two is typically referred to as the pinion while the larger is the gear (or wheel). The word cog is a general or older term for a gear or its tooth, but it isn’t the precise name for the smaller gear in a pair. Rotor is unrelated here, as it refers to rotating parts in machines like electric motors, not gears. So the small gear in a spur gearing system is best called the pinion.

In gear terminology, the smaller wheel in a pair is called the pinion. In spur gear sets, two gears mesh on parallel shafts, and the smaller of the two is typically referred to as the pinion while the larger is the gear (or wheel). The word cog is a general or older term for a gear or its tooth, but it isn’t the precise name for the smaller gear in a pair. Rotor is unrelated here, as it refers to rotating parts in machines like electric motors, not gears. So the small gear in a spur gearing system is best called the pinion.

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