UttarPradeshPowerCorporationExamPaper2013|Infipark.com

AssistantEngineer(Electrical)

Q.1 WhichHeritagemonumentwasrestoredandreopenedinSep,2013?1)HumayunTomb2)CharMinar3)Tajmahal4)AurangzebsTomb.

Q.2 Whatistheapproximatenumberofyoungvotersoftheageof1821yearswhowillparticipateintheNationalelections20141)12crores2)15crores3)22crores4)10crores

Q.3 ?

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Q.4 Forwhich,thefirstCanadianwomenwontheNoblePrizeforLiterature?1)ShortStories2)Biography3)Plays4)Poetry

Q.5 Whichwomanarcherwhowonthegoldinthe2010Commonwealthgames?1)BombaylaDevi2)AratiSaha3)DeepikaKumari4)KamaamMalleshwari

Q.6 WhataspectdidtheKothariCommissiononEducation1965placeemphasison?1)EducationforAgricultureandIndustry.2)Highereducationforall.3)GirlsEducationuptoUpperPrimaryStage4)EducationonlyinMotherTongue

Q.7 WhoistheChiefElectionCommissionerofIndiaatpresent?1)V.S.Sampath2)J.MLyngdoh3)S.Y,Quereshi

4)T.N.Seshan

Q.8 InwhichtwoStateswastheSarvaShikhaAbhiyanfirstlaunched?1)RajasthanandUttarPradesh.2)GujaratandMadhyaPradesh3)UttarPradeshandMadhyaPradesh4)BiharandRajasthan

Q.9 Towhichplanet,therehavebeentillnowabout40missionsandnow,newinformationwillcomeupfromIndianeffortinyear2013,?1)Mars2)Venus3)Uranus4)Moon

Q.10 WhichPresidentoftheUnitedStatesofAmericawaselected3times?1)FranklinDRoosevelt2)HerbertHoover3)ThomasJefferson4)AndrewJackson

Q.11 WhichamendmentoftheConstitutionsupportstheconstitutionalrighttoeducation.1)44thamendmentof19792)93rdamendmentof20063)17thamendmentof19644)86thamendmentof2002

Q.12 WhichSriLankantownhasIndiahasrecentlyopenedaconsulatein?1)Jaffna2)Galle3)Negombo4)Trincomalee

Q.13 WhichmineralofhasbeenbannedforminingandexportinGoafrom2013?1)Bauxite2)Uranium.3)Pyrite4)IronOre

Q.14 WhichstatehasbeenthefirsttoachievefullsanitationcoverageandcalledaNirmalstate?1)Tamilnadu2)Meghalaya3)Sikkim4)Maharashtra

Q.15 WhatwascommonbetweentheearlycivilisationsofIndia,China,MesopotamiaandEgypt?1)Manysportsandcommongameswereorganised.2)Welldevelopedscriptandlanguageusingpictographs3)RiverValleybasedcitiesandagriculturedependent4)Dependentontradeandinhabitedbycitydwellers.

Q.16 WhichbirdmigratesfromAfricatoGujaratandRajasthan

1)Flamingo2)Cranes.3)Ostrich4)PaintedStork

Q.17 ThePresidentofIndiaiselectedbythemembersofanelectoralcollegewhichdoesn'tincludetheelectedmembersof1)StateAssemblies2)RajyaSabha3)StateLegislativeCouncils4)LokSabha

Q.18 Whichcontinentalplateismovingapartattherateof15cmsayear?1)IndianandEurasianPlate2)MidAtlanticRidge.3)NazcaandPacificplates4)PacificandAustralianPlate

Q.19 Howwereigneousrocksformed?1)Coolingoflavafromeruptions.2)Heatingandcoolingofmagma3)FoldingofrocksintheEarthsinterior.4)Earthmovementswhichledtofaulting.

Q.20 WhichmineralhasbeenbannedforminingandexportinTamilnadufrom2013?1)Ilmeniteandgarnet2)Bauxite3)IronOre4)Uranium.

Q.1 Whichismissinginthefollowingsequenceofletterclusters?

bdfh,cfil,eimq,?,lrxd1)glqv2)hlpt3)hmrv4)hmrw

Q.2 Howmany5sarethereinthefollowingnumbersequenceeachofwhichisimmediatelyfollowedbyanoddnumber,butnotimmediatelyprecededbyanevennumber?

4582575835965375195547531)32)63)44)5

Q.3 Whenthestudentsinaclassareranked,Arvindis7thfromthetopandAnandis9thfromthebottom.SunilisexactlyinthemiddleofArvindandAnand.PrakshandSunilhave5boysbetweenthem,whileArvindandPrakshhave3.Howmanystudentsarethereintheclass?1)362)35

3)344)33

Comprehension:Acubeispaintedredontwoadjacentfacesandononeoppositefaceblueontwooppositefacesandgreenontheremainingface.Itisthencutinto64smallercubes.Answerthefollowingquestions.

