Elevator Mechanic Practice Exam

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Prepare for the Elevator Mechanic Exam with comprehensive quizzes, flashcards, and multiple-choice questions. Each question includes hints and detailed explanations to ensure you are ready for your exam!

Practice this question and more.

While testing for a locked rotor condition, what could happen if the testing is carried on for too long?

Damage to the control panel
Damage to the power supply
Damage to the stator or rotor
Overheating of the wires

The correct answer is: Damage to the stator or rotor

When testing for a locked rotor condition, extending the test duration can indeed lead to damage in the components of the motor, specifically to the stator or rotor. A locked rotor situation occurs when the rotor of the motor is unable to turn, which means that it is drawing a significant amount of current without the corresponding movement. This sustained high current can cause excessive heat to build up in the stator windings and the rotor itself. The stator’s coils can overheat, resulting in insulation breakdown, while the rotor can also suffer from thermal stress, leading to potential deformation or failure. In the worst-case scenario, this can completely ruin the motor, necessitating costly repairs or replacements. It is therefore crucial for technicians to limit the duration of testing under these conditions to prevent damage.