Which of the listed devices is used to measure pressure and convert it to an electrical signal?A.TransducerB.ReducerC.TransformerD.Rectifier
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
相关考题:
Which of the listed pressure control valves would be used to establish the maximum operating pressure of a hydraulic system?A.Pressure-reducing valveB.Unloading valveC.Counterbalance valveD.Pressure-relief valve
Which of the listed devices may be used as a digital device?A.variable resistorB.diodeC.strain gaugeD.thermistor
Which of the following network devices uses NAT to convert private IP addresses into public IPaddresses?() A.NASB.FirewallC.HubD.Bridge
________ is a device used to measure atmospheric pressure.A.BarometerB.ThermometerC.ChronometerD.Speedometer
A sling psychrometer is used to measure ______.A.seawater temperatureB.engine temperatureC.dry bulb and wet bulb temperaturesD.barometric pressure
An aneroid barometer is an instrument ______.A.used to measure the speed of windB.in which the pressure of air is measuredC.that tells which direction a storm is coming fromD.used to measure the height of waves
Which of the following network devices uses NAT to convert private IP addresses into public IPaddresses?()A、NASB、FirewallC、HubD、Bridge
Which of the following devices can route electrical signals only when activated by an external control signal?()A、SolenoidB、RelayC、ClutchD、Capacitor
单选题Which of the listed pressure control valves would be used to establish the maximum operating pressure of a hydraulic system?()APressure-reducing valveBUnloading valveCCounterbalance valveDPressure-relief valve
单选题In order to accurately measure very low pressures, which of the instruments listed should be used?()ACompound gageBBonrdon tubeCManometerDDeadweight gage
单选题Which of the listed devices is used to measure pressure and convert it to an electrical signal?()ATransducerBReducerCTransformerDRectifier
单选题Which of the listed devices could be used as a substitute for a ring grooving tool?()ASteel brushBFine emery cloth or steel woolCA section of the removed compression ringDA case hardened scraper
单选题Which of the listed classes of fire is considered as one involving electrical equipment?()AClass ABClass BCClass CDClass D
单选题The type of gauge most commonly used to measure pressure is the ().Abimetallic typeBdiaphragm typeCbourdon tube typeDresistance-temperature type
单选题An aneroid barometer is an instrument().Aused to measure the speed of windBin which the pressure of the air is measuredCthat tells which direction a storm is coming fromDused to measure the height of waves
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?()ADifferentialBTrunkCBarrelDValve-in-head
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?()AUsed of bimetallic piston ringsBRing gap pre-tensioningCThermal increase in ring-end clearanceDGas pressure acting against the back of the ring
单选题Which instrument is used to measure the relative humidity of air?()AHydrometerBHygrometerCSpectrometerDBarometer
单选题The most common instrument used to measure diesel engine exhaust pressure is the ()ApyrometerBbourdon gaugeCpneumercatorDmanometer
单选题Which of the electrical properties listed will always be the same for each component in a parallel circuit?()AImpedanceBCurrentCResistanceDVoltage
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?()AThe follow-up gearBThe rudder angle indicatorCThe synchronous electric transmitterDA rudder angle limit switch
单选题Which of the motors for the devices listed below is fitted with an instantaneous overload relay?()AFanBPumpCWinchDMachine tool
单选题Which of the listed devices could be used as a ring groove tool during preparation for the installation of new rings?()ASteel brushBFine emery cloth or steel woolCA section of the removed compression ringDA case hardened scraper
单选题Which of the general advantages listed does the electrical pyrometer have over the mechanical pyrometer?()AWhen heated, it will move proportional to the amount the metal has lengthened or expandedBThe pointer associated with the pyrometer scale can be made to also measure engine RPMCIt can be utilized in exhaust manifolds and heat exchangers interchangeablyDIt can indicate temperature at a distant point from the source heat
单选题A sling psychrometer is used to measure().Aseawater temperatureBengine temperatureCdry bulb and wet bulb temperaturesDbarometric pressure
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.Aa current will flowBa power will developCa heat will flowDa pressure will produce
单选题Which of the listed devices would be installed at a control system air pressure reducing station?()AMoisture separatorBVacuum breakerCLubricatorDNon-return valve