船舶电气英语轮机部分.docx
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船舶电气英语轮机部分
1886Thestaringcurrentofana.c.motoris______theratedcurrent.
交流电机的启动电流比额定电流大得多。
A.thesameasB.muchlargerthanC.lessthanD.equals
1887Ammeteristomeasurethe______安培表用来测量电流。
A.currentB.voltageC.powerD.frequency
Inamodemthree-phaseA.C.synchronousbrushesgenerator,theexcitationwindingisontherotor.Thatmeans_____
对于现代三相交流同步有刷的发电机，励磁线圈在转子上。
意即转子上的线圈用于输入励磁电流。
A.Thegeneratorneednotexcitation
B.Thewindingontherotorisforinputtingexcitationcurrent
C.Therearethreephasewindingsontherotor
D.Thegeneratorhasbrushes
1889Theovercurrentrelay______themotorcontactorwhenthemotorexceedsitsratedcurrent
.当电动机超过额定电流时，过电流继电器将跳开。
A.connectsB.tripsC.foulsD.destructs
1886B1887A1888B1889B
The______isameasureofthephasedifferencebetweenvoltageandcurrentandisexpectedasthecosineofphaseangle.
功率因数可用来表示电压与电流之间的相位差，表达成相位角的余弦。
A.powerB.efficiencyC.effectivepowerD.powerfactor
1891Currentchangingindirectionandrisingandfallinginvalueis______方向、大小都变化的电流是交流电。
A.A.C.B.D.C.C.generatorD.freshwatergenerator
1892Theoperationofparallelingtwoalternatorsrequiresthevoltagestobe______andalsoinphase.
两台交流发电机并联，需要电压相等，并且同相。
A.zeroB.eliminatedC.differentD.equal
1893The______,cagerotorinductionmotoristhefirstchoicemarinemotorinmostmodemshipsbecauseofitselectricalandmechanicalsimplicity.
现代船舶上使用的电机都是三相电机。
A.singlephaseB.twophaseC.threephaseD.fourphase
1894Thestar-deltastarterisaneffectivemethodof______voltagestartingofamotor.采用Y—△启动器是电饥低电压启动的最好方法。
A.increasedB.reducedC.unchangedD.Noneoftheabove
1890D1891A1892D1893C1894B
Witha______loadthevoltageandcurrentareinphase.
对于纯电阻负荷，电压和电流同相。
A.purelyresistanceB.capacitiveC.inductiveD.Noneoftheabove
1896Increasingthetemperatureofafuelwill______itsviscosity.
提高燃油的温度将降低其粘度。
A.increaseB.reduceC.keepD.Noneoftheaboveistrue.
1897The______isusedtomeasurethevolumeofaliquidorgasthroughapipelinewithinanygivenperiodoftime.
流量计用于测量在给定时间内，通过管子的液体或气体的体积。
A.flowmeterB.viscometerC.micrometerD.feeler
1898"gaugepressure"means___“表压”即是“超过大气压的压力”。
A.vacuumB."theexcessofpressureaboveatmosphere"
C."figureonagauge"D.Anyoftheabove
1899Amanometerisusedtomeasure_____压气计用来测量压力。
A.pressureB.temperatureC.volumeD.specificgravity
1900Theviscosityregulatorcontrolsthefueloiltemperature______provideoilatthecorrectviscosityforcombustion.
粘度调节器通过控制燃汕的温度实现粘度的控制。
A.inorderthatB.becauseofC.inordertoD.owingto
1895A1896B1897A1898B1899A1900C
Aviscosityregulatorusedforanengineisusuallyprovidedinordertoforan______engineburningheavyfueloil.
