更多“Which of the listed devices is used to measure pressure and convert it to an electrical si ”相关问题
  • 第1题:

    A sling psychrometer is used to measure ______.

    A.seawater temperature

    B.engine temperature

    C.dry bulb and wet bulb temperatures

    D.barometric pressure


    正确答案:C

  • 第2题:

    Which of the following network devices uses NAT to convert private IP addresses into public IPaddresses?()

    • A、NAS
    • B、Firewall
    • C、Hub
    • D、Bridge

    正确答案:B

  • 第3题:

    单选题
    Which of the listed pressure control valves would be used to establish the maximum operating pressure of a hydraulic system?()
    A

    Pressure-reducing valve

    B

    Unloading valve

    C

    Counterbalance valve

    D

    Pressure-relief valve


    正确答案: C
    解析: 暂无解析

  • 第4题:

    单选题
    Which of the listed devices is used to measure pressure and convert it to an electrical signal?()
    A

    Transducer

    B

    Reducer

    C

    Transformer

    D

    Rectifier


    正确答案: C
    解析: 暂无解析

  • 第5题:

    单选题
    Which of the listed classes of fire is considered as one involving electrical equipment?()
    A

    Class A

    B

    Class B

    C

    Class C

    D

    Class D


    正确答案: D
    解析: 暂无解析

  • 第6题:

    单选题
    An aneroid barometer is an instrument().
    A

    used to measure the speed of wind

    B

    in which the pressure of the air is measured

    C

    that tells which direction a storm is coming from

    D

    used to measure the height of waves


    正确答案: B
    解析: 暂无解析

  • 第7题:

    单选题
    In an internal combustion engine, which of the devices listed will force the compression rings to seal the compression gases in the space above the piston?()
    A

    Used of bimetallic piston rings

    B

    Ring gap pre-tensioning

    C

    Thermal increase in ring-end clearance

    D

    Gas pressure acting against the back of the ring


    正确答案: B
    解析: 暂无解析

  • 第8题:

    单选题
    The most common instrument used to measure diesel engine exhaust pressure is the ()
    A

    pyrometer

    B

    bourdon gauge

    C

    pneumercator

    D

    manometer


    正确答案: B
    解析: 暂无解析

  • 第9题:

    单选题
    Which of the devices listed, when used on an electro-hydraulic steering gear, keeps the movement of the redder closely in step with the steering wheel?()
    A

    The follow-up gear

    B

    The rudder angle indicator

    C

    The synchronous electric transmitter

    D

    A rudder angle limit switch


    正确答案: C
    解析: 暂无解析

  • 第10题:

    单选题
    Which of the listed devices could be used as a ring groove tool during preparation for the installation of new rings?()
    A

    Steel brush

    B

    Fine emery cloth or steel wool

    C

    A section of the removed compression ring

    D

    A case hardened scraper


    正确答案: B
    解析: 暂无解析

  • 第11题:

    单选题
    A sling psychrometer is used to measure().
    A

    seawater temperature

    B

    engine temperature

    C

    dry bulb and wet bulb temperatures

    D

    barometric pressure


    正确答案: C
    解析: 暂无解析

  • 第12题:

    单选题
    Which of the listed devices would be installed at a control system air pressure reducing station?()
    A

    Moisture separator

    B

    Vacuum breaker

    C

    Lubricator

    D

    Non-return valve


    正确答案: C
    解析: 暂无解析

  • 第13题:

    An aneroid barometer is an instrument ______.

    A.used to measure the speed of wind

    B.in which the pressure of air is measured

    C.that tells which direction a storm is coming from

    D.used to measure the height of waves


    正确答案:B
    无液[空盒]气压表是测量空气压力的一种仪器。

  • 第14题:

    Which of the following devices can route electrical signals only when activated by an external control signal?()

    • A、Solenoid
    • B、Relay
    • C、Clutch
    • D、Capacitor

    正确答案:B

  • 第15题:

    单选题
    In order to accurately measure very low pressures, which of the instruments listed should be used?()
    A

    Compound gage

    B

    Bonrdon tube

    C

    Manometer

    D

    Deadweight gage


    正确答案: C
    解析: 暂无解析

  • 第16题:

    单选题
    Which of the listed devices could be used as a substitute for a ring grooving tool?()
    A

    Steel brush

    B

    Fine emery cloth or steel wool

    C

    A section of the removed compression ring

    D

    A case hardened scraper


    正确答案: A
    解析: 暂无解析

  • 第17题:

    单选题
    The type of gauge most commonly used to measure pressure is the ().
    A

    bimetallic type

    B

    diaphragm type

    C

    bourdon tube type

    D

    resistance-temperature type


    正确答案: C
    解析: 暂无解析

  • 第18题:

    单选题
    In order to distribute the side pressures over a wide area of the cylinder walls and liners, which of the listed types of pistons are used in modem low pressure air compressors?()
    A

    Differential

    B

    Trunk

    C

    Barrel

    D

    Valve-in-head


    正确答案: A
    解析: 暂无解析

  • 第19题:

    单选题
    Which instrument is used to measure the relative humidity of air?()
    A

    Hydrometer

    B

    Hygrometer

    C

    Spectrometer

    D

    Barometer


    正确答案: C
    解析: 暂无解析

  • 第20题:

    单选题
    Which of the electrical properties listed will always be the same for each component in a parallel circuit?()
    A

    Impedance

    B

    Current

    C

    Resistance

    D

    Voltage


    正确答案: B
    解析: 暂无解析

  • 第21题:

    单选题
    Which of the motors for the devices listed below is fitted with an instantaneous overload relay?()
    A

    Fan

    B

    Pump

    C

    Winch

    D

    Machine tool


    正确答案: A
    解析: 暂无解析

  • 第22题:

    单选题
    Which of the general advantages listed does the electrical pyrometer have over the mechanical pyrometer?()
    A

    When heated, it will move proportional to the amount the metal has lengthened or expanded

    B

    The pointer associated with the pyrometer scale can be made to also measure engine RPM

    C

    It can be utilized in exhaust manifolds and heat exchangers interchangeably

    D

    It can indicate temperature at a distant point from the source heat


    正确答案: B
    解析: 暂无解析

  • 第23题:

    单选题
    When two different metals are joined to form a closed circuit and exposed to different temperatures at their junctions () which can be used to measure temperature.
    A

    a current will flow

    B

    a power will develop

    C

    a heat will flow

    D

    a pressure will produce


    正确答案: B
    解析: 暂无解析