英语3电气管理题目

第三章船舶电气与船舶安全

1886Thestaringcurrentofana.c.motoristherated

current.

交流电机的启动电流比额定电流大得多。A.the

sameasB.muchlargerthanC.lessthan

D.equals

1887Ammeteristomeasurethe安培表用来测量电

流。

A.currentB.voltageC.power

D.frequency

Inamodemthree-phaseA.C.synchronousbrushesgenerator,

theexcitation

windingisontherotor.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.Thewindingontherotorisforinputtingexcitation

current

C.Therearethreephasewindingsontherotor

D.Thegeneratorhasbrushes

1889Theovercurrentrelaythemotorcontactorwhen

themotorexceedsitsratedcurrent.当电动机超过额定电

流时，过电流继电器将跳开。

A.connectsB.tripsC.fouls

D.destructs

1886B1887A1888B1889B

Theisameasureofthephasedifferencebetween

voltageandcurrent

andisexpectedasthecosineofphaseangle.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.effective

powerD.powerfactor

1891Currentchangingindirectionandrisingandfallingin

valueis

方向、大小都变化的电流是交流电。

A.A.C.B.D.C.C.generator

D.freshwatergenerator

1892Theoperationofparallelingtwoalternatorsrequiresthe

voltagestobeandalsoinphase.两台交流发电机

并联，需要电压相等，并且同相。

A.zeroB.eliminatedC.

differentD.qual

1893The,cagerotorinductionmotoristhefirst

choicemarinemotorinmostmodemshipsbecauseofits

electricalandmechanicalsimplicity.

现代船舶上使用的电机都是三相电机。A.singlephase

B.如ophaseC.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.N)neofhei)ove

1890D1891A1892D1893C

1894B

Withaloadthevoltageandcurrentareinphase.

对于纯电阻负荷，电压和电流同相。

A.purelyresistanceB.capacitiveC.inductive

D.Noneoftheabove

1896Increasingthetemperatureofafuelwillits

viscosity.

提高燃油的温度将降低其粘度。A.increaseB.reduce

C.keepD.Noneoftheaboveistrue.

1897Theisusedtomeasurethevolumeofaliquidor

gasthroughapipelin

withinanygivenperiodoftime.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.flowmeter

B.viscometerC.micrometerD.feeler

1898"gaugepressure"means"表压”即是“超过大

气压的压力”。

A.vacuumB."theexcessofpressureabove

atmosphere"

C.'figureonagauge"D.Anyofheabove

1899Amanometerisusedtomeasure压气计用来测量

压力。

A.pressureB.temperatureC.

volumeD.specificgravity

1900Theviscosityregulatorcontrolsthefueloil

temperatureprovideoilatthecorrectviscosity

forcombustion.粘度调节器通过控制燃汕的温度实现粘度的

控制。A.horderhatB.becauseofC.inorder

toD.owingb

1895A1896B1897A1898B

1899A1900C

Aviscosityregulatorusedforanengineisusuallyprovidedin

ordertoforanengineburning

heavyfueloil.

柴油机的粘度调节器能保持燃油粘度恒定。

A.regulatethefuelsupplyB.maintainaconstantfuel

viscosityatthefuelvalves

C.maintainefficientcoolingD.alterthefuel

density

1902Oilmistdetectorsareusuallyusedonboardtodetectoil

mistdensityw汕in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.theengine

scavengeboxes

C.draintinksD.fueltanks

1903UMSstandsforUMS代表“无人机舱''。

A.ultramuchspaceB.universalmedium

system

C.unitmachinedspaceD.unattended

machineryspace

1904Themaingeneratorsareconnectedto_____主发电机

与主配电板相连。A.distributionboardsB.section

boardsC.emergencyswitchboards

D.mainswitchboards

1901B1902A1903D1904D

1905Theemergencygeneratororemergencybatteryis

connectedtoonmostlarge

ships.应急发电机或应急蓄电池与应急配电板相连。

A.distributionboardsB.section

boards

C.emergencyswitchboardsD.mainswitch

boards

Switchboardsmaybeofthedead-fronttypeinwhichalllive

partsareinstalledbehind

andonlytheoperationhandlesand

instrumentsareonthefront

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.thecollector

C.hepanelsD.thesurface

1907Remotecontrolmeansthat遥控，意即“系统位

于远离操作者处”。

A.thesystemismannedmanuallyB.thesystemis

situatedremotelyfromtheoperator

C.thesystemiscontrolledautomaticallyD.

alltheabove

1908Theisacrystalwhich,underpressure,produces

anelectriccurrentwhich

varieswiththepressure.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.glassthermometerC.burdon

tube

D.piezoelectricpressuretransducer

1909handleandinstrumentsareonthefront.题干表达

有误。可参考第1906题。

A.openB.openfronttype

C.IvefontypeD.Noneoftheabove

1905C1906C1907B1908D

1909B

1910WithUMS,whentheengineroomis

unwatchedwillcontrolthemainengine.

