单选题The construction of the main propulsion engine lube oil sump should （）Ahave no plating joints of 90Bretain the lube oil as long as possible before it recirculates through the systemCprovided drain/return lines that are no greater than 24 inches from the pump suctionDbe provided with only a perfectly horizontal bottom
单选题
The construction of the main propulsion engine lube oil sump should （）
A
have no plating joints of 90
B
retain the lube oil as long as possible before it recirculates through the system
C
provided drain/return lines that are no greater than 24 inches from the pump suction
D
be provided with only a perfectly horizontal bottom
参考解析
解析：
暂无解析
相关考题：
On a medium-speed main propulsion diesel engine, the crank-pin or crank journalbearings receive lubricating oil from( ).A.a spindle lubricatorB.an oil jetC.internal splashingD.drilled passages in the crankshaft
Which of the following is operated from the main engine room console on an automated vessel?A.Fire pump and lube oil pumpB.Lube oil pump and distilling plantC.Distilling plant and shaft alley doorD.Shaft alley door and fixed CO2 release
Loss of lubricating oil pressure to the main propulsion diesel engine will actuate a/an _____.A.over-speed tripB.audible/visual alarmC.the ships/boats general alarmD.reserve oil storage tank
Lubrication for the main reduction gears used with diesel engines is usually supplied byA.oil from the main engine sumpB.an independent lube oil systemC.the stern bearing head tankD.the stem bearing sump tank
In an auxiliary diesel engine bypass type lubricating oil system, the main lube oil pump forces_______ .A.all of the oil used by the engine through a filterB.some of the oil used by the engine through a filterC.some of the oil used by the engine through a centrifugeD.all of the oil used by the engine through a centrifuge
A dirty diesel engine oil filter element can best be detected by ______.A.visual inspection of the elementsB.the pressure drop across the filterC.high lube oil sump temperatureD.decrease in oil viscosity from the filter
单选题Worn main bearings in a diesel engine can result in （）Adecreased compression pressureBincreased lube oil pressureClower lube oil temperatureDexcessive leakage past the piston rings
单选题A dirty diesel engine oil filter element can best be detected by （）.Avisual inspection of the elementsBthe pressure drop across the filterChigh lube oil sump temperatureDdecrease in oil viscosity from the filter
单选题Proper operation of the main engine reduction gear set requires the operation to monitor （）Athe sump oil levelBoil flow sight glassesCbearing temperaturesDall of the above
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The purpose of an oil mist detector in a main propulsion diesel engine is to warn of （）Aexcessive mist density in the crankcasesBexcessively high crankcase vacuumCexcessively high bearing temperatureDexcessive carbon buildup in the lube oil
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A lube oil sample taken from the main engine lube oil system has dark yellow opaque color.This is the result of （）Awater contaminationBmixing oils of two widely different viscositiesCoverheatingDaeration
单选题Loss of lubricating oil pressure to the main propulsion diesel engine will actuate a/an （）.Aoverspeed tripBaudible/visual alarmCthe ships/boats general alarmDreserve oil storage tank
单选题On a medium-speed main propulsion diesel engine, the crank-pin or crank journal bearings receive lubricating oil from （）.Aa spindle lubricatorBan oil jetCinternal splashingDdrilled passages in the crankshaft
单选题Prior to starting, the purpose of turning over a main propulsion diesel engine with the cylinder test cocks open, is to （）Atest the starting systemBremove condensation from the cylindersCcheck the compressionDcheck for proper lube oil pressure
单选题For a main diesel engine the lube oil in the bearings is drawn from （）, usually located in the bedplate.Aa gravity tankBa sumpCa vesselDa bottle
单选题Which of the following operating procedures should be carried out immediately after any diesel engine is started?（）ATake all exhaust temperature readingBCheck the sump oil levelCVerify proper lube oil pressureDAll of the above
单选题Which of the following statements concerning the lubrication of diesel propulsion engines used in vessels over 300 gross tons is most accurate?（）ALubrication systems using engine driven lube oil pumps do not require any additional independent arrangement when such arrangements have been proven reliableBThe use of engine driven pre-lube pumps is permitted on vessels with propulsion systems developing less than 500 shaft horsepowerCWhen forced lubrication is used for propulsion engines, one independently driven stand-by pumps is to be provided in addition to the necessary pumps for normal operationDLubrication systems where two oil coolers are fitted require a minimum of two temperature control devices which may be actuated by similar sensors
单选题Main propulsion engine lube oil sumps should be constructed （）Aso as to never be integral lubeBwith a sloped bottomConly of nonferrous, noncorrosive metalsDwith drain/return lines terminating just above or at the designed normal level
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The construction of the main propulsion engine lube oil sump should （）Ahave no plating joints of 90Bretain the lube oil as long as possible before it recirculates through the systemCprovided drain/return lines that are no greater than 24 inches from the pump suctionDbe provided with only a perfectly horizontal bottom
单选题The main propulsion diesel continues running after you try to shut downYoushould now attempt to（）Astop the combustion air supplyBengage the jacking gearCsecure the lube oil pumpDshut off the fuel at the day tank
单选题Most large, low-speed, main propulsion diesel engines use duplex lube oil strainer to （）Adecrease the time required between cleaningsBremoves all large and small foreign objectsCensure a positive flow of oil at all timesDensure that all lube oil has been treated twice