更多"Lube oil filters remove contaminant"的相关试题:
[单项选择]The lube oil cooler is located after the lube oil filter in order for ()
A. the filter to operate more efficiently
B. the lube oil cooler to be bypassed
C. positive lube oil pump suction to be assured
D. galvanic action in the cooler to be minimized
[单项选择]A lube oil filter can be used to remove most contaminants from lube oilA contaminant which will remain in the lube oil after filtering is ().
A. acid
B. fuel oil
C. sediment
D. water
[单项选择]Diesel engine lube oil diluted with fuel oil is indicated by()
A. decreased viscosity
B. decreased pour point
C. increased flash point
D. increased viscosity
[单项选择]Waste oil from the lube oil sumps of machinery may NOT be ().
A. drained into the vessels bilges
B. reclaimed for other uses
C. held in a slop tank
D. purified and then reused
[单项选择]
When fuel oil is accidentally missed with lube oil which of the following processes can be used to separate them?()
Ⅰ.filtering
Ⅱ.settling
A. Ⅰ only
B. Ⅱ only
C. either Ⅰ or Ⅱ
D. neither Ⅰ or Ⅱ
[单项选择]A lube oil sample taken from the main engine lube oil system has dark yellow opaque color.This is the result of ()
A. water contamination
B. mixing oils of two widely different viscosities
C. overheating
D. aeration
[单项选择]Excessive lube oil consumption can result from worn or broken()
A. piston rings
B. valve guides
C. valve seals
D. all of the above
[单项选择]To determine if the lube oil filter elements need changing, ().
A. open the filter and inspect the elements
B. check the lube oil pump discharge pressure
C. check the lube oil header pressure
D. check the pressure drop across the filter
[单项选择]When separating the lube oil without additive, it is usually cleaned with hot water; the aim is to remove () from it.
A. acid
B. sludge
C. mechanical impurity
D. salinity
[单项选择]Excessive lube oil consumption by a reciprocating air compressor can be caused by ().
A. using a slightly dirty air filter
B. using oil having an excessive viscosity
C. intercooler or after-cooler leaks
D. carrying the oil level higher than normal
[单项选择]If the chemical analysis of a lube oil sample taken from a diesel engine indicates an increased neutralization number, the ().
A. acidity has increased
B. viscosity has decreased
C. demulsibility has improved
D. foaming is guaranteed to occur
[单项选择]If the analysis of used lube oil indicates a high content of iron particles, this could indicate()
A. corrosive deterioration of a bearing
B. inadequate air filtration
C. excessive ring and liner wear
D. excessive cooling of lubricating oil
[单项选择]The quality of the fuel oil and lube oil (), Im afraid.
A. has much to do with the operation of the engine and its life
B. have much to do with the operation of the engine and its life
C. has much doing with the operation of the engine and its life
D. have much doing with the operation of the engine and its life
[单项选择]Diesel engine lube oil can become contaminated as a result()
A. the water produced during combustion
B. the sulfur in the fuel
C. unburned fuel oil
D. all of the above
[单项选择]Which of the following characteristic of lube oil helps to reduce the amount of deposits in the piston ring belt during the combustion process in a diesel engine?()
A. Low viscosity index
B. Low carbon forming tendencies
C. High film strength
D. High non-corrosive qualities
[单项选择]Lube oil accumulating in the cooling water system of a diesel engine will result in ()
A. lube cooler failure
B. poor heat transfer
C. mechanical lubricator failure
D. camshaft seizure
[单项选择]High lube oil temperatures developing in a diesel engine can result from()
A. high oil pressure
B. excessive bearing end play
C. plugged oil control rings
D. engine overload
[单项选择]For a main diesel engine the lube oil in the bearings is drawn from (), usually located in the bedplate.
A. a gravity tank
B. a sump
C. a vessel
D. a bottle
[单项选择]If a used lube oil analysis indicates excessive fuel dilution, the lube oil should be ()
A. changed
B. centrifuged
C. filtered
D. settled