对于无人机舱，由值班驾驶员来控制主机。

A.thebridgeofficeronwatchB.thechief

engineer

C.hedutyengineerD.hedutymotorman

1911Thedifferencebetweenmeasuredanddesiredvaluesis

called_____

测量值和所需要值之间的差，称为“偏差”。

A.make-upB.desiredvalueC.

deviationD.stvalue

systemsareprovidedwithastand-bydevicewhichwill

automaticallybe

putinuseintheevenoftherunningdevicefailing

throughafaultcondition.

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.Auto

start-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.Allofhe±)ove

1914poweristhepowerdevelopedwithinthe

cylinderandcanbemeasm'edby

anengineindicator.指示功是气缸内发出的功率；可

通过示功图来测量。

A.TheshaftB.Themechanical

C.TheelectricD.Theindicated

1915controlsystemisoneinwhichthecontrolaction

isindependentoftheout­

put.控制作用与输出量无关，这种控制系统是开

环控制。

A.FeedbackB.Negativefeedback

C.GoseloopD.Q)enloop

1910A1911C1912C1913D

1914D1915D

Priortoanyoverhaulworkonelectricequipment,itisimportant

toensurethecircuits

are对电气设备检修前，应确保电路切断。

A.liveB.deadC.

excitedD.onine

1917MoistureinaD.C.motorwouldcause水分会引

起直流电机短路。

A.shortcircuitB.speedupC.

slowdownD.hunting

1918Oncommonlyusedships,iftwoA.C.generatorsare

operatedinparallel,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。正确答案应为

A.varyingtheD.C.excitervoltageB.

varyingthereluctanceoftheairgap

C.regulatingthespeedofprimemoverD.shorting

outpartofthearmaturewindings

1919Electricinsulationismadeoforganicsubstancesandso

graduallywithage.

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.are

fouledD.becomesbetter

1920Electricinsulationismadeoforganicsubstancesandso

graduallywithage.

见上题。A.deterioratesB.increasesC.

aref)uledD.becomesbetter

1916B1917A1918D1919A

1920A

1921Thesystemwillincludevarioussuchaslowtank

levelalarmsand

remoteoperationoftankoutletvalvesintheeventsofafire.

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.A

compressorD.Adarifer

1923Thecoilofwirerotatinginthemagneticfieldproduces

the_____

在磁场中旋转的线圈能产生电流。

A.voltageB.currentC.

powerD.frequency

1924Shorepowermustbeduringdockrepair.坞修期

间，必须接岸电。

A.disconnectedB.switchedoffC.

cutoffD.connected

Thecurrentflowingfirstinonedirectionandtheninanotheris

called

current.方向改变的电流是交流电。

A.analternatingB.arushC.a

directD.aiexciting

1921D1922A1923B1924D

1925A

1926Electricalsupplyisalwaysneededevenifonlyforlighting

soafteraship

goesintoserviceitisextremelyrareforthemain

bus-barstobedead,itthereforefollowsthatthebus-barsare

continuouslyalivethelifeoftheship.

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.throughout

D.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.no

permissibleD.notpermissible

1928Youmusttakegoodcareofthedrainagecockoftheair

controlsystem.Becauseleadsscaleformedwhich

mightmalfunctionsthepilotcontrolvalveandother

instruments.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.the

pressureD.hehumidity

1929Theliquidflowinginthecapillaryissuchthatthe

differenceinreadingstakenbeforethecapillaryand

afteritisrelatedtotheoilviscosity.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.flow

rateD.bmperature

1930shallbecontinuouslypoweredandshallhavean

automaticchangeovertoastandbypowersupplyincaseof

lossofnormalpowersupply.报警系统应持续供电。

A.Coolingsystem

B.Alarmsystem

C.TheairconditioninginstallationD.The

mootingequipment

1926C1927D1928D1929A

1930B

1931isamachinebywhichelectricalenergyis

transformedinto

mechanicalenergy.将电能转化为机械能的是电动

机。

A.AnalternatorB.An

electricmotor

C.AdieselengineD.Amain

switchboard

1932Currentchangingindirectionandrisingandfallingin

valueis—见第1891题。A.A.C.B.

