Question 135General Subjects - 1st Asst/Chief

The correct answer is C) The higher the oil level, the longer the residence time, and the cooler the oil will be as delivered by the pump. In a forced-feed lubrication system, the oil level in the reservoir/sump determines the residence time of the oil. The higher the oil level, the longer the oil will remain in the reservoir before being drawn out by the pump. This increased residence time allows the oil to cool down, as it has more time to dissipate heat before being circulated through the system. Conversely, a lower oil level would result in a shorter residence time, causing the oil to be delivered to the pump at a higher temperature. The other options are incorrect because they state the opposite relationship between oil level, residence time, and oil temperature. Increasing the oil level would not shorten the residence time or result in hotter oil being delivered by the pump.