单选题Black smoke exhausting from a diesel engine indicates（）A proper fuel injectionB water in the fuelC incomplete combustionD burning of lube oil

题目
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

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.An indication of an overloaded main propulsion diesel engine is( ).A.white smoke in the exhaustB.high exhaust gas pyrometer readingsC.sparks in the exhaustD.blue smoke in the exhaust

参考答案和解析
正确答案： A
解析： 暂无解析
更多“Black smoke exhausting from a diesel engine indicates（）”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
    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3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4题：

    单选题
    Which of the following would cause a diesel to have black smoke?（）
    A

    leaky injector

    B

    water in the gas

    C

    too heavy oil

    D

    water in the oil


    正确答案： D
    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
    Which of the following conditions indicates the dilution of diesel engine lube oil by fuel oil?（）
    A

    Water discharging from the water outlet of the lube oil purifier

    B

    Fuel oil discharging from the water outlet of the lube oil purifier

    C

    Lube oil discharging from the water outlet of the lube oil purifier

    D

    A change in the lube oil viscosity


    正确答案： C
    解析： 暂无解析

  • 第8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9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10题：

    单选题
    If the chemical analysis of a lube oil sample taken from a diesel engine indicates an increased neutralization number, the （）.
    A

    acidity has increased

    B

    viscosity has decreased

    C

    demulsibility has improved

    D

    foaming is guaranteed to occur


    正确答案： D
    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
    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14题：

    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


    正确答案： B
    解析： 暂无解析

  • 第15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16题：

    单选题
    Air in the fuel lines of a diesel engine can cause （）
    A

    ignition failure

    B

    oxygen corrosion of the fuel lines

    C

    the pistons to seize

    D

    blue smoke


    正确答案： B
    解析： 暂无解析

  • 第17题：

    单选题
    A diesel engine emits blue exhaust smoke as a result of（）
    A

    cold intake air

    B

    excessive compression pressure

    C

    excessive cylinder lubrication

    D

    a light load


    正确答案： B
    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
    Why will a turbocharger diesel engine produce black smoke if excessive additional load is applied too quickly?（）
    A

    Exhaust energy would draw excess air

    B

    The inertia of the turbocharger rotor causes a time lag which delays the turbocharger speed increase

    C

    Exhaust gas pumping losses are increased due to turbine windage

    D

    Exhaust gas back pressure falls slightly due to increased nozzle action


    正确答案： B
    解析： 暂无解析

  • 第21题：

    单选题
    A diesel engine cooling water system with a pH factor of 30 indicates a condition of （）.
    A

    slight acidity

    B

    slight alkalinity

    C

    excessive alkalinity

    D

    excessive acidity


    正确答案： D
    解析： 暂无解析

  • 第22题：

    单选题
    In a diesel engine cooling water system, a pH of 60 indicates a/an （）.
    A

    slightly acidic condition

    B

    slightly alkaline condition

    C

    overtreatment of water

    D

    neutral condition of water


    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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