D.C.C.generatorD.freshwatergenerator

1933Switchkx)ardsmaybeofthedead-fronttypeinwhich

alllivepartsare

installedbehindandonlytheoperation

handlesandinstrumentsare

onthefront见第1906题。

A.thecapstanB.thecollectorC.the

panelsD.hebake

1934Afterashipentersserviceitisforthemain

bus-bartobemadedead.

船舶投人使用后，主母线不带电是极其少见的。

A.usuallyB.commonlyC.exceptional

D.unavoidably

Theseparatesuppliesareconnectedineitherstarordelta

formation.Thestarformationismostcommonlyusedand

requiresslip-ringsonthe

alternator.Y形连接需要4个滑环。A.KvoB.

threeC.burD.five

1931B1932A1933C1934C

1935C

1936Theoperationofparallelingtwoaltermatorsrequiresthe

voltagestobe

andalsoinphase.见第1892题。

A.zeroB.eliminatedC.

differentD.equal

Withapurelyloadthevoltageandcurrentareinphase,

givingapower

factorofone.见第1895题。

A.inductiveB.resistanceC.

combinedD.capacitate

1938Theoperationoftwoaltermatorsrequiresthe

voltagestobeequalandalsoinphase.见第1892题。

A.parallelingB.series-mountingC.

runningD.control

1939Whichofthefollowingmarineexamplesbelongstothe

openloopcontrolsystem?只有舱室的加热系统可以采用开环

控制。

A.AccommodationheatingsystemB.

Steeringgear

C.Boilercontrol

D.Cargocontrol

1940istheactualvalueofthecontrolledcondition.

测量值就是控制条件的实际值。

A.DesiredvalueB.SetvalueC.Measuredvalue

D.Deviation

1936D1937B1938A1939A

1940C

1941Thedifferencebetweenmeasuredanddesiredvaluesis

called______

见第1911题。A.offsetB.errorC.

deviationD.stvalue

1942Theovercurentrelaythemotorcontactorwhen

themotorexceedsitsjatedcurrent见第1889题。

A.connectsB.tripsC.

foulsD.destructs

1943Electricinsulationismadeoforganicsubstancesandso

graduallywithage.见第1919题。

A.deterioratesB.increasesC.arefouled

D.arecontaminated

Theisacrystalwhich,underpressure,producesan

electriccurrentwhichvarieswiththepressure.见第1908题。

A.alternatorB.glassthermometer

C.buniontube

D.piezoelectricpressuretransducer

1945Domesticwaterpumpisstartedautomaticallyby

whichoperatesasthewaterlevelfallstoapredeterminedlevel.

日用水泵是由压力开关自动启动的。A.alevelcontroller

B.atemperatureswitch

C.afoatingbdlD.apressureswitch

1941C1942B1943A1944D

1945D

Afterthetroubleoftheautomaticcontrolsystemhasbeen

completely

eliminated,assistanceisrequired.

自动控制系统的故障已彻底排除，不再需要任何帮

A.remainedB.stillC.nolonger

D.muchmore

1947WithUMS,whentheengineroomisunwatched

willcontrolthemainengine.见第1910题。

A.thebridgeofficeronwatchB.thechief

engineer

C.thedutyengineerD.the

dutymotorman

1948Thestaringcurrentofamotoristherated

current.见第1886题。

A.thesameasB.muchlargerthanC.less

thanD.noneofthei)ove

1949Thealternatingcurrentgeneratorsupplyingaloadhasa

voltagedropresultedfromtheload.Whentheloadhasalagging

powerfactorthisvoltagedrop_____由于负荷的特性，交流发

电机会产生电压降，当负荷具有滞后的功率因数时.该电压

下降是很大的。

A.issmallB.maybeneglectedC.

isusefulD.sconsiderable

1950Withapurelyresistanceloadthevoltageandcurrentare

inphase,givingapowerfactorof对于纯电阻的负荷，

电压与电流同彻，功率因数为1A.oneB.less

thanoneC.morehanoneD.negativeone

1946C1947A1948B1949D

1950A

Thepowerfactorisameasureofthephasedifferencebetween

voltageand

currentandisexpressedastheofthephase

angle.见第1890题

A.sineB.cosineC.tangent

D.cotangent

1952Thefieldcoilsandthearmatureis.Ibis

isinfactthe

arrangementadoptedforlarge,heavydutyalternators.

