单选题Black smoke exhausting from an operating diesel engine is an indication of poor combustion which may be caused by （）A water in the fuelB insufficient fuel for combustionC clogged air intake passagesD burning lubricating oil

题目
单选题
Black smoke exhausting from an operating diesel engine is an indication of poor combustion which may be caused by （）
A

water in the fuel

B

insufficient fuel for combustion

C

clogged air intake passages

D

burning lubricating oil

相似考题

1.A diesel engine experiences a sudden loss in speed, accompanied by black exhaust smoke, with the fuel rack at maximum, and speed remaining below normal .the probable ___.A.engine overloadB.leaky valvesC.stuck or broken piston ringsD.low air injection pressure

2.Engine operating conditions may be indicated by the color of the exhaust smoke Black smoke could indicate .A.an insufficient speed droop settingB.an overloaded engineC.clogged drain holes in the oil control ringsD.complete combustion

3.In a diesel engine, late fuel injection is indicated by black or gray exhaust smoke with ______.A.low firing pressureB.low exhaust temperatureC.mechanical knock in each cylinderD.fuel knock in each cylinder

4.A smoking exhaust from an operating diesel engine could be caused by( ).A.low sulfur content in the fuelB.a loose injector inlet connectionC.late fuel injectionD.high injection pressure

更多“Black smoke exhausting from an operating diesel engine is an”相关问题

  • 第1题：

    What would white exhaust smoke from a diesel engine probably mean ________．

    A.Late fuel injection

    B.Excess combustion air

    C.Dribbling injector tips

    D.Excessive lube oil consumption


    正确答案：A

  • 第2题：

    单选题
    White smoke exhausting from a diesel engine can be caused by （）
    A

    low combustion temperature

    B

    a leaking fuel nozzle check valve

    C

    late fuel injection

    D

    plugged oil-scraper ring hole


    正确答案： A
    解析： 暂无解析

  • 第3题：

    单选题
    The possibility of damage from operating a diesel engine at critical speeds is reduced by the use of（）.
    A

    an isochronous governor

    B

    elastic engine mounts

    C

    a vibration damper

    D

    a cast iron bed plate with good flexible qualities


    正确答案： C
    解析： 暂无解析

  • 第4题：

    单选题
    White smoke exhausting from a diesel engine can be caused by a （）
    A

    high combustion temperature

    B

    high compression pressure

    C

    cracked cylinder liner

    D

    fuel with a high vanadium content


    正确答案： A
    解析： 暂无解析

  • 第5题：

    单选题
    White smoke exhausting from a diesel engine can result from （）
    A

    high exhaust temperature

    B

    high lube oil temperature

    C

    low turbo-charger speed

    D

    low cooling water temperature


    正确答案： A
    解析： 暂无解析

  • 第6题：

    单选题
    Engine operating conditions may be indicated by the color of the exhaust smoke.Black smoke could indicate（）
    A

    an insufficient speed droop setting

    B

    an overloaded engine

    C

    clogged drain holes in the oil control rings

    D

    complete combustion


    正确答案： B
    解析： 暂无解析

  • 第7题：

    单选题
    A smoking exhaust from an operating diesel engine could be caused by （）
    A

    low sulfur content in the fuel

    B

    a loose injector inlet connection

    C

    late fuel injection

    D

    high injection pressure


    正确答案： A
    解析： 暂无解析

  • 第8题：

    单选题
    The most practical way of detecting an overload in one cylinder of an operating large, low-speed ,main propulsion diesel engine is to （）
    A

    check the cylinder exhausts for black smoke

    B

    listen for combustion knock in that cylinder

    C

    isolate each cylinder and inspect the injector

    D

    check the cylinder exhaust temperature frequently


    正确答案： C
    解析： 暂无解析

  • 第9题：

    单选题
    A loud clicking noise from the valve compartment of an operating diesel engine would indicate（）
    A

    worn valve seats

    B

    worn main bearing

    C

    excessive valve clearance

    D

    weak rocker arm springs


    正确答案： D
    解析： 暂无解析

  • 第10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 liner

    B

    clogged intake ports

    C

    broken piston rings

    D

    a faulty head gasket


    正确答案： B
    解析： 暂无解析

  • 第11题：

    单选题
    If you observe smoke coming from the turbocharger of an auxiliary diesel engine, you should（）
    A

