niusouti.com

The fuel oil supply system to an automatic auxiliary boiler, will automatically shutdown if the boiler ______.A.steam demand is highB.salinity is highC.safety valve simmers(爆发)D.burner flame is extinguished

题目

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(爆发)

D.burner flame is extinguished

相似考题

1.The fuel supply system to an automatic auxiliary boiler, will be automatically shutdown if the boiler()A.salinity is abnormallyB.high steam demand is tooC.feed-water flow is lowD.water level is abnormally low

2.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

3.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 cycleB admit water to the dry pipeC throttle the forced draft fan output for proper combustionD reduce excess steam pressure in the boiler

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：D
更多“The fuel oil supply system to an automatic auxiliary boiler, will automatically shutdown i ”相关问题

  • 第1题：

    单选题
    If a tow-stroke/diesel engine is over-speeding due to leakage of lube oil into the cylinders, what should you do to stop the engine?（）
    A

    Move the fuel control mechanism to the no fuel position

    B

    Block the fuel supply by closing the master fuel valve

    C

    Shut off the fuel supply and block the flow of intake air

    D

    Relieve all pressure in the fuel system


    正确答案： B
    解析： 暂无解析

  • 第2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3题：

    单选题
    Improper maintenance of an automatic auxiliary boiler oil burner could result in （）.
    A

    fuel pump failure

    B

    fan motor failure

    C

    increased feedwater consumption

    D

    decreased boiler efficiency


    正确答案： B
    解析： 暂无解析

  • 第4题：

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

    salinity is abnormally high

    B

    steam demand is too high

    C

    water level is abnormally low

    D

    feedwater flow is low


    正确答案： C
    解析： 暂无解析

  • 第5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6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7题：

    单选题
    Excessive vibration of an automatically fired auxiliary boiler can be caused by （）
    A

    air or water in the furnace

    B

    combustion pulses

    C

    fuel oil pump failure

    D

    flame failure


    正确答案： D
    解析： 暂无解析

  • 第8题：

    单选题
    After a normal, or safety shutdown, automatic combustion control systems for an auxiliary boiler are designed to prevent the immediate re-firing of a burner in order for the （）.
    A

    furnace to be re-purged

    B

    electric charge to buildup in the igniter

    C

    fuel pump to restart

    D

    drum level to stabilize


    正确答案： C
    解析： 暂无解析

  • 第9题：

    单选题
    The fuel oil system for a diesel engine can be considered in two parts--the fuel supply and the （） systems.
    A

    fuel treatment

    B

    fuel combustion

    C

    fuel injection

    D

    fuel separating


    正确答案： D
    解析： 暂无解析

  • 第10题：

    单选题
    Improper maintenance of the fuel oil burners in an automatically fired auxiliary boiler, could result in （）
    A

    increased fuel consumption

    B

    increased feed water consumption

    C

    fuel pump failure

    D

    combustion control system failure


    正确答案： A
    解析： 暂无解析

  • 第11题：

    单选题
    When the incinerator is stopped, which of the following is wrong?（）
    A

    After stopping supplying sludge oil, the value and pipe should be flushed by flushed by diesel oil and the incinerator continue burning for 10 minutes

    B

    Close auxiliary burner firstly and then close main burner

    C

    After stopping fuel, restoring the position of main fuel supply valve

    D

    Stop blower as soon as stopping supplying fuel oil


    正确答案： B
    解析： 暂无解析

  • 第12题：

    单选题
    After a normal, or safety shutdown, automatic combustion control systems for an auxiliary boiler are designed to prevent the immediate refiring of a burner in order for the （）.
    A

    furnace to be re-purged

    B

    electric charge to buildup in the igniter

    C

    fuel pump to restart

    D

    dram level to stabilize


    正确答案： C
    解析： 暂无解析

  • 第13题：

    单选题
    A smoking burner with a pulsating flame in auxiliary boiler, is an indication that the（）
    A

    fuel oil supply temperature is normal

    B

    burner electrode is incorrectly positioned

    C

    fuel／air ratio is incorrect

    D

    ignition current is too low


    正确答案： B
    解析： 暂无解析

  • 第14题：

    单选题
    When fuel oil has seriously contaminated a diesel engine lubricating oil, you should （）.
    A

    filter to remove the fuel oil

    B

    use the settler to remove the fuel oil

    C

    remove the fuel oil by centrifuging

    D

    drain and then renew the lube oil supply


    正确答案： A
    解析： 暂无解析

  • 第15题：

    单选题
    The purpose of the programmed purge cycle on an automatically fired auxiliary boiler is to（）
    A

    cool the furnace to prevent pre-ignition

    B

    remove explosive vapors from the furnace

    C

    evaporate accumulated unburned fuel oil

    D

    provide sufficient air in the furnace to allow ignition of the fuel


    正确答案： B
    解析： 暂无解析

  • 第16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17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18题：

    单选题
    Thermostatic steam pressure reducing valves are used in the fuel oil service system to control the（）
    A

    double bottom fuel oil tank temperature

    B

    heater supply steam flow

    C

    pressure of the fuel supplied to the burners

    D

    attemperator steam flow in the heater discharge circuit


    正确答案： D
    解析： 暂无解析

  • 第19题：

    单选题
    Ignition failure in an automatically controlled auxiliary boiler could be caused by（）
    A

    carbon deposits on the flame scanner

    B

    high fuel oil temperature

    C

    low fuel oil viscosity

    D

    high steam pressure


    正确答案： B
    解析： 暂无解析

  • 第20题：

    单选题
    A burner responsible for producing black smoke in an automatic auxiliary boiler, would be caused by a （）
    A

    defective solenoid valve

    B

    dirty fuel nozzle

    C

    grounded high tension lead

    D

    faulty ignition cable connector


    正确答案： C
    解析： 暂无解析

  • 第21题：

    单选题
    Burner ignition failure in an automatically fired auxiliary boiler would be caused by（）
    A

    a burned out solenoid in the oil supply valve

    B

    high temperature excess air

    C

    incorrectly setting the hot-well dump valve

    D

    an incorrectly positioned burner snubber realy


    正确答案： D
    解析： 暂无解析

  • 第22题：

    单选题
    Heavy soot accumulations in an auxiliary boiler could be caused by（）
    A

    water in the fuel oil

    B

    excessive cycling

    C

    high fuel oil pressure

    D

    improper burner maintenance


    正确答案： A
    解析： 暂无解析

  • 第23题：

    单选题
    Flame failure in an automatically fired auxiliary boiler can from a/an （）
    A

    incorrect electrode setting

    B

    incorrect nozzle position

    C

    clogged fuel nozzle

    D

    broken high tension lead


    正确答案： D
    解析： 暂无解析

相关内容