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单选题When lighting off an auxiliary boiler, which of the problems listed could cause the burners to sputter?（）A cold fuel oilB low fuel oil pressureC low atomizing steam pressureD water in the fuel oil

题目
单选题
When lighting off an auxiliary boiler, which of the problems listed could cause the burners to sputter?（）
A

cold fuel oil

B

low fuel oil pressure

C

low atomizing steam pressure

D

water in the fuel oil

相似考题

1.The correct procedure for giving an auxiliary boiler a bottom blow, is to begin .A.when the boiler has been secured long enough for most solids to settleB.when the boiler has been cooled to ambient temperatureC.only after raising the water level to within 0.5 inch of the high water cutout onlyD.after bypassing the low pressure

2.A firebox explosion in an automatically fired auxiliary boiler may be the result of ______.A.excessive purging before lighting offB.insufficient trail for ignition periodC.a faulty transformer in the ignition circuitD.insufficient purging before lighting off

3.Which statement about the inert gas system is TRUE ________．A.Boiler soot blowers should never be used when the IG system is operatingB.The boiler will produce the best quality of flue gas for the IG system when the boiler load is very lightC.The boiler will produce the most quantity of flue gas for the IG system when the boiler load is very lightD.Flue gas with excessive oxygen content is de-oxygenated in the scrubber

4.When an auxiliary boiler is panting and emitting(发出) black smoke, you should______.A.increase the fuel oil temperatureB.decrease the fuel oil temperatureC.decrease the fuel oil supply pressureD.increase the air supply

参考答案和解析
正确答案： C
解析： 暂无解析
更多“When lighting off an auxiliary boiler, which of the problems”相关问题

  • 第1题：

    单选题
    In the voyage, when carrying out abandon ship drill, should be test every time（）.
    A

    the emergency lighting system for muster and abandon ship

    B

    air/oil emergency shut-down

    C

    M-Eemergency operation

    D

    main/auxiliary steering gear changing


    正确答案： A
    解析： 暂无解析

  • 第2题：

    单选题
    The purpose of the safety relief valves installed on an auxiliary boiler is to （）.
    A

    relieve excess fuel oil pressure during the “off” fire cycle

    B

    admit water to the dry pipe

    C

    throttle the forced draft fan output for proper combustion

    D

    reduce excess steam pressure in the boiler


    正确答案： C
    解析： 暂无解析

  • 第3题：

    单选题
    In the event of a flame failure in an auxiliary water-tube boiler, you must（）
    A

    relight the boiler immediately to prevent loss of steam pressure

    B

    relight the fire off the brickwork as the bricks are cherry red

    C

    purge the furnace of any combustible gases before attempting to relight the fire

    D

    speed up the feed pump to prevent dry firing when the burner flame is reestablished


    正确答案： C
    解析： 暂无解析

  • 第4题：

    单选题
    When an auxiliary boiler is panting and emitting black smoke, you should （）.
    A

    increase the fuel oil temperature

    B

    decrease the fuel oil temperature

    C

    decrease the fuel oil supply pressure

    D

    increase the air supply


    正确答案： A
    解析： 暂无解析

  • 第5题：

    单选题
    The fuel oil supply system to an automatic auxiliary boiler, will automatically shutdown if the boiler （）
    A

    steam demand is high

    B

    salinity is high

    C

    safety valve simmers

    D

    burner flame is extinguished


    正确答案： C
    解析： 暂无解析

  • 第6题：

    单选题
    Which one is not the normal operation for boiler shutdown?（）
    A

    Carry out soot blowing if permissible

    B

    Change fuel supply to diesel oil

    C

    Close steam stop valves on boiler when pressure is reduced

    D

    Drain boiler empty when it has cooled down


    正确答案： B
    解析： 暂无解析

  • 第7题：

    单选题
    The flame safeguard control system of a large automatic auxiliary boiler will provide fuel shut off in the case of high （）.
    A

    water

    B

    voltage

    C

    fuel pressure

    D

    steam pressure


    正确答案： D
    解析： 暂无解析

  • 第8题：

    单选题
    Exhaust pipes for separate diesel engines can be combined only when （）
    A

    space limitations prevent separately run pipes

    B

    the engines are small auxiliary units

    C

    they are arranged to prevent gas backflow to each engine

    D

    a waste heat boiler is installed


    正确答案： D
    解析： 暂无解析

  • 第9题：

    单选题
    For proper operation, auxiliary boiler feed water must have which of the following characteristics?（）
    A