Q.4SubQuestionNo:1

Howmanysmallercubeswillhaveonly2facespainted,onewithredandtheotherwithblue?1)162)123)84)24

Q.5SubQuestionNo:2

Howmanysmallercubeswillhaveonlyoneredcoloredface(theothermayormaynotbepainted)?1)402)163)324)12

Q.6 IfAdenotesx,Bdenotes+,Cdenotes,andDdenotes,then

15D(7C2)B5A(11C6)=?1)402)383)284)29

Q.7 Choosethemissingnumberfromamongthealternatives.

1)72)33)114)5

Q.8 Among5items,BweighstwiceasmuchasA.DweighshalfasmuchasC.AweighsthreeandhalftimesasmuchasD.CweighshalfasmuchasE.

Whichofthefollowingrepresentstheascendingorderofweightsoftheitems?1)DCAEB2)DCEAB3)DCABE4)CDAEB

Q.9 Thefirsttwoletterclustersontheleftofthesign::arerelatedinacertainway.Thesamerelationshipholdsforthesecondpairontherightofthesign::ofwhichoneismissing.Choosethemissingonefromamongthealternatives.

BDEG:YVTQ::FIKN:?

1)UQNJ2)VROK3)URPM4)UQMI

Q.10 Howmanytrianglesarethereinthefollowingfigure?

1)222)243)204)18

Q.11 IfeveryalternateletterinthewordORDERLYstartingfromthefirstletterisreplacedbythenextletterintheEnglishalphabetandeachoftheremaininglettersisreplacedbythepreviousletterandthenewlettersarearrangedalphabetically,whichwillbethemiddlemostletter?1)D2)K3)P4)Q

Q.12 Whichofthefollowinggroupsoflettersistheoddoneout?1)CXVE2)EVRI3)BYUG4)GTQJ

Q.13 Twofacesofacubearegivenbelow.Whichnumberwillbeopposite5?

1)22)63)34)1

Q.14 IfAxBmeansAisthehusbandofBA+BmeansAisthemotherofBanABmeansAisthebrotherofB,whichofthefollowingmeansPisthepaternaluncleofT?1)P+QxR+T2)PQxR+T3)PQ+RxT4)PxQ+RT

Q.15 ApersonisstandingonaplatformfacingSouth.Heturned1600clockwiseandthen850

anticlockwise.Finally,heturned1500clockwise.Whichdirectionishefacingnow?1)NorthWest2)SouthEast3)NorthEast4)North

Q.16 If4personstake4daystocomplete4timesofaworkbyworking4hoursaday,howmanydays,would2personstaketocomplete2timesofthesameworkbyworking2hoursaday?1)42)83)164)2

Q.17 ThreestatementsarefollowedbytwoconclusionsnumberedIandII.Assumingthestatementstobetrue,eveniftheyareatvariancewithcommonlyknownfacts,decidewhichoftheconclusionslogicallyfollow?

Statements:(1)Allmammalsarevertebrates(2)Somevertebratesareanimals(3)Someanimalsarehumanbeings.

Conclusions:I.SomevertebratesarehumanbeingsII.Somehumanbeingsareanimals1)OnlyconclusionIfollows2)BothconclusionsIandIIfollow3)OnlyconclusionIIfollows4)EitherconclusionIorIIfollows

Q.18 Ifthepositionofthefirstandthethirddigitsareinterchangedineachofthefollowingnumbers,whichofthefollowingwillbethedifferencebetweenthehighestandthelowestnumbersafterrearrangement?

7594,3985,6427,9215,85371)62352)81973)73974)8279

Q.19 Whichistheoddnumberpair?1)60482)65523)85684)2015

Q.20 Oneofthenumbersinthefollowingnumberseriesiswrong.Whichisthewrongnumber?

5,11,23,49,95,1911)232)493)1914)95

Comprehension:II,III,

?Q.1SubQuestionNo:1

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Q.1 Staticsystemarealsocalledas1)Analogsystem2)Memorysystem3)Digitalsystem4)Memorylesssystem

Q.2 IfLaplacetransformofx1(t)andx2(t)areX1(s)andX2(s)respectively.ThenStatetimeconvolutionpropertyofLaplacetransform,L[x1(t)*x2(t)]is1)X1(s)X2(s)2)2X1(s)X2(s)

3)X12(s)X22(s)4)X1(s)X2(s)

Q.3 Thecapacitanceappearingacrossareversebasedsemiconductorjunction1)Increaseswithincreaseinbiasvoltage2)Isindependentofbiasvoltage3)Dependsuponbreakdown4)Decreaseswithincreaseinbiasvoltage

Q.4 Reactanceofathreereactorsratedat7500kVA,3300V,having7.5%reactanceis1)2ohm2)0.219ohm3)0.209ohm4)0.109ohm

Q.5 Choosetheincorrectstatement.1)AbranchformedbytheseriesconnectionofanyresistorRandashortcircuithasthecharacteristicofresistorR.2)AbranchformedbytheparallelconnectionofanyresistorRandopencircuithasthecharacteristicofanopencircuit.3)AbranchformedbytheseriesconnectionofanyresistorRandanopencircuithasthecharacteristicofanopencircuit.4)AbranchformedbytheparallelconnectionofanyresistorRandashortcircuithasthecharacteristicofashortcircuit.