常用大型交流发电机的结构，线圈是旋转的而电枢是静止

的。A.Sationary/rotateB.stationary/stationary

C.rotate/stationaryD.Dtate/rotate

Thestarformationismostcommonlyusedandrequires

onhedternator.

见第1935题。A.oneslip-ringB.twoslipringsC.

threedipringsD.fourdiprings

1954Ana.c.switchboardisusuallythecorresponding

d.c.boardbecauseofthehighervoltageandlowercurrents

andsmallerbus-bars.交流配电板比相应的直流配电板尺寸

＜）、、重量轻。A.hrgeraidheavierhanB.

asmuchas

C.smallerandlighterthanD.more

dangerousthan

1955Themagneticfieldisprovidedbyelectromagnetsso

re'rangedthatadjacentpoleshave磁场有电磁铁提供，

其布置应使相邻的极具有相反的极性

A.oppositepolarityB.thesamepolarityC.

negativepolarityD.positivepolarity

1951B1952C1953D1954C

1955A

Toparallelanincomingmachinetoarunningmachinetherefore

itisnecessarytoensurefirstlythat

见第1892题。

A.twofrequenciesmustbebroughtintophase

B.theincomingmachineacceptsasmallamountof

load

C.therunningmachinemustbeunloadD.

bothvoltagesareequal

1957isprovidedtoalternators,intheeventofprime

moverfailuretoensurethat

thealternatordoesnotactasamotor.交流发电机装

备逆功率保护设备，是为了防止当发电原动机故障时，刁v

能当作马达使用。

A.ReversecurrentprotectionB.Reverse

powerprotection

C.SynchronisingdeviceD.

Frequencymeter

]958Withapurelyloadthevoltageandcurrentare

inphase,givingapowerfac-

torofone.见第1950题。A.hductiveB.

capacitiveC.combinedD.

resistance

1959Whentwodifferentmetalsarejoinedtoformaclosed

circuitandexposedtodifferenttemperaturesattheirjunctions

whichcanbeusedtomeasuretemt-mture.

当两种不同的金属连接形成封闭回路，连接处与不同的温度

接触，将会产生电流.据

此可用来测量温度。此为热电偶的工作原理

A.acurrentwillflowB.apowerwilldevelopC.a

heatwillflowD.apressurewillproduce

1960Movementofthediaphragmorbellowsisbya

linkagetoaneedleorpointer

displaytoindicatethedifferentialpressurebetween

twosidesofthediaphragmorbellows.

膜片或波纹管的移动通过连接装置传递到指针。以显示膜片

或波纹管两侧的压差A.measuredB.ecorded

C.transferredD.controlled1956D

1957B1958D1959A1960C

BourdonTubeisprobablythemostcommonlyused

measuring

instrument.波登管是最常用的表压力测量仪表。A.

theabsolutepressureB.thegaugepressureC.the

vacuumpressureD.thedifferentialpressure

1962Thisarrangementisiftheelementsaredirectly

connectedtooneanotherandthecontrolactiontakesplace

withouthumaninvolvement.

一步如果控制回路中，部件与部件之间直接相连，控制作用

不需要人员的介入就能完成这种控制形式就是自动闭环控

制。A.amanualclosedloopB.amanual

openedloopC.anautomaticclosedloopD.anautomatic

openedloop

1963Inthecontrolactionisindependentonthe

output.

控制作用与输出量无关，即为开环控制。

A.adosedbopcontrol»stemB.anopen

loopcontrolsystem

C.aboilercontrolsystemD.a

steeringgearcontrolsystem

1964Usuallythepanelsareinterlockedwithsothatthe

devicescanbemade

deadbeforethedoorsareopened.

通常，面板与隔离开关是相互联锁的，这样在门打开之前，

设备是不带电的。A.protectiveearthB.isolatorsC.

groundswitchD.circuit-breakers

1965Itforanemergencygeneratortorequire

paralleling.

对于应急发电机来说，一般不需要并联运行（除大型客轮外）。

A.isusualB.isnotusualC.isnecessary

D.isnotimpossible

1961B1962C1963B1964B

1965B

Theswitchboardsfora.c.systemsdifferfromthed.c.switch

gearinthattheopentypepanelsaregenerally

andthedead-frontswitchgearisthecommonrule.见第

1927题

A.permissiblyB.permissibleC.no

permissibleD.notpermissible

1967isusedtoproduceelectricpower.见第1922题。

A.AnalternatorB.AfreshwatergeneratorC.A

compressorD.Aclarifer

1968Themagneticfieldisprovidedbyelectromagnetsso

arrangedthatadjacentpoleshave见第1955题。

A.oppositepolarityB.hesamepolarity

C.negativepolarityD.positivepolarity

1969Domesticwaterpumpisstartedautomaticallyby

whichoperatesasthewaterlevelfallstoapredeterminedlevel.

