___ greasing an electric motor increases heat in the motor.

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Multiple Choice

___ greasing an electric motor increases heat in the motor.

Explanation:
Excess lubrication changes how heat is managed inside the motor. When there is too much grease, it forms a thick layer that traps heat and increases viscous drag as the bearings rotate. This slows heat transfer to the housing and to the surrounding air, so the motor runs hotter. A proper amount reduces friction without blocking cooling, keeping temperatures down. While under-greasing also raises temperature due to increased wear, the statement points to the heat issue caused by too much lubricant, which is described as over-greasing.

Excess lubrication changes how heat is managed inside the motor. When there is too much grease, it forms a thick layer that traps heat and increases viscous drag as the bearings rotate. This slows heat transfer to the housing and to the surrounding air, so the motor runs hotter. A proper amount reduces friction without blocking cooling, keeping temperatures down. While under-greasing also raises temperature due to increased wear, the statement points to the heat issue caused by too much lubricant, which is described as over-greasing.

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