Provisional Answer key - BSNL RECRUITMENT Answer: Vidisha ... Provisional Answer key. Options: a) only one independent variable केवल एक 〰㰊तं耀ט चर

EXAMSTARTTIME:15:00:00EXAMDURAITON:03:00:00

TOTALNOOFQUESTIONS:200

EXAMDATE:26092016EXAMNAME:BSNLOnlineExamination2016TOTALMARKS:200

Question1.PicktheSynonymfortheword"ENCOMPASSING"Options:a)surroundingb)incorporatingc)dealingd)acceptingCorrectAnswer:incorporatingQuestion2.AsentenceisgivenintheDirect/Indirectform.Outofthefouralternativessuggested,selecttheonewhichbestexpressesthesamesentenceintheIndirect/Directform:Theboywasveryhappyandsaidtohismother,"Doyouwantmetocomewithyou?"Options:a)Theboyhadbeenveryhappyandaskedhismotherifshewantedhimtocomewithher.b)Theboywasveryhappyandaskedhismotherifshewantshimtocomewithher.c)Theboywasveryhappyandsaidtohismotherifshewantshimtocomewithher.d)Theboywasveryhappyandaskedhismotherifshewantedhimtocomewithher.CorrectAnswer:Theboyhadbeenveryhappyandaskedhismotherifshewantedhimtocomewithher.Question3.Whichofthechoicesgivenbelowshouldreplacethephrasegiveninboldinthefollowingsentencetomakethesentencegrammaticallymeaningfulandcorrect.VarunwasoncloudnineafterhavingstoodfirstinhisclassOptions:a)inninthcloudb)onninecloudsc)acloudynined)nocorrectionrequiredCorrectAnswer:nocorrectionrequiredQuestion4.Changethefollowingsentencesintopassivevoice:AfterdrivingprofessorKumartothemuseumshedroppedhimathishotel.Options:a)AftershehaddrivenProfessorKumartothemuseumshehaddroppedhimathishotel.b)AftershewasdrivenProfessorKumartothemuseumshehaddroppedhimathishotel.c)Afterbeingdriventothemuseum,ProfessorKumarwasdroppedathishotel.d)ProfessorKumarwasbeingdrivendroppedathishotel.CorrectAnswer:Afterbeingdriventothemuseum,ProfessorKumarwasdroppedathishotel.Question5.Thefirsttwowordsarerelatedinaparticularmanner.Selectthewordfromgivenchoices,whichisrelatedtothirdoneinthesamemanner:LIGHT:BLIND::speechOptions:a)tongueb)dumbc)soundd)chatCorrectAnswer:dumbQuestion6.ChoosethewordwhichistheexactOPPOSITEofthegivenwords:ExecrableOptions:a)shockingb)laudablec)repulsived)unhappyCorrectAnswer:laudableQuestion7.Choosetheappropriatewordintheblankfromthegivenalternatives.Thefiremenwereableto________thefireinchurchstreet.Options:a)putoutb)putawayc)putofd)putinCorrectAnswer:putoutQuestion8.Choosethecorrectpluralofthefollowingword:Fish

Provisional Answer key

Options:a)Fliesb)Fishesc)Fishd)ManyFishCorrectAnswer:FishQuestion9.Choosetheword/groupofwordswhichissimilarinmeaningtotheword.InsipidOptions:a)Wetb)Dullc)Accidentald)PrivilegedCorrectAnswer:DullQuestion10.Fourpartsofasentencearegiven.Arrangethemintherightordertoproduceacorrectsentence

residentshavebeenplanting/theornamentaltreesoutside/theirhomesandinlawnsto/addbeautyandgivetheirplaceagrandlookP/Q/R/SOptions:a)QRSPb)SRQPc)PRQSd)PQRSCorrectAnswer:PQRSQuestion11.ThepresentMinisterforCommunication

Options:a)Shri.RaviShankarPrasadb)Shri.ArunJaitleyc)Shri.ManojSinhad)NoneoftheseCorrectAnswer:Shri.ManojSinhaQuestion12.WhatisthepresentLoksabhaConstituencyofSushmaSwaraj?

