Question 601Steam Plants - Assistant Engineer
70% to passWhen the flow of oil admitted to a disk-type centrifugal purifier is in excess of its designed capacity, which of the following conditions will usually occur?
AThe oil will be discharged through the heavy phase discharge port.
BThe speed of the centrifuge will increase.
CAll water will be retained by the purified oil being discharged.
DOil will be present in the water sealing line to the bowl.
AI Explanation
The correct answer is A) The oil will be discharged through the heavy phase discharge port. When the flow of oil admitted to a disk-type centrifugal purifier exceeds its designed capacity, the increased flow will cause the oil and water layers within the centrifuge to become unbalanced. This will result in the heavier water layer being pushed out through the heavy phase discharge port, along with some of the oil. The other options are incorrect because: B) The speed of the centrifuge will not increase, C) All water will not be retained, and D) Oil may be present in the water sealing line, but this is not the primary effect of exceeding the purifier's designed capacity.
Related Questions
Q167:Why does air entry into the main condenser reduce the efficiency of the steam cy... Q491:The flash point of a residual fuel oil should be used to determine the highest ... Q348:Which of the following is the advantage of operating a typical closed feed water... Q677:Tenon peening is a technique employed by turbine manufacturers to ______________... Q331:Compared to the return flow oil burner system, an internally mixed steam atomize...
Ready to test your knowledge?
Take a Steam Plants - Assistant Engineer Practice ExamOfficial Resources