Q.6 Currentthroughacapacitorisexpressedas__________.1)(d/A)dv/dt2)(Ad/)dv/dt3)(/Ad)dv/dt4)(A/d)dv/dt

Q.7 Fromthepolezeroplotsifthepolesarelyingonleftsideofjaxisthensystemis1)unstable2)causal3)Stable4)critically

Q.8 Astepdownchopperisfedbyadcbusof100V,tofeedacoilofresistance5andinductance200mH.AfreewheelingdiodeisusedtofacilitateZCSofthepowerswitch.Switchisbeingoperatedat1kHzwithadutyratioof0.5.Peaktopeakcurrentrippleinthecoilwillbe1)0.25A2)0.125A3)0.5A4)10A

Q.9 Atwophaseservomotorhas1)Woundrotor2)Cagerotor3)Woundandcagerotor4)Rotorsimilartothatindcmotor

Q.10 Onekilowatthourofelectricalenergyisthesameas1)36x105joules2)36x105watt3)36x105B.T.U.4)36x105ergs

Q.11 ThepurposeofsynchronizingcontrolinaCROisto1)Adjusttheamplitudeofdisplay

2)Lockthedisplayofsignal3)Focusthespotonthescreen4)Controltheintensityofthespot

Q.12 TheopenloopDCgainoftheunityfeedbacksystemwithcloselooptransferfunction

is 1)42)4/133)4/94)13

Q.13 Whichmethodcanbeusedforabsolutemeasurementofresistance?1)Releighmethod2)Lortentzmethod3)Ohmslawmethod4)Wheatstonebridgemethod

Q.14 ToeliminatethirdharmonicinasinglepulsemodulatedPWMinverter,pulsewidthshouldbeof1)1202)1503)604)30

Q.15 Thereisazerosequencecurrentifthetransformerisconnectedby1)StarStar2)StarDelta3)DeltaStar4)DeltaStar,neutralgrounded

Q.16 Acircuithasavoltagesourceof15voltsandthree15resistorsconnectedinparallelacrossthesource.WhatNortonresistance(RN)wouldaload"see"whenconnectedtothiscircuit?1)452)03)154)5

Q.17 Forlowvaluesofdrainsourcevoltages,theJFETactsas1)BJT2)Resistor3)Currentsource4)Voltagesource

Q.18 Thefollowingtypeofdcgeneratorismostsuitableasbooster1)Shuntgenerator2)Separatelyexcitedgenerator3)Seriesgenerator4)Compoundgenerator

Q.19 Kirchhoffsvoltagelawappliestocircuitswith

1)nonlinearelementsonly2)linear,nonlinear,activeandpassiveelements3)linear,nonlinear,active,passive,timevaryingaswellsastimeinvariantelements4)linearelementsonly

Q.20 Thestatevariabledescriptionis

Thestatetransitionmatrixofthesystemwillbe

1)

2)

3)

4)

Q.21 Twotransistoranalogyisusedtoexplaintheoperationprincipleof1)MOSFET2)IGBT3)Thyristor4)BJT

Q.22 Theoperatorarotatesthevectorintheanticlockwisedirectionby1)90degree2)120degreebutclockwise3)180degree4)120degree

Q.23 Thevoltageatfarthestloadpointfromsupplyatoneendwillbetheleastalwaysfor1)interconnectedsystem2)Networksystem3)Ringsystem4)Radialsystem

Q.24 Intermsofcurrentdensity,BiotSavart'sLawisexpressedas____________(Note:Jandararevectorquantities.)1)(Jxar).dv/4r

2)(Jxar).dv/2r2

3)(Jxar).dv/4r2

4)(Jxar).dv/2r

Q.25 Potentiometersensitivitycanbeincreasedby1)Decreasingthecurrentinpotentiometer2)Decreasingthelengthofpotentiometerwire3)Usingregulatedsupplyinplaceofstandardcell.

4)Increasingthelengthofpotentiometerwire

Q.26 Theenergysignalisobtainedby

1)

2)

3)

4)

Q.27 Alinewhichconnectsadistributortothecustomer'sloadpointiscalledas1)line2)Distributor3)Feeder4)Servicemain

Q.28 Laplacetransformofrectangularpulseshowninfigis

1)

2)

3)

4)

Q.29 Intwowattmetermethodifpowerfactoris0.5,thenoneofthewattmeterwillread1)Zero2)W/23)W/34)W/2

Q.30 Skineffectoccurswhenaconductorcarriescurrentat_____frequencies.1)low2)verylow3)high

4)medium

Q.31 TheFouriertransformofanunitstepfunctionisgivenas

1)2)Rampfunction

3)

4)

Q.32 Thecommoncollectorbiasandemitterbiasareexampleof1)Voltageseriesfeedbackandcurrentseriesfeedbackrespectively2)Currentseriesfeedbackandcurrentshuntfeedbackrespectively3)Voltageseriesfeedback4)Voltageseriesfeedbackandvoltageshuntfeedback,respectively