    High oxygen concentration

    B

    Low pH

    C

    Proper alkalinity

    D

    All of the above


    正确答案： C
    解析： 暂无解析

  • 第10题：

    单选题
    The boiler water alkalinity in a coil-type auxiliary boiler should be maintained at the pH recommended by the boiler manufacturer to（）
    A

    precipitate silica from solution

    B

    reduce corrosion in the heating coil

    C

    prevent clogging and erosion in the coil

    D

    maintain zero water hardness


    正确答案： C
    解析： 暂无解析

  • 第11题：

    单选题
    Excessive alkalinity of the water in an auxiliary boiler can cause （）.
    A

    caustic embrittlement of the boiler metal

    B

    acidic corrosion of the boiler metal

    C

    hard scale deposits on the boiler tubes

    D

    etching of the heat exchange surfaces


    正确答案： A
    解析： 暂无解析

  • 第12题：

    单选题
    Which action should be taken when an auxiliary boiler in is operation?（）
    A

    Clean all electrical connections

    B

    Lift the relief valves by hand

    C

    Inspect and clean all solenoid valves

    D

    Inspect for oil and water leaks


    正确答案： B
    解析： 暂无解析

  • 第13题：

    单选题
    The water level of an exhaust gas boiler which is independent of the auxiliary boiler and just as the extra heating surface of it （）
    A

    will be modulated in proportion

    B

    will be modulated in proportion and integral

    C

    will be modulated in proportion and differential

    D

    will not be modulated at all


    正确答案： C
    解析： 暂无解析

  • 第14题：

    单选题
    In readying an auxiliary water-tube boiler for a routine hydrostatic test, which of the following procedures should be undertaken prior to filling the boiler with fresh water?（）
    A

    The safety valve escape piping should be disconnected from the valve body and a blank inserted

    B

    The boiler vent valves should be opened

    C

    All hand-hole/manhole covers should be tightened up as much as possible to preclude any leaks

    D

    All of the above


    正确答案： D
    解析： 暂无解析

  • 第15题：

    单选题
    In readying an auxiliary water-tube boiler for a routine hydrostatic test, which of the following procedures should be undertaken prior to filling the boiler with fresh water?（）
    A

    The safety valve escape piping should be disconnected from the valve body and a blank inserted

    B

    The boiler vent valves should be opened

    C

    All handhole/manhole covers should be tightened up as much as possible to preclude any leaks

    D

    All of the above


    正确答案： B
    解析： 暂无解析

  • 第16题：

    单选题
    The water in an auxiliary boiler should be tested daily for （）.
    A

    dissolved oxygen

    B

    chlorides

    C

    sludge

    D

    dissolved nitrogen


    正确答案： C
    解析： 暂无解析

  • 第17题：

    单选题
    In the voyage, when carrying out abandon ship drill （） should be test every time.
    A

    the emergency lighting system for muster and abandon ship

    B

    air oil emergency shut-down

    C

    ME emergency operation

    D

    main auxiliary steering gear changing


    正确答案： D
    解析： 暂无解析

  • 第18题：

    单选题
    A firebox explosion in an automatically fired auxiliary boiler may be the result of （）
    A

    excessive purging before lighting off

    B

    insufficient trail for ignition period

    C

    a faulty transformer in the ignition circuit

    D

    insufficient purging before lighting off


    正确答案： C
    解析： 暂无解析

  • 第19题：

    单选题
    When there is a flame failure in an automatically fired auxiliary boiler, the （）.
    A

    air supply is shut off

    B

    fuel supply is shut off

    C

    water supply is shut off

    D

    safety valve lifts


    正确答案： A
    解析： 暂无解析

  • 第20题：

    单选题
    A （） boiler is an auxiliary boiler sometimes included in a steamships installation for supplying steam to auxiliaries in port.
    A

    monkey

    B

    donkey

    C

    waste heat

    D

    main


    正确答案： D
    解析： 暂无解析

  • 第21题：

    单选题
    The water level in a steaming auxiliary boiler will always （）
    A

    rise when the steam pressure is increased

    B

    remain constant as long as the feed pump operates

    C

    fall when the steam pressure is decreased

    D

    vary as the steam demand changes


    正确答案： D
    解析： 暂无解析

  • 第22题：

    单选题
    Which of the following conditions could cause the feed pump for an auxiliary boiler to lose suction?（）
    A

    Increased suction head pressure

    B

    Decreased feedwater temperature

    C

    Pump recirculating line being open too much

    D

    Excessive feedwater temperature


    正确答案： B
    解析： 暂无解析

  • 第23题：

    单选题
    Prior to lighting off a cold automatically fired auxiliary boiler, you should （）.
    A

    check and regulate the water level

    B

    close the air cock once fires are lit

    C

    blowdown the gage glass

    D

    crack the steam stop to assure protective steam flow


    正确答案： A
    解析： 暂无解析

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