?Options:a)Ambalab)Delhic)Bellaryd)VidishaCorrectAnswer:VidishaQuestion13.Indiaisplanningtolaunchadedicatedsatelliteforwhichorganisation?

?Options:a)ASEANb)BRICSc)SAARCd)SCOCorrectAnswer:SAARCQuestion14.BeforebecomingPresidentofIndiaMr.PranabMukharjeewasworkingas


Options:a)DeputyChairmanPlanningCommissionb)HomeMinisterc)FinanceMinisterd)ExternalAffairMinisterCorrectAnswer:FinanceMinisterQuestion15.DecimalequivalentofBinaryNo.100is:

100?Options:a)100

b)1

c)4

d)16CorrectAnswer:4Question16.ThepHofHumanbloodisnormallyaround

Options:a)4.55.5

b)5.56.5

c)8.59

d)7.58CorrectAnswer:7.58Question17.WhichstateinIndiaproducesthelargestquantityofrubber?

Options:a)Karnatakab)Keralac)TamilNadud)MaharastraCorrectAnswer:KeralaQuestion18.WhichoneofthefollowingisamissilesystemdevelopedbyIndiathatcanhitatargetatadistanceofmorethan5000kilometers?

5000?Options:a)Arjunb)Akashc)AgniVVd)NagCorrectAnswer:AgniVVQuestion19.AnAgreementonCoastalandMaritimeShippinghasbeensignedbyIndiawithwhichofthefollowingSouthAsiancountriesforcommencementofcoastalshippingbetweenthetwocountries?

?Options:a)SriLankab)Maldivesc)Bangladeshd)Mauritius


CorrectAnswer:BangladeshQuestion20.WhichstateisboundbyBangladeshonthreesides?

?Options:a)Mizorarnb)Meghalayac)Tripurad)WestBengalCorrectAnswer:TripuraQuestion21.Therelation|3z|+|3+z|=5represents

|3z|+|3+z|=5?Options:a)Acircleb)Aparabolac)Anellipsed)AhyperbolaCorrectAnswer:AnellipseQuestion22.TheLaplacetransformofsin2tis

sin2tOptions:a)

b)

c)

d)

CorrectAnswer:

Question23.

Options:a)f(t)=sint

b)f(t)=etsint

c)f(t)=et

d)f(t)=1et

CorrectAnswer:f(t)=1et

Question24.Theequationx2+y2+2gx+2fy+crepresentsacirclehavingradius

x2+y2+2gx+2fy+c


Options:a)

b)

c)

d)

CorrectAnswer:

Question25.

Options:a)30degrees30b)60degrees60c)45degrees45d)zerodegreesCorrectAnswer:60degrees60Question26.FindthedistancebetweentwopointsA(3,4)andB(3,4)

A(3,4)B(3,4):Options:a)0

b)10

c)100

d)10CorrectAnswer:10Question27.

Options:a)

b)

c)

d)Inversenotexists


CorrectAnswer:

Question28.TheUnitymatrixisalsocalled

:Options:a)identitymatrixb)binarymatrixc)nullmatrix(null)d)NoneoftheseCorrectAnswer:identitymatrixQuestion29.Theresidueofzcos1/zatz=0is

z=0zcos1/z:Options:a)1/3

b)1/3

c)1/2

d)1/2CorrectAnswer:1/2Question30.Findthenetareabetweeny=sinxandthexaxisbetweenthevaluesx=0andx=2.

x=0x=2y=sinxxOptions:a)4

b)3

c)2

d)0CorrectAnswer:0Question31.Cramer'sruleisanexplicitformulaforthesolutionofasystemof

__________Options:a)nonlinearequationb)quadraticequationc)variableequationd)linearequationsCorrectAnswer:linearequationsQuestion32.Whichofthefollowingfunctionisaperiodicfunction