Q.33 Piezoelectrictransducersare1)Passivetransducers2)Secondarytransducers3)Activetransducers4)Primarytransducer

Q.34 Thedailyloadpatternonaplantisasfollows:50MWfor20hours100MWfor4hours.Whatistheloadfactor?1)0.682)58.33)684)0.583

Q.35 TheFouriertransformoftheexponentialsignalejw0tis1)aseriesofimpulses.2)animpulse3)aconstant4)arectangulargate

Q.36 Theimpulseresponseofasystemis5.Itsstepresponseisequalto1)0.5(11e10t)2)10(1e10t)3)5(1e10t)4)0.55e10t

Q.37 Thevoltageacrossacomponentismeasuredas80Vr.m.s.andthecurrentthroughitis4Ar.m.s.Ifthecurrentleadsthevoltageby200whatistheapparentpowerinthecomponent?1)109VA2)301VA3)320VA4)116VA

Q.38 Ausefulpropertyoftheunitimpulseisthat

1)

2)

3)

4)

Q.39 InbodeplotoftheunityfeedbackcontrolsystemthevalueofphaseofG(j)atthegaincrossoverfrequencyis1250,thephasemarginofthesystemis1)552)1253)1254)55

Q.40 Electromechanicalenergyconversiondevicesare1)Grossmotiondevices2)Staticdevices3)Grossmotionandincrementaldevices4)Incrementaldevices

Q.41 Laplacetransformofthefunctionetsin5tis

1)

2)

3)

4)

Q.42 Introductionofhysteresisinacomparatormakesit1)Pulsegenerator2)Asquarewaveformgenerator3)Immunetofalsetriggeringcausedbynoisyinputsignal4)Pronetofalsetriggeringcausedbynoisyinputsignal

Q.43 AnRCdifferentiatorcircuitwithalower3dBcutofffrequencyof3.5KHzwillrespondtoastepinputwitharisetimeof1)Practicallynilvalue2)100ms3)10s4)100s

Q.44 OneofthereasonsofusingBundleconductorisfor1)transposingthelines2)bothmoreinductanceeffectandlesscoronaeffect3)moreinductanceeffect

4)lesscoronaeffect

Q.45 InhalfwaveSCR,powercontrolcircuit,ifthefiringangleis300,thenforonecompletecycleofoperation,theloadgetspowerfor1)1500

2)600

3)300

4)3330

Q.46 Thepurposeofaparallelcircuitresonanceistomagnify1)frequency2)voltage3)current4)power

Q.47 Inductionrelaysareusedwithquantities.1)d.c.2)Bothacandd.c.3)a.c.4)HVDC

Q.48 Theopenlooptransferfunctionofunityfeedbackcontrolsystemisgivenby

IfthegainKisincreasedtoinfinitythenthedampingratiowilltendstobecome1)12)1/3)Infinite4)0

Q.49 InducedCurrentactstoproduceanopposingfluxaccordingtowhichofthefollowinglaws:1)BiotSavartslaw2)Lenzslaw3)Ampereslaw4)Faradayslaw

Q.50 Atwostageamplifiercomposedofanactivehighpassfilterandanactivelowpassfilterforms:1)anotchfilter2)anactivebandpassfilter3)anactivebandstopfilter4)ahighgainamplifierwithnonetfiltration

Q.51 TransferfunctionisdefinedasLaplacetransformoftheoutputtotheLaplacetransformofinputwith1)initialconditiont=02)Initialconditiont=3)initialconditiont0

Q.52 Asinglephasehalfwaveconverterwithfreewheelingdiodeisdrivingaseparatelyexciteddcmotorat900rpmandisachievedwith60firingangle.Ifthesamemotorisfedthrough

singlephasesemiconverterwithfiringangle60,motorwillrunataspeed1)1800rpm2)1500rpm3)1200rpm4)900rpm

Q.53 Inanytransformer,ifPibetheironlossandPcubethecopperlossonfullload,whichofthefollowingconditionhastobesatisfiedtoobtainmaximumefficiencyat.1)Pcu=9/16Pi2)Pcu=Pi3)Pcu=4/3Pi4)Pcu=16/9Pi

Q.54 Thep.f.ofatransformerhavingloadispoordueto1)Lowprimarywindingresistance2)Opencircuitedsecondary3)noloadcurrent4)Magnetizingreactanceofthetransformer

Q.55 IncomparisonwithpowerMOSFET,BJTshas1)higherswitchinglossesbutlowerconductionloss2)higherswitchinglossesandhigherconductionloss3)lowerswitchinglossesbuthigherconductionloss4)lowerswitchinglossesandlowerconductionloss

Q.56 Thecontinuoustimesystemdescribedbyis1)noncausal,nonlinearandtimeinvariant2)Noncausal,linearandtimeinvariant3)Causal,nonlinearandtimevarying4)Causal,linearandtimevarying

