Elevator Mechanic Practice Exam

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What are the consequences of misaligned joints on a Rack and Pinion?

  1. Broken gear teeth

  2. Car misalignment

  3. Decreased efficiency

  4. Increased noise

The correct answer is: Broken gear teeth

Misaligned joints on a rack and pinion system can indeed lead to broken gear teeth, and this is a critical consequence of misalignment. When the joints are not aligned properly, the load on the gear teeth becomes uneven. As the rack and pinion engage, this uneven loading can cause excessive stress on certain teeth, leading to wear, cracking, or outright breakage. This not only affects the immediate functionality of the system but can also lead to more significant mechanical failures if not addressed promptly. While broken gear teeth is a primary concern, other consequences, such as car misalignment, decreased efficiency, and increased noise, can also occur as a result of misalignment. However, focusing on the direct mechanical failure of broken gear teeth highlights a severe and immediate consequence of such an alignment issue.

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