Question 381Steam Plants - 1st Asst/Chief
70% to passNo lube oil appearing in the sight glass (bull’s-eye) of a gravity type system is a positive indication of _______________.
Afailure of all lube oil pumps
Bno oil is overflowing the gravity tank
Cno oil flowing to the bearings
Dthe gravity tanks being empty
AI Explanation
The correct answer is B) no oil is overflowing the gravity tank. In a gravity type lubrication system, the absence of oil in the sight glass (bull's-eye) indicates that the oil is not overflowing the gravity tank, which is a positive sign. This means the oil level in the gravity tank is low enough to not be visible in the sight glass, but still providing sufficient lubrication to the bearings. The other options are incorrect because they suggest issues like pump failure or no oil flow, which are not necessarily indicated by the lack of oil in the sight glass alone.
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