Q.57 Positiveandnegativesequencenetworkfortransmissionlineis1)notsame2)same3)Negativeandzerosequencenetworksaresame4)Positiveandzerosequencenetworksaresame

Q.58 Thedeepbarrotorondoublecagerotorofaninductionmotorareused1)Toimproveefficiency2)Toreducerotorcoreloss3)Toincreasepullouttorque4)Toincreasestartingtorque

Q.59 Iftheimpulseresponseisdefinedas[h(t)=1,for0tTsotherwiseitiszero],thenitis1)Quantizer2)Zeroorderholdcircuit3)Sampler4)SecondorderHoldcircuit

Q.60 Piezometerisusedtomeasure1)Pressureinpipesandchannel

2)Pressuredifferencebetweentwopoints3)Veryhighpressure4)Verylowpressure

Q.61 ElectromagneticWavesareusedin__________.1)RadarOnly2)Radar3)Radio4)TV

Q.62 Adiodewhichistobeusedinachopperhasswitchingspecificationsasdi/dt=20A/sandreverserecoverytimetrr=5s.Expectedpeakreversecurrentis1)141.422)100A3)70.71A4)44.72A

Q.63 Whichinstrumentisnotaffectedbystraymagneticfields?1)Hotwiretype2)Movingironrepulsiontype3)Movingcoiltype4)Movingironattractiontype

Q.64 Inaninvertingsummercircuitusingopamp,DCvoltagesof+1V,2Vand+2Vare,respectivelyappliedtotheinputthrough10k,20kand50kresistors.Itthefeedbackresistancewere50k,theoutputvoltagewouldthenbe1)+2V2)+3V3)2V4)3V

Q.65 Thevoltagegainofanamplifierdecreasesat20dB/decadeabove100kHz.Ifthemidbandfrequencygainis80dB,whatisthevalueofvoltagegainat2MHz?1)52dB2)54dB3)64dB4)60dB

Q.66 Anunderexcitedsynchronousmotorbehavesas.1)Aresister2)Aninductor3)Acapacitor4)aandb

Q.67 DeterminethePlugSettingMultiplier(P.S.M)ofa5ampereovercurrentrelayhavingacurrentsettingof125%connectedtosupplycircuitthrougha400/5currenttransformerwhenthecircuitcarriesafaultcurrentof4000amp.1)82)63)74)10

Q.68 Fortheshiftingifx(Z)=Z{x(n)}andinitialconditionforx(0)arezerothetimeshiftingis1)Z{x(nm)}=ZnX(z)2)Z{x(nm)}=ZmX(z)3)Z{x(nm)}=ZmX(z)4)Z{x(nm)}=ZnX(z)

Q.69 Ifasinusoidalwavehasfrequencyof50Hzwith30Ar.m.s.currentwhichofthefollowingequationrepresentsthiswave?1)42.42sin314t2)30sin50t3)84.84sin25t4)60sin25t

Q.70 Athreephasealternatorwitharatingof10MVA,33kVhasitsbaseresistanceof15ohm/phase.Determinebaseimpedance.ChoosebasevoltageandbaseMVAequaltothesamegivenforalternatorrating.1)163ohm2)1633ohm3)107ohm4)108.9ohm

Q.71 A20bitaddressbussupports1)20,000memoryaddresses2)10,48,576memoryaddresses3)20,97,152memoryaddresses4)1,00,000memoryaddresses

Q.72 11.Athreephase,10MVA,11kVgeneratorhas10%subtransientreactance.Athreephaseshortoccursatitsterminal.Thefaultcurrentwillbe.1)6249kA2)6249A3)5200A4)5249A

Q.73 Theelectricalentityinductancecanbecomparedtothemechanicalentity1)Energy2)Torque3)Impulse4)inertia

Q.74 Inasinglephasefullconverter,ifandarefiringandextinctionanglesrespectivelythentheloadcurrentis1)discontinuousif()=2)discontinuousif()>3)discontinuousif()

3)V1constant4)V1*fconstant

Q.76 TheprincipleofoperationofaVMOSdeviceisasimilartothatof1)JunctionFET2)Insulatedgatebipolartransistor3)EnhancementMOSFET4)DepletionMOSFET

Q.77 Twoammetershavingfullscalereadingof1mAand10mAareconnectedinparallel.Ifthereadingofthetwoammetersare0.5mAand2.5mArespectively.Ratiooftheinternalresistanceofammetersis1)10:12)1:103)5:14)1:5

Q.78 PWMswitchingschemesusedinsinglephaseinverter1)reducesthetotalharmonicdistortionwithmodestfiltering2)minimisestheloadonthedcside3)increasesthelifeofthebatteries4)Reducesloworderharmonicsandincreaseshighorderharmonics

Q.79 Innerfilamentreactanceishigherthanouterfilamentreactanceofaconductorwhen1)trueforbothACandDC2)HVDCcurrentflows3)ACcurrentflows4)DCcurrentflows

Q.80 Whichofthefollowingsignaliscausal1)(1/2)nu(n+3)2)u(n+2)u(n2)3)sintu(t)4)e2tu(t2)

