Red Seal Industrial Mechanic (Millwright) Practice Exam

What type of maintenance could be necessary for motors requiring starters?

1. Regular inspection of wiring and connections.

2. Replacement of starters every year.

3. Adjustment of motor speed to optimize performance.

4. Cleaning the housing exterior only.

The correct answer is: Regular inspection of wiring and connections.

The necessity for regular inspection of wiring and connections in motors requiring starters is crucial for ensuring the reliability and safety of the motor system. Proper functioning of the starter is directly related to the condition of the wiring and connections; any deterioration or wear can lead to poor performance, increased energy consumption, or even catastrophic failures. Regular inspections help identify any issues such as loose connections, frayed wires, or corrosion before they escalate into more significant problems, thus maintaining operational efficiency and extending the lifespan of the motor and associated components. In contrast, while replacing starters could be a part of maintenance, doing so every year is generally unnecessary unless there's a known defect or frequent failure. Adjusting motor speed to optimize performance may be relevant in specific applications but doesn't relate directly to routine maintenance of the starters themselves. Cleaning the housing exterior is only a superficial maintenance task and does not address the functional integrity of the electrical components that starters rely on.