单选题Defective air cooler in a diesel engine will lead to ().Asmoky exhaustBstarting failureCoverloadDover speed

单选题
Defective air cooler in a diesel engine will lead to ().
A

smoky exhaust

B

starting failure

C

overload

D

over speed


参考解析

解析: 暂无解析

相关考题:

If an auxiliary diesel engine coolant temperature is higher than normal, but the thermostat is determined not to be defective, you would suspect a/anA.cavitation erosion in the water jacketsB.excess corrosion inhibitor in the coolantC.dirty jacket water coolerD.defective turbocharger

单选题Which of the diesel engine components listed increase air density and helps to improve engine operating efficiency?()AImpellerBCompressorCAfter-coolerDExhaust differ

单选题Lube oil accumulating in the cooling water system of a diesel engine will result in ()Alube cooler failureBpoor heat transferCmechanical lubricator failureDcamshaft seizure

单选题Intake air flow from a diesel engine turbocharger is directly proportional to engine()Aexhaust gas pressureBexhaust gas temperatureCspeedDload

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 atomizer in a diesel engine will lead to().Asmoky exhaustBstarting failureCoverloadDover speed

单选题Defective governor in a diesel engine may lead to ().Asmoky exhaustBstarting failureCignition relayDover speed

单选题What is the effect of heated intake air on a diesel engine? ()AIncreases efficiencyBIncreases engine horsepowerCIncreases engine lifeDReduces engine horsepower

单选题If a crankcase explosion occurs in a diesel engine, you should stop the engine and()Aimmediately open all crankcase relief portsBincrease crankcase exhauster speed to draw cool air into the engineCallow the engine to cool naturallyDincrease crank case scavenge air to remove unburned gases

单选题If cooling water flow through the after-cooler is interrupted,the power output of a turbocharged diesel engine will drop because the ()Aturbocharger will stallBdensity of the air charge will decreaseCscavenge effect will increaseDexhaust pressure will increase

单选题A two-stroke/cycle diesel engine requires less starting air than a four-stroke/cycle diesel engine, of equal displacement, because the two-stroke/cycle diesel engine()Ahas little or no internal frictionBhas a lower effective compression ratioCoperates with scavenge air under a positive pressureDoperates without energy absorbing intake and exhaust strokes

单选题Which condition indicates the air side fouling of an after-cooler on a turbocharged diesel engine?()AAn increased air temperature differential between the cooler inlet and outletBA decrease in the air pressure differential across the coolerCExcessive condensate forming in the air boxDA decrease in the air temperature differential between the cooler inlet and outlet

单选题Which of the following conditions can cause above normal air temperature to develop in the intake manifold of a four-stroke/cycle turbo-charged diesel engine?()AClogged air intake faltersBPiston blow-byCA defective after-coolerDFaulty exhaust valves

单选题A defective injector nozzle in a propulsion diesel engine can cause()Aengine power lossesBsmoking due to unburned fuelChigh exhaust temperature readingsDall of the above

单选题On what do you depend having the air cooler of main engine chemically washed?()Aincreased air pressure differenced before and aft air coolerBreduced exhaust temperature in all cylindersCreduced temperature difference between water inlet and outletDboth A and C

单选题If the jacket water temperature rises rapidly above normal in a diesel engine, you should FIRST ()Aplace standby cooler in operationBreduce engine loadCcheck thermostatic valveDclean sea water strainer

单选题When starting air is admitted, a diesel engine turns over very slowly without firingThe cause may be ()Aan obstruction in an cylinderBwater accumulation in some engine cylindersClow starting air pressureDlow scavenge air pressure

单选题In a naturally aspirated diesel engine, the volume of air intake is directly related to engine ().Acompression ratioBvalve sizeCfuel pressureDcylinder clearance volume

单选题What is the function of the after-cooler installed in the diesel engine air intakes system?()ADecrease the air densityBIncrease the exhaust temperatureCDecrease the lube oil temperatureDIncrease the air density

单选题“This increase in charge air density is accomplished on most modern diesel engine types by use of exhaust gas turbo-charging, in which a turbine wheel driven by exhaust from the engine is rigidly coupled to a centrifugal type air compressor” According to this sentence, we can know that increases density(), drives the compressor directly()Aa modern diesel engine;a turbine wheelBa modem diesel engine;exhaust gasesCa compressor;an exhaust gas turbochargerDa compressor;a turbine wheel

单选题Compared to a naturally aspirated diesel engine, a supercharged diesel engine has()Aa cylinder air charge of higher pressureBincreased pumping lossesCless valve overlapDreduced blow-by

单选题Explosions do occur () caused by the ignition of oil or vapour gaining access from compressors or defective engine starting valves.Ain boiler drumsBin refrigerating plantsCin starting air pipesDin air coolers