Q.81 anoutputpulsewidthof400s.Ifitwerefedwith11triggerpulseswithsuccessivetriggerpulsesseparatedby10s,theoutputpulsewidthwouldbe1)400s2)100s3)200s4)500s

Q.82 Asinglephasesemiconverterisoperatingincontinuousconductionmode.Averagevalueoftheoutputvoltageis

1)

2)

3)

4)

Q.83 Howarethecapacitorandresistorarrangedwithinatypicalsinglepolehighpasscircuit?1)Thecapacitorisinseriesandtheresistorisinparallelwiththeinput.2)Thecapacitorandresistorarebothinserieswiththeinput.3)Theresistorisinseriesandthecapacitorisinparallelwiththeinput4)Thecapacitorandresistorarebothinparallelwiththeinput.

Q.84 Swingbuswouldgenerallybeabusinanetworkwhichisa1)Voltagecontrolledbus2)PQbus3)PVbus4)Anybus

Q.85 InanautotransformerthevoltageratioisV1/V2whereV1>V2.thefractionofpowertransferredinductivelyis1)V2/V12)(V1V2)/V13)(V1V2)/(V1+V2)4)V1/(V1+V2)

Q.86 Theacarmaturewindingofanalternatoroperatesat.thefieldwindingvoltage1)Thesamevoltageas2)Muchlesservoltagethan3)Muchhighervoltagethan4)Halfthevoltageof

Q.87 Asteppermotoris1)atwophasemotor2)dcmotor3)amultiphasemotor4)asinglephaseacmotor

Q.88 Avoltagesourceof100voltsisconnectedinserieswiththreeresistorsR1=10,R2=10,R3=20.AloadisplacedinparallelwithR3.DeterminetheTheveninvoltage(VTH)theloadwould"see."1)25Volts2)50Volts3)10Volts4)100Volts

Q.89 Twosequencesx1(n)andx2(n)arerelatedbyx2(n)=x1(n).Inthezdomain,theirROCsare1)Same2)Reciprocalofeachother3)Negativeofeachother

4)Complementsofeachother

Q.90 AdeltaconnectedinductionmotoristobeoperatedinV/fcontrolisfedbyathreephasevoltagesourceinverter.Duringthestartthisinductionmotordriverequires1)autotransformer2)deltastarstarter3)stardeltastarter4)DOLstarter

Q.91 Thestageofpipelineoperationinwhichinstructionsareretrievedfromthememoryiscalled1)Accumulate2)Fetch3)Execute4)Decode

Q.92 TheapproximateGMandPMforunitfeedbacksystemwithlooptransmittancee0.1s/sarerespectively1),0

2)0,

3)24db,840

4)

Q.93 Theaccuracyofa0100mVvoltmeteris+5%.Afullscalereadingof100mVmaybeduetoavoltageof1)110mVor90mV2)90mV3)100mV4)105mVor95mV

Q.94 NyquistplotofthelooptransferfunctionG(j)H(j)ofasystemenclosesthe(1,j0)point.Thegainmarginofthesystemis1)Graterthenzero2)Infinity3)Zero4)Lessthenzero

Q.95 Thepowerismeasuredintermsofdeciblesincaseof1)electronicequipment2)transformers3)currenttransformers4)autotransformers

Q.96 InAC.circuits,laminatedironisinvariablyusedinorderto1)reduceeddycurrentloss2)reducecircuitpermeability3)makeassemblycheapandeasier4)increaseheatradiation

Q.97 Whichoneofthefollowingstatementiscorrect?Aplantiscontrolledbyproporsanalcontroller.Ifatimedelayelementisintroduceinloop,its1)Phasemargindecreases

2)Phasemarginremainthesame3)Gainmarginincreases4)Phasemarginincreases

Q.98 InthesignalflowgraphgivenblowthegainC/Rwillbe

1)44/232)24/233)11/94)22/15

Q.99 thesystemrepresentedbytransferfunction

has1)4poleinthelefthalfofthesplane2)3poleinthelefthalfofthesplane3)3poleintherighthalfofthesplane4)2poleintherighthalfofthesplane

Q.100 InaYYsource/loadconfiguration,the1)phasecurrentandthelinecurrentareinphase,andbothare120outofphasewiththeloadcurrent2)phasecurrent,thelinecurrent,andtheloadcurrentare120outofphase3)linecurrentandtheloadcurrentareinphase,andbothareoutofphasewiththephasecurrent4)phasecurrent,thelinecurrent,andtheloadcurrentareallequalineachphase

Q.101 AccordingtoMaxwellsequation,whichofthefollowingiscorrect?(Note:Disavectorquantity.)1).D=v2)xD=v3).D=s4)xD=s

Q.102 Lineintegralofanelectricfieldaroundaclosedpathis1)Infinity2)Zero3)somefinitevalue4)Unity

Q.103 Whichofthefollowingamplifierclasssuffersmainlyfromtheproblemofcrossoverdistortion?1)ClassA2)ClassC3)ClassB

