In a gearbox, shafts must be attached using a ______ device to other shafts.

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Multiple Choice

In a gearbox, shafts must be attached using a ______ device to other shafts.

Explanation:
The main idea is transmitting torque between two rotating shafts. A coupling is the device designed for that job: it physically connects two shafts so power can flow from one to the other while allowing for some alignment tolerance and reducing stress on components. Bearings merely support shafts and keep them rotating smoothly; seals prevent leakage and don’t join shafts; splines are interlocking grooves that can transmit torque between a shaft and a mating part, but a coupling is the standard component used to join two separate shafts in a drive train.

The main idea is transmitting torque between two rotating shafts. A coupling is the device designed for that job: it physically connects two shafts so power can flow from one to the other while allowing for some alignment tolerance and reducing stress on components. Bearings merely support shafts and keep them rotating smoothly; seals prevent leakage and don’t join shafts; splines are interlocking grooves that can transmit torque between a shaft and a mating part, but a coupling is the standard component used to join two separate shafts in a drive train.

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