见第1945题。

A.alevelcontrollerB.atemperatureswitch

C.apressureswitchD.afloatingball

1970Brushlessgeneratorsaredesignedtooperatewithoutthe

useof____

无刷发电机，不需要碳刷、滑环和换向2s等装置。

A.brushesB.slipringsC.commutators

D.alloftheabove

1966D1967A1968A1969C

1970D

Agroundcanbedefinedasanelectricalconnectionbetweenthe

wiringofamotorand

its电机接地可以定义为，电机的电线与金属

壳体之间的电气连接。

A.shuntfieldB.circuitbreakerC.metal

frameworkD.hter-pole

1972Theoutputvoltageofa440volt,60hertz,ACgenerator

iscontrolledbythe

对于440V,60Hz的交流发电机的输出电压，是由励磁机的

输出电压来控制的。

A.primemoverspeedB.exciteroutput

voltage

C.badonhedternatorD.numberofpoles

1973Anyelectricmotorcanbeconstructedtobe任何交

流电动机都应该防爆。

A.shortproofB.groundproofC.explosion

proofD.overloadproof

1974Whichofthefollowingstatementsrepresentsthemain

differencebetweenarelayandacontactor接触器与继电

器的主要区别是它能承受较大的负载。

A.Contactorscontrolcurrentandrelayscontrol

voltage.

B.Arelayisseriesconnectedandacontactoris

parallelconnected.

C.Contactorscanhandleheavierloadsthanrelays.

D.Contactorsaremadefromsilverandrelaysare

madefromcopper.

1975Anaccidentalpathoflowresistance,allowingpassage

ofabnormalamountofcurrentisknownasa/an

产生低电阻、高电流，即发生短路。

A.opencircuitB.shortcircuitC.polarizedground

D.groundreferencepoint

1971C1972B1973C1974C

1975B

Aresistanceinacircuitofunknownvalueistobetestedusing

thevoltmeter/ammeter

method.Therefore,themetersshouldbeconnected

with____

电流表应与电阻串联，而电压表应与电阻并联。

A.bothmetersinserieswiththeresistance

B.bothmetersinparallelwiththeresistance

C.theammeterinseriesandthevoltmeterinparallel

withtheresistance

D.theammeterinparallelandthevoltmeterinseries

withtheresistance

1977Whichofthefollowingelectricmotorswouldbethe

safestandmostreliabletouseonthemaindeckofavesselin

foulweatherconditions?

在潮湿气候状况下，船舶主甲板上使用最安全、最可靠的电

动机是水密性电动机。

A.SealedmotorsB.DripproofmotorsC.Enclosed

motorsD.Watertightmotors

1978Adirectcurrentpassingthroughawirecoiledarounda

softironcoreisthedescriptionofasimple____直流电通过

绕在软铁芯上的电线，这就是简单的电磁铁的结构。A.

magneticshieldB.electromagnetC.piezoelectricdeviceD.

electromagneticdomain

1979Whichofthelisteddevicesisusedtomeasurepressure

andconvertittoanelectricalsignal?压力传感器能测量压力,

并把它转换成电信号。

A.TransducerB.ReducerC.

TransformerD.I^ctifier

Thedevicethatmostcommonlyutilizestheprincipleof

electromagneticinductionisthe普遍利用电磁铁感应原

理的设备是变压器。A.diodeB.transformer

C.transistorD.rheostat1976C1977

D1978B1979A1980B

Onefactorthatdeterminesthefrequencyofanalternatoristhe

决定交流发电机频率的一个因素是磁极的数目。

A.numberofturnsofwireinthearmaturecoilB.

numberofmagneticpoles

C.strengthofthemagnetsused

D.outputvoltage

Whichofthemotorsforthedeviceslistedbelowisfittedwith

aninstantaneous

overloadrelay?.一般地说，起货机装有瞬时过载

继电器。

A.FanB.PumpC.Winch

D.Machinetool

1983TheWheat-stonebridgeisaprecisionmeasuring

instrumentutilizingtheprincipleofchangesin惠斯登

电桥是一种利用电阻变化的原理的精确测量仪表。

A.inductanceB.capacitanceC.