4)ClassAB

Q.104 Considerthefollowingstatements

i.Dy1andyd11transformercanoperateinparallelii.Yd1andYd11transformercanoperateinparalleliii.Yd1andDy1transformercanoperateinparalleliv.Yd1andYz1transformercanoperateinparallel

Usethecodebelowtoindicatecorrectstatement1)iionly2)iandivonly3)iiandiiionly4)iiiandivonly

Q.105 Theopenlooptransferfunctionofunitynegativefeedbacksystemisgivenby

fork>6thestabilitycriteriaoftheopenloopconfigurationandthecloseloopconfigurationofthesystemarerepresentedby1)unstable,unstable2)Stable,stable3)Stable,unstable4)unstable,stable

Q.106 Theelectricstressintheundergroundcableis1)Zeroattheconductoraswellasonthesheath2)Maximumattheconductorandminimumatthesheath3)Sameasconductorandsheath4)Minimumattheconductorandmaximumatthesheath

Q.107 ThetransconductancecurveofaJFETis1)Linear2)Hyperbolic3)Sinusoidal4)Parabolic

Q.108 A220Vsinglephasemeterhasaconstantloadcurrentof5Apassingthroughitfor2Hr,atunitypowerfactor.Ifthemeterdiscmakes1056revolutionsduringthisperiod,whatisthemeterconstantinrevolution/kWh?1)2402)4803)3604)120

Q.109 Thefollowingsignalisexpressedas

1)tu(t)+(t)12)tu(t)+u(t1)3)tu(t)u(t1)4)tu(t)(t1)u(t1)

Q.110 Forsinusoidalpulsewidthmodulationofaswitch,sinusoidalreferenceismodulatedwithatriangularhighfrequencycarriersignal.Ifzeroofthereferencesignalcoincideswiththezero/peakofthecarrierwave,thenthenumberofpulsesgeneratedineachhalfcycleare1)m/(m1)2)(m1)/m3)(m1)/(m1)4)1

Q.111 Transferfunctionofaphaseleadcompensatorisgivenby

wherea>1andT>0.Themaximumphaseshiftprovidedbysuchcompensatoris

1)

2)

3)

4)

Q.112 Theunitimpulseresponseofalineartimeinvariantsystemistheunitstepfunctionu(t).Fort>0,theresponseofthesystemtoanexcitation,eatu(t)a>0,willbe1)(1eat)2)(1eat)/a3)a(1eat)4)aeat

Q.113 Astringofseriesconnectedthyristorsistobeusedforanapplicationof6kVand1000Awithderatingfactor0.2.Iftheavailablethyristorsareofrating1000Vand200A,thenwhatshouldbethenumberofseriesandparallelconnectedthyristors1)7,8

2)7,63)8,74)8,6

Q.114 Mostdevicesareinterfacedtoabuswith1)Tristatedrivers2)pnpTransistors3)Resistors4)Totempoleoutputs

Q.115 Shuntreactorsareneeded1)toboostreceivingendvoltageunderlightloadcondition2)tobringdownreceivingendvoltageatlightloads3)tobringdownreceivingendvoltageunderheavyloads4)toboostreceivingendvoltageunderheavyloads

Q.116 DCmotorshouldbestoppedbyopeningthelineswitchandnotbyforcingthestarterhandletofirststudofstartingresistance1)Heavysparkingatthemiddleofresistance2)Heavysparkingoccursatthebrushes3)Heavysparkingoccursatthefirststudofstartingresistance4)BoththeHeavysparkingoccursatthefirststudofstartingresistanceHeavysparkingoccursatthebrushes

Q.117 Anidealvoltagesourcehas1)terminalvoltageinproportiontocurrent2)zerointernalresistance3)opencircuitvoltageequaltothevoltageonfullload4)terminalvoltageinproportiontoload

Q.118 Ferrantieffectiscausedfor1)Linecapacitance2)Linereactance3)Lineconductance4)Lineresistance

Q.119 InacapacitorstartmotorifC1isthecapacitancerequiredforbeststartingtorqueandC2isthecapacitancerequiredforbestrunningcharacteristicthen1)C1isequaltoC22)C1ismuchsmallerthanC23)C1ismuchlargerthanC24)C1approximatelyequaltoC2

Q.120 TheinertiaconstantHfora50Hz,100MVAhydroelectricgeneratoris4.0MJ/MVA.Howmuchkineticenergyisstoredintherotoratsynchronousspeed?1)82)23)254)400

Q.121 Inzbusbuildingalgorithm,anewbusisaddedtothepartialnetworkof'm'busandtheresultantbusimpedancematrixisofdimension

1)(m1)(m1)2)both(m1)(m1)and(m1)(m1)3)(m+1)(m+1)4)(m+1)(m1)

Q.122 TherearetwosemiconductordiodesAandB.Theirratingsare5.6Vand2V,respectively,then1)Bothofthemareavalanchediodes2)Aisavalanche,Biszener3)Bothofthemarezenerdiodes4)Aiszener,Bisavalanche