柴油机的粘度调节器能保持燃油粘度恒定。
A.regulatethefuelsupply
B.maintainaconstantfuelviscosityatthefuelvalves
C.maintainefficientcooling
D.alterthefueldensity
1902Oilmistdetectorsareusuallyusedonboardtodetectoilmistdensitywithin______
大型低速柴油机上的油雾检测器用于检测曲柄箱内滑油蒸汽的存在。
A.theenginecrankcaseB.theenginescavengeboxes
C.draintanksD.fueltanks
1903UMSstandsfor______UMS代表“无人机舱’’。
A.ultramuchspaceB.universalmediumsystem
C.unitmachinedspaceD.unattendedmachineryspace
1904Themaingeneratorsareconnectedto______
主发电机与主配电板相连。
A.distributionboardsB.sectionboards
C.emergencyswitchboardsD.mainswitchboards
1901B1902A1903D1904D
1905Theemergencygeneratororemergencybatteryisconnectedto______onmostlargeships.
应急发电机或应急蓄电池与应急配电板相连。
A.distributionboardsB.sectionboards
C.emergencyswitchboardsD.mainswitchboards
Switchboardsmaybeofthedead-fronttypeinwhichalllivepartsareinstalledbehind______andonlytheoperationhandlesandinstrumentsareonthefront
在表面不带电式的配电板中，带电部件安装在面板的后面，只有操作手柄和仪表在前面。
A.thecapstanB.thecollectorC.thepanelsD.thesurface
1907Remotecontrolmeansthat_____
遥控，意即“系统位于远离操作者处”。
A.thesystemismannedmanually
B.thesystemissituatedremotelyfromtheoperator
C.thesystemiscontrolledautomatically
D.alltheabove
1908The______isacrystalwhich,underpressure,producesanelectriccurrentwhichvarieswiththepressure.
压电式传感器是一种晶体，在压力下能产生电流，电流大小随压力变化而变化。
A.alternatorB.glassthermometer
C.burdontubeD.piezoelectricpressuretransducer
1909handleandinstrumentsareonthefront.
题干表达有误。
可参考第1906题。
A.openB.openfronttypeC.livefronttypeD.Noneoftheabove
1905C1906C1907B1908D1909B
1910WithUMS,whentheengineroomisunwatched_____willcontrolthemainengine.
对于无人机舱，由值班驾驶员来控制主机。
A.thebridgeofficeronwatchB.thechiefengineer
C.thedutyengineerD.thedutymotorman
1911Thedifferencebetweenmeasuredanddesiredvaluesiscalled______
测量值和所需要值之间的差，称为“偏差”。
A.make-upB.desiredvalueC.deviationD.setvalue
systemsareprovidedwithastand-bydevicewhichwillautomaticallybe______putinuseintheevenoftherunningdevicefailingthroughafaultcondition.
备用设备装有自动启动系统，当运转设备故障时，便能自动投人使用。
A.MannB.MonitoringC.Autostart-upD.Noneoftheabove
Theoperatingmediumforcontrolsystemsmaybe______
控制系统的操作介质可以是压缩空气、液压油或电力。
A.compressedairB.hydraulicoilC.electricityD.Alloftheabove
1914______poweristhepowerdevelopedwithinthecylinderandcanbemeasm'edbyanengineindicator.
指示功是气缸内发出的功率；可通过示功图来测量。
A.TheshaftB.ThemechanicalC.TheelectricD.Theindicated
1915______controlsystemisoneinwhichthecontrolactionisindependentoftheout-put.
控制作用与输出量无关，这种控制系统是开环控制。
A.FeedbackB.NegativefeedbackC.CloseloopD.Openloop
1910A1911C1912C1913D1914D1915D
Priortoanyoverhaulworkonelectricequipment,itisimportanttoensurethecircuitsare______对电气设备检修前，应确保电路切断。
A.liveB.deadC.excitedD.online
1917MoistureinaD.C.motorwouldcause____
水分会引起直流电机短路。
A.shortcircuitB.speedupC.slowdownD.hunting
1918Oncommonlyusedships,iftwoA.C.generatorsareoperatedinparallel,theloadisdistributedevenlyby____两台交流发电机并联运行时，负荷可以通过调节原动机的转速的方法来实现。
正确答案应
A.varyingtheD.C.excitervoltage
B.varyingthereluctanceoftheairgap
C.regulatingthespeedofprimemover
D.shortingoutpartofthearmaturewindings
1919Electricinsulationismadeoforganicsubstancesandsogradually______withage.
