单选题A diesel engine may be hard to start if the （）Aair intake is restrictedBengine is cranked too fastCvibration dampener is faultyDexhaust back pressure is low
单选题
A diesel engine may be hard to start if the （）
A
air intake is restricted
B
engine is cranked too fast
C
vibration dampener is faulty
D
exhaust back pressure is low
参考解析
解析：
暂无解析
相关考题：
A bypass line provided around a waste heat auxiliary boiler in a diesel engine exhaust system, may be used to avoid boiler ______.A.corrosion at low engine loadsB.erosion at high engine loadsC.overload at high engine loadsD.scaling at all exhaust temperatures
单选题If a diesel engine turned over freely but failed to start, the cause could be （）Awater in the fuelBcold lube oilCexcessive starting air pressureDexcessive fuel pressure
单选题Diesel oil may be used to cool （） of a diesel engine.AcylindersBexhaust valvesCpistonsDfuel valves
单选题Excessive vibration in an operating diesel generator may be caused by （）Aelectrical overloadBsurging at governed RPMCloose engine mounting boltsDcoolant leaking into the cylinder
单选题If the operating element of a thermostatic valve installed in a diesel engine cooling system malfunctions, it may result in （）Aa low level in the engine expansion tankBexcessively high coolant pressureCimproper temperaturesDmalfunctioning of the jacket water heater
单选题A diesel engine may fail to start due to （）Alow air charge temperatureBhigh cranking speedCexcessive fuel dilution of lube oilDhigh compression pressure
单选题Low compression of diesel engine may result from （）Aa worn cylinderBbroken piston ringsCany of A and BDnone of the above
单选题A diesel engine fails to start because of water in the fuelIn order to start the engine, you should （）?Aturn engine with jacking gearBdrain filters and strainers and bleed off water at each injection pumpCuse ether to start the engine with blow-down valves openDblow through the cylinders and fuel lines with a drying agent
单选题A diesel engine fails to start due to excessive water in the fuelBefore the engine can be started, the water should be removed from the（）Afuel linesBlube oil filterCcrank case pumpDrocker arm reservoir
单选题Burning fuel with a high sulfur content in a diesel engine will （）Aincrease thermal efficiencyBcause clogging of the fuel systemCincrease the ability of the engine to start in cold weatherDproduce corrosion in the cylinder and exhaust system at low loads
单选题Diesel engine air start valve timing is controlled by（）Aengine operating speedBan air manifoldCa hydraulic distributorDindividual cams and valve gear
单选题When attempting to start a main propulsion diesel engine, the engine, the engine turns at the proper speed but will not startYou should check the（）Astarting air pressureBscavenge air pressureCover-speed tripDbanjo oiler line
单选题Diesel engine air start system check valves are opened by （）Aan air start camBcylinder compression pressureCstarting air pressureDvalve springs
单选题Defective governor in a diesel engine may lead to （）.Asmoky exhaustBstarting failureCignition relayDover speed
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The following preparations are essential for any （） of marine diesel engine before it may be started.AdoingBmakeCturnDoperating
单选题A diesel engine could fail to start because of （）Aincorrect injection timingBlow exhaust back pressureCfloating exhaust valvesDexcessive cranking speed
单选题As for a diesel engine, lack of combustion air may be due to （）.Afouling turbineBfuel pump faultsClubrication failureDexcessive cooling
单选题With Variable Injection Timing the start of injection may be （）as the engine load is reduced.AadvancedBretardedCkept constantDnone of the above
单选题A restricted air intake to a diesel engine may result in the engine （）.Afailing to reach rated speedBknocking under maximum loadChunting or surging under light loadDoverspeeding and running away
单选题Following an overhaul of a crosshead type diesel engine, the engine is jacked over with the turning gear as part of the pre-start procedure, which of the listed pre-start procedures should be carried out?（）AEnsure proper cylinder lube oil flowBOpen all air space drain cocksCOpen all indicator valvesDall of the above