网友您好, 请在下方输入框内输入要搜索的题目:

题目内容 (请给出正确答案)
单选题
If a crankcase explosion has occurred in a diesel engine, and the crankcase remains intact, which of following precautions should be observed?()
A

The cylinder indicator cocks should be opened

B

The sump lube oil scavenge pump should be secured immediately

C

The explosion relief valves should be manually opened

D

The crankcase should remain unopened until the engine has cooled


参考答案

参考解析
解析: 暂无解析
更多 “单选题If a crankcase explosion has occurred in a diesel engine, and the crankcase remains intact, which of following precautions should be observed?()A The cylinder indicator cocks should be openedB The sump lube oil scavenge pump should be secured immediatelyC The explosion relief valves should be manually openedD The crankcase should remain unopened until the engine has cooled” 相关考题
考题 A sudden power loss from a turbocharged and after-cooled diesel engine is an indication of a/anA.turbocharger malfunction or failureB.crankcase exhauster overloadC.overload on the intercoolerD.obstruction in the engine cylinders

考题 The gigantic explosion that occurred a hundred years agoA. has remained a puzzle B. lacks sufficient evidence C. is a university professor D. was generated by the explosion E. will kill many animals F. are attacked by aliens

考题 单选题Water accumulating in the crankcase of a diesel engine could indicate()A a cracked cylinder linerB excessive water in the fuelC a leaking intercoolerD excessive moisture in the scavenge air

考题 单选题With regards to a diesel engine crankcase explosion, the most violent is the() (1) primary explosion (2) secondary explosionA (1) onlyB (2) onlyC both (1) and (2)D neither (1) or (2)

考题 单选题Leaking oil seals on a diesel engine turbocharger can cause()A the engine to run after the fuel has been securedB the engine to over-speedC a fireD all of the above

考题 单选题Large crosshead type engine generally has two lubrication systems, a function performed only by crankcase oil system is()A lubricatingB coolingC cleaningD neutralizing

考题 单选题Regarding a Diesel engine crankcase, the general arrangement and installation should preclude the possibility of ()A free entry of air to the crankcaseB water entering the crankcase while engine wash-downs are being performedC excessive oil leakage during periods of increased blow-byD sub-cooling internal components

考题 单选题The main purpose of inspection for a running diesel engine is()A testing for the mechanical load and the thermal loadB inspecting thermal and mechanical condition of the engineC inspecting each system and exhaust temperatureD testing for compress pressure and explosion pressure

考题 单选题In a diesel engine, blow-by is a result of combustion gases leaking into the crankcase past the ()A wrist pin bushingsB compression ringsC cylinder liner sealsD cylinder liner sealing ring

考题 单选题Diesel engine ‘blow-by’ into the crankcase is caused by excessive ring()A back clearanceB side clearanceC gap clearanceD taper clearance

考题 单选题In a diesel engine, blow-by()A increase exhaust back pressureB causes excessive crankcase pressureC can only be detected by a compression checkD decreases fuel consumption

考题 单选题A diesel engine is similar to a gasoline engine except that the former has no ().A cross-headB cylinderC connecting rodD spark plug

考题 单选题The cooling water of the diesel engine should be treated, because it has()A alkale scenceB acidityC salinityD impurity

考题 单选题If water is found in the crankcase of a diesel engine, the cause may be due to()A a cracked cylinder headB a leaky cylinder head gasketC a cracked cylinder linerD any of the above

考题 单选题If a crankcase explosion occurs in a diesel engine, you should stop the engine and()A immediately open all crankcase relief portsB increase crankcase exhauster speed to draw cool air into the engineC allow the engine to cool naturallyD increase crank case scavenge air to remove unburned gases

考题 单选题If a diesel engine has been stopped because of piston seizure due to severe overheating, the crankcase()A inspection covers should not be opened until the engine has cooledB ventilation system should be continued in operation for one hour for coolingC scavenge pump should be immediately secured to prevent loss of lube oilD explosion covers should be opened slightly to provide extra ventilation

考题 单选题A diesel engine crankcase ventilation system ()A prevents spark generationB removes combustible gasesC determines the level of combustible gasesD provides inert gas generation in crankcase

考题 单选题A diesel engines crankcase oil level is found to be too high√ You should suspect that ().A the engine was over filledB there might be a fuel leakC there might be a water leakD all of the above

考题 单选题The ship has a diesel engine()a supercharger.A withB ofC onD over

考题 单选题How dose water enter the crankcase of a diesel engine?()A Through the crankcase exhausterB As water vapor contained in blow-byC Demulsifying lube oil passing through the main bearingsD Condensation from vapor formed in the expansion tank

考题 单选题If you notice smoke coming fro the crankcase exhaust fan outlet of an operating diesel engine, you would suspect()A a cracked cylinder linerB clogged intake portsC broken piston ringsD a faulty head gasket

考题 单选题In a normally operating diesel engine, the main cause of lubricating oil contamination in the crankcase is a result of the ().A metal particles loosened by wearB air when no air cleaners are usedC condensation of water vaporsD breakdown of the lubricating oil by dilution

考题 单选题When fuel enters the crankcase of a diesel engine, it ()A dilutes the lube oil and reduces its viscosityB forms sulfuric acid in the lube oilC causes pitting and failure of the bearingsD causes sludge deposits on valve stems

考题 单选题For a given size engine, the two-stroke/cycle diesel engine will deliver more power than a four-stroke/cycle diesel engine because ().A it has a longer power strokeB more air gets into the cylinder each strokeC it develops twice as many power strokes at the same speedD higher combustion pressure is developed

考题 单选题If a crankcase explosion occurs in a diesel engine, which of the listed actions should be taken?()A Open the crankcase immediately to check for damageB Apply fire fighting water through the crankcase breatherC Allow the engine to cool before opening the crankcaseD Assume that there is no damage to the crankshaft

考题 单选题Compared to a naturally aspirated diesel engine, a supercharged diesel engine has()A a cylinder air charge of higher pressureB increased pumping lossesC less valve overlapD reduced blow-by