Regulating Valve

题目

Regulating Valve

相似考题

1.The globe valve has a bulbous body, housing a valve seat and screw down plug or disc arranged at right angles to the axis of the pipeAccording to the above sentence, which of the following statements is not true?A.The profile of the valve is like a globeB.The valve seat is set into the bulbous bodyC.The plug or disc of the valve is made vertical to the axis of the pipeD.The valve seat is located at right side of the plug or disc

2.To add refrigerant to the low side of an air conditioning system, the refrigerant should be introduced through the_______ .A.suction service valve as a vaporB.suction service valve as a liquidC.discharge service valve as a vaporD.charging valve as a liquid

3.ENG VALVE CLOSED指哪个活门（）A、HMVB、PRSOVC、HPSOVD、spar valve

4.Nonverbal communication can be used as a means of contradicting or regulating verbal communication.()此题为判断题(对，错)。

更多“Regulating Valve”相关问题

  • 第1题：

    what is Cisco provides three mechanisms for regulating or shaping traffic？


    正确答案: Class-Based Traffic Shaping
    Generic Traffic Shaping （GTS）
    Frame Relay Traffic Shaping （FRTS）

  • 第2题：

    单选题
    Which one of following statement is not true concerning the suitable sites of the direct acting relief valve and the pilot operated relieve valve?（）
    A

    the direct acting relief valve is used for controlling lower flows and pressure

    B

    the pilot operated relief valve is used for controlling higher flows and pressure

    C

    the pilot operated relief valve is used for controlling lower flows and pressure

    D

    the controlling accuracy of direct acting relief valve is worse than that of the pilot operated relief valve


    正确答案： C
    解析： 暂无解析

  • 第3题：

    单选题
    In a refrigeration system, foaming of the crankcase oil may cause the （）.
    A

    expansion valve to overfeed

    B

    compressor to knock

    C

    water regulating valve to fail

    D

    crankcase drains to plug


    正确答案： B
    解析： 暂无解析

  • 第4题：

    单选题
    If a refrigeration compressor will not start, the reason may be （）.
    A

    the pressure regulating valve is not closing

    B

    an excessive lack of refrigerant in the system

    C

    badly leaking discharge valves

    D

    worn piston rings


    正确答案： B
    解析： 暂无解析

  • 第5题：

    问答题
    what is Cisco provides three mechanisms for regulating or shaping traffic？

    正确答案： Class-Based Traffic Shaping
    Generic Traffic Shaping （GTS）
    Frame Relay Traffic Shaping （FRTS）
    解析： 暂无解析

  • 第6题：

    单选题
    The valve which is most suited for regulating the flow through a pipeline is a （）
    A

    gate valve

    B

    globe valve

    C

    swing-check valve

    D

    plug-cock valve


    正确答案： D
    解析： 暂无解析

  • 第7题：

    单选题
    A governor automatically controls engine speed by regulating （）.
    A

    fuel supply

    B

    firing order

    C

    engine load

    D

    oil level


    正确答案： B
    解析： 暂无解析

  • 第8题：

    单选题
    A thermostatic expansion valve is properly controlling evaporator superheatAdjusting this valve to lower the superheat will result in a/an （）.
    A

    evaporator pressure decrease

    B

    evaporator coil over-feed

    C

    evaporator capacity increase

    D

    expansion valve diaphragm rupture


    正确答案： C
    解析： 暂无解析

  • 第9题：

    单选题
    To add refrigerant to the high side of an air conditioning system, you should introduce the refrigerant through the （）.
    A

    discharge service valve as a vapor

    B

    suction service valve as a liquid

    C

    charging valve as a liquid

    D

    condenser purge valve as a vapor


    正确答案： C
    解析： 暂无解析

  • 第10题：

    单选题
    While troubleshooting a refrigeration system for low head pressure, liquid refrigerant flooding back from the evaporator is determined to be the causeIt may be necessary to （）.
    A