    check the air filter for obstruction

    B

    check for an exhaust leak

    C

    check the exhaust temperature

    D

    secure the engine


    正确答案： D
    解析： 暂无解析

  • 第12题：

    单选题
    An indication of an overloaded main propulsion diesel engine is （）
    A

    white smoke in the exhaust

    B

    high exhaust gas pyrometer readings

    C

    sparks in the exhaust

    D

    blue smoke in the exhaust


    正确答案： A
    解析： 暂无解析

  • 第13题：

    单选题
    Black smoke exhausting from a diesel engine indicates（）
    A

    proper fuel injection

    B

    water in the fuel

    C

    incomplete combustion

    D

    burning of lube oil


    正确答案： A
    解析： 暂无解析

  • 第14题：

    单选题
    A diesel engine experiences a sudden loss in speed, accompanied by black exhaust smoke, with the fuel rack at maximum, and speed remaining below normal the probable（）
    A

    engine overload

    B

    leaky valves

    C

    stuck or broken piston rings

    D

    low air injection pressure


    正确答案： A
    解析： 暂无解析

  • 第15题：

    单选题
    White smoke exhausting from an operating diesel engine may indicate （）.
    A

    a cracked liner

    B

    burning lube oil

    C

    an overloaded engine

    D

    insufficient combustion air


    正确答案： D
    解析： 暂无解析

  • 第16题：

    单选题
    White smoke issuing from the exhaust of an auxiliary diesel engine valve opening （）
    A

    the engine is overloaded

    B

    the engine is cold

    C

    there is too much lube oil in the cylinders

    D

    the turbocharger is fouled


    正确答案： D
    解析： 暂无解析

  • 第17题：

    单选题
    A practical way of checking for excessive fuel injection in one cylinder of an operating diesel engine is to （）
    A

    feel the high pressure fuel line

    B

    check the cylinder exhausts for white smoke frequently

    C

    check the cylinder exhaust temperature

    D

    isolate each cylinder and inspect the injector


    正确答案： A
    解析： 暂无解析

  • 第18题：

    单选题
    Black smoke exhausting from an operating diesel engine can be caused by （）
    A

    fuel dribbling from leaking fuel injectors

    B

    burning fuel with a high carbon content

    C

    burning fuel with a high vanadium content

    D

    burning fuel with a lower sulphur content


    正确答案： D
    解析： 暂无解析

  • 第19题：

    单选题
    High exhaust temperature and black smoke exhausting from an auxiliary diesel engine can be caused by （）.
    A

    engine overload

    B

    low combustion temperature

    C

    plugged fuel nozzle holes

    D

    excessive compression pressure


    正确答案： C
    解析： 暂无解析

  • 第20题：

    单选题
    In a diesel engine, late fuel injection is indicated by black or gray exhaust smoke with（）
    A

    low firing pressure

    B

    low exhaust temperature

    C

    mechanical knock in each cylinder

    D

    fuel knock in each cylinder


    正确答案： A
    解析： 暂无解析

  • 第21题：

    单选题
    What causes diesel fuel to be ignited in the cylinder of an operating diesel engine?（）
    A

    Spark plug

    B

    Heat of compression

    C

    Carburetor

    D

    Glow plug


    正确答案： B
    解析： 暂无解析

  • 第22题：

    单选题
    The purpose of compressing the air within the cylinder of a diesel engine is to （）
    A

    produce the heat for ignition

    B

    decrease injection lag

    C

    increase ignition delay

    D

    aid in exhausting burnt gases


    正确答案： C
    解析： 暂无解析

  • 第23题：

    单选题
    A four-stroke cycle, turbocharged, 1000 horsepower diesel engine has been operating under loadThe load suddenly increases, causing excessive black exhaust smoke, and a rapid rise in the lube oil temperatureIn response to this condition, you should:（）
    A

    reduce load

    B

    check your exhaust

    C

    adjust cooling water temperature

    D

    increase lube oil flow


    正确答案： A
    解析： 暂无解析

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