单选题Diesel engine lube oil diluted with fuel oil is indicated by()Adecreased viscosityBdecreased pour pointCincreased flash pointDincreased viscosity

单选题
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


参考解析

解析: 暂无解析

相关考题:

单选题A decrease in the flash point of diesel engine lube oil indicates the lube oil has become ().Acontaminated with sludgeBcontaminated with carbonCdiluted with fuel oilDdiluted with water

单选题Black smoke exhausting from a diesel engine indicates()Aproper fuel injectionBwater in the fuelCincomplete combustionDburning of lube oil

单选题Which of the listed problems would be indicated by an accumulation of water in one cylinder, in addition to the crankcase of an idle diesel engine?()AExcessive cylinder linerBwater in the fuel systemCCracked cylinder linerDLeaking lube oil cooler

单选题Telescopic pipes to the piston of a large slow-speed main propulsion diesel engine are designed to prevent ().Aexcessive crankcase pressureBexcessive lube oil temperatureCcontamination of the lube oil by waterDcontamination of the cooling water by lube oil

单选题Which of the listed conditions can cause a diesel engine to use too much lube oil?()ADirty lube oil filterBToo much piston ring wearCHigh lube oil viscosityDLow lube oil temperature

单选题Excessive lubricating oil consumption in a running diesel engine can be caused by ()Aclogged lube oil pipingBexcessive valve-guide clearanceChigh lube oil viscosityDlow lube oil temperature

单选题Fuel oil contamination of an auxiliary diesel engine lube oil can result in()Aan increased flash pointBhigher lube oil pressuresCan increased viscosityDlower lube oil pressures

单选题Before starting a diesel engine that has an engine driven lube oil pump, the engineer should ().Aopen the bypass lineBcut in the lube oil coolerCpressurize the lube oil systemDtop off the expansion tank

单选题Starting a large low-speed propulsion diesel engine on diesel fuel during cold weather conditions, will be made easier by ()Aincreasing the quantity of starting airBincreasing the lube oil pressureCheating the engine fuel supplyDheating the engine coolant

单选题A diesel engine is turned at normal cranking speed and no ignition occursThis could be the result of ()Alow lube oil temperatureBlow starting air temperatureCair bubbles in the fuel oil systemDwater in the starting air system

单选题When fuel oil has seriously contaminated a diesel engine lubricating oil, you should ().Afilter to remove the fuel oilBuse the settler to remove the fuel oilCremove the fuel oil by centrifugingDdrain and then renew the lube oil supply

单选题Diesel engine fuel oil contamination often results in ()Agovernor malfunctionsBfuel injection system malfunctionsChigh cylinder lube oil temperaturesDlow intake temperatures

单选题Which of the following conditions can cause excessive lube oil consumption in a diesel engine?()ALow lube oil temperatureBDirty lube oil strainerCLow lube oil pressureDHigh lube oil temperature

单选题If a diesel engine fails to start,one of the likely causes is ()Alow compression temperatureBlow ambient air pressureChigh lube oil pump pressureDhigh fuel oil booster pump pressure

单选题A sudden decrease in the diesel engine lube oil viscosity could be an indication of()Aloss of additives from the lube oilBcarbon deposits in the lube oilCexcessive centrifugingDexcessive fuel dilution

单选题Which of the following conditions indicates the dilution of diesel engine lube oil by fuel oil?()AWater discharging from the water outlet of the lube oil purifierBFuel oil discharging from the water outlet of the lube oil purifierCLube oil discharging from the water outlet of the lube oil purifierDA change in the lube oil viscosity

单选题Worn diesel engine intake valve guides can result in ()Aincreased engine breathing efficiencyBexcessive valve lashCexcessive lube oil consumptionDlower than normal fuel consumption

单选题If a diesel engine is difficult to start and operates with the engine temperatures lower than normal, you should suspect that the ().Acompression pressures are below normalBlube oil is diluted with fuel oilCcranking speed is too lowDexhaust system is partially restricted

单选题Which of the following conditions could be a cause of excessive fuel dilution of diesel engine lube oil?()ALeaking fuel injectorsBLower than normal compressionCDelayed fuel injectionDAll of the above are correct

单选题If a diesel engine turned over at normal cranking speed but failed to start, the cause could be late fuel injection or ()Aexcessive fuel pressureBhigh lube oil viscosityCinadequate fuel injectionDexcessive starting air pressure

单选题Permitting a diesel engine fuel oil day tank to run dry can cause ()Aoverheated injection pumpsBwater condensation in the cylindersCfuel dilution of the lube oilDair in the fuel system

单选题Diesel engine lube oil can become contaminated as a result()Athe water produced during combustionBthe sulfur in the fuelCunburned fuel oilDall of the above

单选题When fuel enters the crankcase of a diesel engine, it ()Adilutes the lube oil and reduces its viscosityBforms sulfuric acid in the lube oilCcauses pitting and failure of the bearingsDcauses sludge deposits on valve stems

单选题Sludge formation in a diesel engine lube oil system is caused by()Acarbonization of oils from the combustion chambersBemulsions of lube oil and waterCcoagulation of unburned fuel below the piston ringsDall of the above

单选题Lubricating oil viscosity in an operating diesel engine can be reduced by()Aincreasing cooling water flowBincreasing lube oil flowCdilution by fuel oilDadding SAE 70 oil

单选题Excessive piston ring wear in a diesel engine will cause()Ahigh lube oil viscosityBincreased lube oil consumptionClow lube oil temperaturesDhigh firing pressures

单选题Which of the following faults would allow lube oil to enter the cooling system of a diesel engine?()AExcessive valve train lubricationBLeaking standby oil cooler coreCExcessive lube oil pressureDExcessive lube oil in the system