单选题During working of an air compressor, （） should be drained.A oil sumpB oil separatorC outlet pipeD inlet pipe

题目
单选题
During working of an air compressor, （） should be drained.
A

oil sump

B

oil separator

C

outlet pipe

D

inlet pipe

相似考题

1.tell us briefly about the working principles of the purifier ,the oil water seperator and air compressor .

2.单选题During working, thermostatic expansion valve should be （）.A either all the way open or all the way closedB normally fully openC throttled depending on loadD controlled by liquefied pressure

3.单选题The sudden reduction of pressure occurring within the crankcase of a refrigeration compressor during starting causes the （）.A sudden evaporation of wax crystals in the lubricantB sudden evaporation of entrapped air in the lubricantC release of refrigerant from the oil/refrigerant mixtureD release of dissolved lubricant from the refrigerant

4.what is the use of “unloader “on main air compressor ?

更多“During working of an air compressor, （） should be drained.”相关问题

  • 第1题：

    单选题
    Air blowing from the intake air filter of an operating air compressor indicates （）.
    A

    broken inlet valves

    B

    broken discharge valves

    C

    pulsations in the air distribution system

    D

    overloading of the air distribution system


    正确答案： A
    解析： 暂无解析

  • 第2题：

    单选题
    During the inspection, the starting air valves should be closed （） the engine from turning.
    A

    to increase

    B

    to speed up

    C

    to prevent

    D

    to reduce


    正确答案： B
    解析： 暂无解析

  • 第3题：

    单选题
    （）are supplied by main switchboard directly.
    A

    Suez Canal searchlight, air compressor and air conditioning compressor

    B

    Air compressor, boiler blower and refrigeration plant

    C

    Boiler blower, Suez Canal searchlight and refrigeration plant

    D

    Suez canal searchlight, air compressor and boiler blower


    正确答案： C
    解析： 暂无解析

  • 第4题：

    单选题
    Before starting an air compressor, It should be （）.
    A

    turned

    B

    oil level checked

    C

    filled with water

    D

    A and B


    正确答案： D
    解析： 暂无解析

  • 第5题：

    单选题
    The air compressor pumps air to the （）.
    A

    expansion tank

    B

    combustion chamber

    C

    air receiver

    D

    evaporator


    正确答案： B
    解析： 暂无解析

  • 第6题：

    单选题
    Air compressors are equipped with unloading systems for the purpose of（）.
    A

    removing all but the frictional load during starting

    B

    relieving intercoolers of high temperature buildups

    C

    providing high starting torque in the drive motor

    D

    seating valve plates during compressor shutdown


    正确答案： D
    解析： 暂无解析

  • 第7题：

    单选题
    The air compressor pumps air to the（）.
    A

    engine cylinder

    B

    air bottle

    C

    evaporator

    D

    condenser


    正确答案： B
    解析： 暂无解析

  • 第8题：

    单选题
    During （）, the starting air valves should be closed to prevent the engine from turning.
    A

    overhaul

    B

    running

    C

    blowing down

    D

    All of the above are correct


    正确答案： C
    解析： 暂无解析

  • 第9题：

    单选题
    An un-loader is installed on an air compressor to （）.
    A

    bypass the high pressure stage to the low pressure stage on 100% of the air compressors in service

    B

    prevent excessive inter-stage pressure buildup

    C

    control compressor discharge pressure

    D

    remove all but the frictional load during starting


    正确答案： D
    解析： 暂无解析

  • 第10题：

    单选题
    Air compressor cylinder un-loaders enable the compressor to （）.
    A

    vary their speed according to temperature and load

    B

    start and come up to speed before air compression begins

    C

    change speed according to overload demands

    D

    reduce compressed air charge density


    正确答案： B
    解析： 暂无解析

  • 第11题：

    单选题
    Routine maintenance on a Central Control Room hermetically sealed air conditioning unit should include （）
    A

    changing the air filter

    B

    recharging the system

    C

    changing compressor lubricant

    D

    renewing container vacuum


    正确答案： A
    解析： 暂无解析

  • 第12题：

    单选题
    During working, when the piston is near the （）, the air ignites the fine spray of fuel.
    A

    TDC

    B

    DTC

    C

    BDC

    D

    BCD


    正确答案： D
    解析： 暂无解析

  • 第13题：

    单选题
    The unloading system on an air compressor will （）.
    A

    increase compressor discharge pressure on demand

    B

    increase compressor operating speed as necessary

    C

    allow the motor to turn the compressor opposed only by friction

    D

    reduce the compressor frictional load when starting


    正确答案： C
    解析： 暂无解析

  • 第14题：

    单选题
    During operation, the （）should check the working condition of the derrick.
    A

    foreman

    B

    operator

    C

    opener

    D

    stevedore


    正确答案： A
    解析： 暂无解析

  • 第15题：

    单选题
    Broken valve strips in an operating low pressure, air compressor will cause （）.
    A

    an immediate crankcase explosion

    B

    oil contamination in the compressed air

    C

    a decrease in compressor capacity

    D

    no immediate loss of the compressed air capacity


    正确答案： A
    解析： 暂无解析

  • 第16题：

    单选题
    Before starting an air compressor, It should be （）.
    A

    unloaded

    B

    primed

    C

    filled with water

    D

    greased


    正确答案： A
    解析： 暂无解析

  • 第17题：

    单选题
    During working of an air compressor, （） should be drained.
    A

    inter cooler

    B

    cylinder

    C

    outlet pipe

    D

    inlet pipe


    正确答案： A
    解析： 暂无解析

  • 第18题：

    单选题
    The air compressor pumps air to the （）.
    A

    air cylinder

    B

    combustion chamber

    C

    steam drum

    D

    expansion tank


    正确答案： B
    解析： 暂无解析

  • 第19题：

    单选题
    The air filter is fixed in the （） of an air compressor.
    A

    inlet pipe

    B

    outlet pipe

    C

    inter cooler

    D

    after cooler


    正确答案： D
    解析： 暂无解析

  • 第20题：

    单选题
    If an air compressor is used to supply compressed air to outlets throughout the engine room and on deck of a vessel, the system is known as the （）.
    A

    combustion control air system

    B

    supply air system

    C

    ships service air system

    D

    low pressure deck air system


    正确答案： D
    解析： 暂无解析

  • 第21题：

    单选题
    To prevent the unnecessary loading of an air conditioning system while maintaining the designed dry bulb temperature and relative humidity in an air conditioning system, you should （）
    A

    admit only enough fresh outside air to provide proper ventilation

    B

    reduce the air reheating system load

    C

    lower the compressor head pressure

    D

    operate the purge recovery unit continuously


    正确答案： C
    解析： 暂无解析

  • 第22题：

    单选题
    Air compressor receivers should be “blown down” at least （）.
    A

    yearly

    B

    quarterly

    C

    monthly

    D

    daily


    正确答案： C
    解析： 暂无解析

  • 第23题：

    单选题
    If an air compressor is used to supply air primarily to the combustion control system and other pneumatic controllers, the entire system is known as the （）.
    A

    control air system

    B

    forced draft air system

    C

    supply air system

    D

    ships service air system


    正确答案： A
    解析： 暂无解析

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