电器绝缘材料是由有机物质组成，随着时间的推移，性能会逐渐恶化。
A.deterioratesB.increasesC.arefouledD.becomesbetter
1920Electricinsulationismadeoforganicsubstancesandsogradually______withage.见上题。
A.deterioratesB.increasesC.arefouledD.becomesbetter
1916B1917A1918D1919A1920A
1921Thesystemwillincludevarious______suchaslowtanklevelalarmsandremoteoperationoftankoutletvalvesintheeventsofafire.
油舱低位报警和速闭阀等都属于安全设备。
A.SwitchesB.panelsC.alarmunitsD.safetydevices
1922isusedtoproduceelectricpower.____
交流发电机用来产生交流电。
A.AnalternatorB.freshwatergeneratorC.AcompressorD.Aclarifer
1923Thecoilofwirerotatinginthemagneticfieldproducesthe______在磁场中旋转的线圈能产生电流。
A.voltageB.currentC.powerD.frequency
1924Shorepowermustbe______duringdockrepair.
坞修期间，必须接岸电。
A.disconnectedB.switchedoffC.cutoffD.connected
Thecurrentflowingfirstinonedirectionandtheninanotheriscalled
______current.方向改变的电流是交流电。
A.analternatingB.arushC.adirectD.anexciting
1921D1922A1923B1924D1925A
1926Electricalsupplyisalwaysneededevenifonlyforlightingsoafterashipgoesintoserviceitisextremelyrareforthemainbus-barstobedead,itthereforefollowsthatthebus-barsarecontinuouslyalive______thelifeoftheship.
船舶的主母线在整个船舶使用期内都是持续有电的。
A.alongB.willC.throughoutD.for
1927Theswitchboardsfora.c.systemsdifferfromthed.c.switchgearinthattheopentypepanelsaregenerally______andthedead-frontswitchgearisthecomn~nrule.
用作交流系统的配电板与用作直流系统的配电板不同之处在于一般不允许使用开式面板，而常用表面不带电式。
A.permissiblyB.permissibleC.nopermissibleD.notpermissible
1928Youmusttakegoodcareofthedrainagecockoftheaircontrolsystem.Because______leadsscaleformedwhichmightmalfunctionsthepilotcontrolvalveandotherinstruments.
必须仔细保养空气控制系统的放残考克。
因为水分会引起水垢形成，从而使得控制阀和其他仪表产生故障。
A.thetemperatureB.themstC.thepressureD.thehumidity
1929Theliquidflowinginthecapillaryissuchthatthedifferencein______readingstakenbeforethecapillaryandafteritisrelatedtotheoilviscosity.
对于在毛细管内流动的液体，毛细管前后的压差读数与油的粘度有关。
A.pressureB.velocityC.flowrateD.temperature
1930______shallbecontinuouslypoweredandshallhaveanautomaticchangeovertoastandbypowersupplyincaseoflossofnormalpowersupply.报警系统应持续供电。
A.CoolingsystemB.Alarmsystem
C.TheairconditioninginstallationD.Themootingequipment
1926C1927D1928D1929A1930B
1931______isamachinebywhichelectricalenergyistransformedinto
mechanicalenergy.将电能转化为机械能的是电动机。
A.AnalternatorB.Anelectricmotor
C.AdieselengineD.Amainswitchboard
1932Currentchangingindirectionandrisingandfallinginvalueis___见第1891题。
A.A.C.B.D.C.C.generatorD.freshwatergenerator
1933Switchkx）ardsmaybeofthedead-fronttypeinwhichalllivepartsareinstalledbehind______andonlytheoperationhandlesandinstrumentsareonthefront见第1906题。
A.thecapstanB.thecollectorC.thepanelsD.thebrake
1934Afterashipentersserviceitis______forthemainbus-bartobemadedead.
船舶投人使用后，主母线不带电是极其少见的。
A.usuallyB.commonlyC.exceptionalD.unavoidably
Theseparatesuppliesareconnectedineitherstarordeltaformation.Thestarfo
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