resistanceD.anperage

1984Thegreatestdetrimentaleffectonidleelectrical

equipment,suchascargopumpmotors,isthe对于闲

置的电气设备，如货物泵电动机，最大的伤害是绝缘材料吸

收水分。A.lossofresidualmagnetismB.

absorptionofmoistureintheinsulationC.insulation

varnishflakingD.dirtcollectingonthewindings

1985hefrequencyoutputofanoperatingalternatoris

controlledbythe

对于运转中的发电机，输出频率是由转子电极之间的相对速

度来控制。A.relativespeedoftherotorpolesB.

numberofturnsofwireintheannaturecoil

C.strengthofthemagnetsusedD.

outputvoltage

1981B1982C1983C1984B

1985A

1986Anelectricaldevicewhichpreventsanactionfrom

occurringuntilallotherrequiredconditionsaremetiscalled

a/an____

用来防止产生动作，直到其他所需要的条件都满足，这种电

器设备被称为联锁设备。A.limitB.monitor

C.modulatorD.hterlock

Acircuitbreakerandafusehaveabasicsimilarityinthatthey

both____

电路切断器和熔断丝具有基本相同的作用一一过载时，都能

切断电流。

A.canberesettoenergizethecircuitB.should

openthecircuitwhenoverloaded

C.willbumoutwhenanovercurrentflowdevelops

D.Alloftheabove

1988Theelectrolyteinalead-acidstoragebatteryconsistsof

distilledwaterand

铅一酸蓄电池的电解质是由蒸储水和硫酸组成。

A.hydrogenchlorideB.calciumchlorideC.sulfuric

acidD.muriaticacid

1989Electricalleadsandinsulationonamotorshouldbe

paintedwith

电动机上的绝缘材料应刷绝缘漆。

A.heat-resistingacrylicB.heat-resistingaluminum

C.insulatingvarnishD.insulating

whitelead

VoltagegeneratedbymostACgeneratorsisfedfromthe

machinetothebusbymeansof绝大多数交流发电机产生

的电压，通过来自于静子的直接连接线，从发电机输送到母

线。

A.brushesonacommutatorB.brusheson

sliptings

C.slipringsonacommutatorD.direct

connectionsfromthestator

1986D1987B1988C1989C

1990D

Acircuitbreakerdiffersfromafuseinthatacircuitbreaker

电路切断器和熔断丝不同之处是它既能切断电路又能复位。

A.meltsandmustbereplacedB.isenclosedinatubeof

insulatingmaterialwithmetalferrulesateachend

C.givesnovisualindicationofhavingopenedthecircuit

D.tripstobreakthecircuitandmaybereset

1992Asageneralrule,thefirsttroubleshootingactiontobe

takenincheckingfaulty

electriccontroldevicesisto

对电力控制设备进行故障诊断时，一般首先足试验所有的熔

断丝并测量线路电压

A.drawaonelinediagramofthecircuitryB.

testallfusesandmeasurethelinevoltage

C.takemeggerreadingsD.insulatethe

apparatusfromground

1993Anelectricaldevicewhichemploysastationary

armatureandarotating

electromagneticfieldisusedaboardshipasa

船舶上，使用静止的电枢和旋转的电磁场的电力设备是船川

发电机。

A.magneticamplifierB.shipsservicealternatorC.

three-wireDCgeneratorD.saturablecorereactor

1994Thefirstrequirementforlogicaltroubleshootingofany

systemistheabilityto

对于任何系统进行逻辑性故障诊断，首要的是应具有识别正

常运行状态的能力。

A.collectallavailabledataonacasualtyB.

recognizenormaloperation

C.identifytheprobablecauseofasymptom

D.isolatethefaultycomponent

1991D1992B1993B1994

B

Theloadsharingcharacteristicsoftwodieselgenerators

operatinginparallelare

mostlydependentontheirgovernor

并联运行的两台发电机的负荷分配特性，在很大程度上取决

于它们的调速器的固定

偏差。A.badlimitsettingsB.diepeedsettings

C.speedlimitsettingsD.speeddroop

settings

1996Whattypeofrotorisusedinsplit-phasemotors?三相电

机常采用鼠笼式转子。

A.DrumB.SalientpoleC.

Squirrel-cageD.W)und-rotor

1997AconstantoutputvoltagefromanACgeneratoris

maintainedbythe

交流发电机的输出电压是通过电压调节器米保持恒定的。

A.primemovergovernorB.exciter

generator

C.v