Question 137General Subjects - 1st Asst/Chief

The correct answer is A. In a gravity feed lubricating oil system, the lube oil pump draws oil from the lube oil reservoir/sump and discharges it to the lube oil gravity tank. The oil then gravity feeds the bearings, and the return oil drains back to the lube oil reservoir/sump. This allows the system to rely on gravity to circulate the oil through the bearings without requiring the pump to be constantly running. The other options are incorrect because they do not accurately describe the flow of oil in a gravity feed system. Option B has the pump discharging directly to the bearings instead of the gravity tank, option C has the return oil draining to the reservoir instead of the gravity tank, and option D has the return oil draining to the gravity tank instead of the reservoir.