Oilers/Plant Tenders (HHC) Civil Service Practice Exam

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If an electric motor is regularly overlubricated, what is a possible consequence?

Increased energy efficiency
It may cause oil-soaked insulation
It will improve performance
It may reduce wear

The correct answer is: It may cause oil-soaked insulation

Regularly overlubricating an electric motor can lead to oil-soaked insulation, which is a significant consequence. When too much lubricant is applied, it can accumulate and seep into the insulation of the motor windings. This oil can degrade the insulation materials, diminishing their effectiveness and potentially leading to electrical failures, short circuits, or even fires. Proper lubrication is essential for reducing friction and wear; however, it must be balanced, as excess lubrication can have detrimental effects. This understanding highlights the importance of adherence to manufacturer specifications regarding lubrication, ensuring that the motor operates efficiently while maintaining the integrity of its components.