    change the expansion valve adjustment

    B

    readjust the water regulating valve to increase the flow of water

    C

    purge air from the condenser

    D

    clean the waterside of the condenser


    正确答案： B
    解析： 暂无解析

  • 第11题：

    单选题
    The low pressure side of a refrigeration system is considered to exist from the （）.
    A

    expansion valve to the compressor

    B

    receiver to the expansion coil

    C

    expansion valve to the evaporator

    D

    condenser to the expansion valve


    正确答案： A
    解析： 暂无解析

  • 第12题：

    单选题
    The major difference between the discharge and suction valves installed in most low pressure, reciprocating air compressors is that（）
    A

    one valve seats upwards, while the other seats downwards

    B

    the reed valves used on the discharge are made substantially thicker and heavier than the suction valves

    C

    the suction valve springs exert a greater tension than the discharge valve springs

    D

    the discharge valve springs exert a greater tension than the suction valve springs


    正确答案： A
    解析： 暂无解析

  • 第13题：

    单选题
    The period of valve overlap is when （）.
    A

    the inlet valve is open

    B

    the exhaust valve is open

    C

    both valves are close

    D

    both valves are open


    正确答案： C
    解析： 暂无解析

  • 第14题：

    单选题
    The C02 flooding system is actuated by a sequence of steps which are（）.
    A

    break glass，pull valve，break glass，pull cylinder control

    B

    sound evacuation alarm，pull handle

    C

    open bypass valve，break glass，pull handle

    D

    open stop valve，open control valve，trip alarm


    正确答案： D
    解析： 暂无解析

  • 第15题：

    单选题
    Unlike the globe valve, gate valves give full bore flow without change of direction, such a valve is not suitable to partially open operationAccording to the above sentence, which of the following statements is not true?（）
    A

    The globe valve may be suitable for partially open operation

    B

    The globe valve will give full bore flow with change of direction

    C

    The gate valve gives full bore flow with change of direction

    D

    The gate valve is suitable for full bore operation only


    正确答案： A
    解析： 暂无解析

  • 第16题：

    单选题
    If the head pressure of a reciprocating refrigeration compressor is excessive, （）.
    A

    the relief valve should open before the high pressure cutout

    B

    the relief valve should open and allow the excess refrigerant to flow to the receiver

    C

    the high pressure cutout switch should operate before the relief valve opens

    D

    you should close in on the suction valve


    正确答案： B
    解析： 暂无解析

  • 第17题：

    名词解释题
    Regulating Valve

    正确答案： 调节阀
    解析： 暂无解析

  • 第18题：

    单选题
    If the head pressure is too high,（）
    A

    the relief valve should open before the high-pressure cutout

    B

    the relief valve should open and let excess refrigerant go to receiver

    C

    the high-pressure cutout switch should operate before the relief valve opens

    D

    close in on the suction valve


    正确答案： C
    解析： 暂无解析

  • 第19题：

    单选题
    Valve lash, or clearance refers to the （）
    A

    clearance between the top of the valve stem and the rocker arm

    B

    compression of the valve springs

    C

    clearance between the valve seat inserts and the head

    D

    out of roundness of the fuel injection cams


    正确答案： D
    解析： 暂无解析

  • 第20题：

    单选题
    To add refrigerant to the low side of an air conditioning system, the refrigerant should be introduced through the （）
    A

    suction service valve as a vapor

    B

    suction service valve as a liquid

    C

    discharge service valve as a vapor

    D

    charging valve as a liquid


    正确答案： A
    解析： 暂无解析

  • 第21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22题：

    单选题
    In a refrigeration system, if the cooling water to the condenser fails, the（）.
    A

    box temperature solenoid valve will close

    B

    expansion valve will close

    C

    compressor will shutdown

    D

    king valve will open


    正确答案： A
    解析： 暂无解析

  • 第23题：

    单选题
    Valve cages are used on some large diesel engines to （）
    A

    reduce wear on the valve stem

    B

    permit the use of alloy valve seat materials

    C

    reduce heat transfer from the valve seat

    D

    facilitate valve removal for servicing


    正确答案： C
    解析： 暂无解析

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