Question 629Steam Plants - Assistant Engineer
70% to passWhich of the following statements concerning the operation of a lube oil purifier is correct?
AThey should be operated as slowly as possible to ensure a long service life.
BThey should be operated at maximum design speed and recommended operating capacity.
CThey should not be primed with water when operated as a separator.
DThey should be operated as clarifiers for optimum moisture removal.
AI Explanation
The correct answer is B) They should be operated at maximum design speed and recommended operating capacity. Lube oil purifiers are designed to operate at their maximum design speed and recommended operating capacity in order to achieve optimal separation of contaminants from the oil. Running the purifier at a slower speed or below its recommended capacity would result in less effective separation and a shorter service life for the purifier. Priming the purifier with water when operating as a separator (option C) is also incorrect, as this can disrupt the purification process. Lastly, operating the purifier as a clarifier for moisture removal (option D) is not the primary function of this type of equipment.
Related Questions
Q600:An impulse-reaction turbine is characterized by which of the following arrangeme... Q442:When excessive static boiler pressure has resulted in the initial lift of the va... Q663:If a line shaft bearing begins to overheat, the shaft speed should be reduced. I... Q209:Bi-color water level indicators, connected directly to the boiler drum, operate ... Q251:With an increase in the saturation pressure of a fluid, the value represented by...
Ready to test your knowledge?
Take a Steam Plants - Assistant Engineer Practice ExamOfficial Resources