Question 75Motor Plants - 1st Asst/Chief70% to pass
A decrease in the flash point of diesel engine lube oil indicates the lube oil has become _______________.
AI Explanation
The correct answer is A) diluted with fuel oil.
A decrease in the flash point of diesel engine lube oil indicates that the lube oil has become diluted with fuel oil. This is because fuel oil has a lower flash point compared to the lube oil, so the presence of fuel oil in the lube oil will reduce the overall flash point of the mixture.
The other options are incorrect because: B) contamination with sludge would not necessarily decrease the flash point, C) dilution with water would increase the flash point, and D) contamination with carbon would not directly impact the flash point.
Related Questions
#73 A 'Blotter test' is a test performed on the lube oil of a diesel engine which can determine_______________.#74 If the analysis of used lube oil indicates a high content of iron particles, this could indicate_______________.#76 Which of the following test indicators should be considered the most significant factor in determining as to whether or not a diesel generator's lube oil should be drained and renewed? #77 Crankcase explosions in propulsion diesel engines result from _______________.#78 Which of the following effects will excessively cold lube oil have on the operation of a diesel engine?