If the bearings of a piece of machinery are force-fed by a pressure feed lubricating oil system, which statement is true?

Correct Answer: Option C — The lube oil pump draws a suction on the lube oil reservoir/sump and discharges directly to the bearings. The return oil then gravity drains to the lube oil reservoir/sump.

Forced-feed lubrication systems utilize a pump to deliver oil directly from the reservoir to the bearings at a specific design pressure. This ensures positive lubrication for high-load applications. The return oil flows by gravity back to the sump, where it is cooled and filtered before being recirculated by the pump.