Q.123 Theregionofconvergenceoftheztransformofthesignal2nu(n)3nu(n1)1)isz>12)isz

appliedtotheverticaldeflectingplates,thebrightspotmoves1cmawayfromthecentre.Ifwiththesamesetting,a30voltacisappliedtotheverticaldeflectingplate,thenthepictureobservedonthescreenwouldbe1)Averticallineapproximately3cmlong2)Twospots2cmverticallyaboveeachother3)Aspotapproximately3cmawayfromthecentre4)Averticalline2cmlong

Q.129 A10kmlosslesslinehasareactanceof0.3ohm/km.TheABCDconstantsare1)A=1,B=j0.3,C=0,andD=12)A=1,B=0.3,C=0.3andD=13)A=1,B=0.3,C=0,andD=14)A=1,B=j3,C=0,andD=1

Q.130 Anelectriccarwithdcmotordriveisrunningataspeedof100km/hour.Driverofthecarreducesthepressureontheacceleratortoreducethespeedofthecarto80km/hour.Thisisacaseof1)regenerativebraking2)dynamicbraking3)reversemotoring4)countercurrentbraking

Q.131 Thefaultsareduetoopencircuit1)Symmetrical2)Series3)LG4)Shunt

Q.132 Themostaccuratetestforfrequencyresponserequires:1)afrequencygenerator2)amultimeter3)aspectrumanalyzer4)afilter

Q.133 Theunitimpulseresponseofalineartimeinvariantsecondordercontrolsystemg(t)=10e8tsin6t(t).Thenaturalfrequencyanddampingfactorofthesystemarerespectively1)6rad/sand0.82)10rad/sand0.63)6rad/sand0.64)10rad/sand0.8

Q.134 let

wherebisunknownconstant.Thesystemis1)unobservableforallthenonzerovaluesofb2)Observableforallthenonzerovaluesofb3)Observableforallthevalueofb4)Unobservableforallthevalueofb

Q.135 ThepartofarmatureelectriccircuitofadcmotorwhichtakeactivepartinEMFgenerationare

1)BothThecoilsidesinsidetheslotsandTheoverhangpartofthecoil2)thecommutatorsegment3)Thecoilsidesinsidetheslots4)Theoverhangpartofthecoil

Q.136 Inthehparametermodel,theinputandtheoutputsectionsaremodeledas1)Voltagesources2)Currentsources3)Inputsectionascurrentsourceandoutputsectionasvoltagesource4)Inputsectionasvoltagesourceandoutputsectionascurrentsource

Q.137 Whichofthetransistorconfigurationiscapableofprovidingbothvoltagesandcurrentgains?1)Commonemitter2)Commoncollector3)Bothcommonemitterandcommonbase4)Commonbase

Q.138 Accordingtosamplingtheorem,thesamplingfrequencyshouldbe1)Greaterthanthelowestsignalfrequency2)Lessthanhalfthehighestsignalfrequency3)Lessthanhalfthelowestsignalfrequency4)Greaterthantwicethehighestsignalfrequency

Q.139 InanacbridgethreeimpedancesareasfollowsZ1=200ohm

2)Weinsbridge3)Andersonsbridge4)Campbellbridge

Q.143 Avaryingmagneticfluxlinkingacoilisgivenby=Xt2.Ifattimet=3s,theemfinducedis9V,thenthevalueofXis1)1.5Wb.s2

2)0.66Wb.s2

3)1.5Wb.s2

4)0.66Wb.s2

Q.144 Autilityofferstwotariffsformonthlybilling

(i)Rs.2.5/unit(ii)Rs.200+Rs.1.75/unit

Atwhatconsumptionlevelistariff(i)preferable1)Below267units2)Lessthan30units3)Above267units4)Atalllevels

Q.145 Anamplifierwithopenloopinputresistanceof100khas20dBofvoltageseriesfeedback.Closedloopinputresistancewouldbe1)10k2)5k3)1000k4)2000k

Q.146 Merzpriceprotectionschemeistheonefrom1)Distanceprotection2)Overcurrentprotection3)DifferentialProtection4)Earthfaultprotection

Q.147 Thetransferfunctionofthesystemgivenbelowis

1)

2)

3)

4)

Q.148 Firingangleofathreephasesemiconverteris90.Toachievecontinuousmodeofconductionfreewheelingdiodeshouldconductfor1)302)903)04)60

Q.149 Thetimeconstantofthecapacitivecircuitisdefinedasthetimeduringwhichvoltage1)risesto38.6%ofitsfinalsteadyvalue2)fallsto36.8%ofitsfinalsteadyvalue3)risesto63.2%ofitsfinalsteadyvalue4)risestoitsfinalsteadyvalue

Q.150 Timeconstantofaninductivecircuit1)increaseswithdecreaseofinductanceandincreaseofresistance2)increaseswiththeincreaseofinductanceandtheincreaseofresistance3)increaseswithdecreaseofinductanceanddecreaseofresistance4)increaseswithincreaseofinductanceanddecreaseofresistance

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