?Options:a)sinx

b)cosx

c)f(x)=constantf(x)=d)AlloftheseCorrectAnswer:AlloftheseQuestion33.Partialdifferentialequationinvolves


Options:a)onlyoneindependentvariable(onlyoneindependentvariable)b)onlytwoindependentvariable(onlytwoindependentvariable)c)twoormoreoneindependentvariable(twoormoreoneindependentvariable)d)noindependentvariable(noindependentvariable)CorrectAnswer:twoormoreoneindependentvariable(twoormoreoneindependentvariable)Question34.Theperimeterofthetrianglewhoseverticesare(1,0),(2,3)and(4,1)are()

(1,0),(2,3)(4,1),()Options:a)52+26

b)26+5

c)6+26

d)7+26CorrectAnswer:52+26Question35.

Options:a)m=8/3

b)m=8/3

c)m=3/8

d)m=3/8CorrectAnswer:m=3/8Question36.

Options:a)x=1,y=1

b)x1,y=1

c)x1,y1

d)noneCorrectAnswer:x1,y=1Question37.Theanglebetweenthepairofstraightlinesx22xy+y2=0

x22xy+y2=0/Options:a)45

b)30

c)120

d)90CorrectAnswer:90Question38.Incomplexnumbers,thevalueofi37=

i37Options:a)37i

b)i

c)i

d)37iCorrectAnswer:i


Question39.Thehalflifeperiodofaradioactiveelementis140days.After560days,1gofelementwillreduceto

1405601?Options:a)1/2g

b)1/4g

c)1/8g

d)1/16gCorrectAnswer:1/16gQuestion40.Inmajorityofinstrumentsdampingisprovidedby

:Options:a)fluidfrictionb)springc)eddycurrentsd)AlloftheseCorrectAnswer:AlloftheseQuestion41.whenmeasuringphaseanglebetweentwowavesusingaCRO,thetimebasegeneratorisconnectedto

CRO:Options:a)XPlateXb)YplateYc)bothXandYplatesXYd)neitherXnorYplatesXYCorrectAnswer:neitherXnorYplatesXYQuestion42.ElectronVoltisunitof

:Options:a)Currentb)Potentialc)Energyd)MagneticForceCorrectAnswer:PotentialQuestion43.ThedimensionalformulaofPlankconstantis

:Options:a)[MLT]

b)[MT1L2]

c)[MT2L2]

d)[MT2L2]CorrectAnswer:[MT1L2]Question44.TheTheorythatnotwoelectronsinanatomcanhaveidenticalvaluesofthefourquantumnumbersisknownas

___________


Options:a)Hund'sRuleb)Bohr'stheoryc)Autbau'sPrincipled)Pauli'sprincipleCorrectAnswer:Pauli'sprincipleQuestion45.Thebendingnatureiflightaroundthecornersofobstaclesiscalled

____________Options:a)Refractionb)Reflectionc)Diffractiond)NoneoftheseCorrectAnswer:DiffractionQuestion46.Thephenomenonusedintheopticalfiberis

:Options:a)Difractionb)Refractionc)TotalinternalReflectiond)PolarisationCorrectAnswer:TotalinternalReflectionQuestion47.CommonlyusedLaserinMB_Computerprintersis________

MB__________Options:a)HeNeGasHeNeb)Rubyc)Semiconductord)AlloftheseCorrectAnswer:SemiconductorQuestion48.Laserlightisintensebecause

:Options:a)ithasverylessnumberofPhotonsthatinphaseb)ithasverylessnumberofPhotonsthatarenotinphasec)ithasverylargenumberofPhotonsthatareinphased)ithasverylargenumberofPhotonsthatarenotinphaseCorrectAnswer:ithasverylargenumberofPhotonsthatareinphaseQuestion49.AnIsotopewithoutanyNeutronis


Options:a)Trituimb)Deuteriumc)Protiumd)NoneoftheseCorrectAnswer:ProtiumQuestion50.Inaclosedorganpipe____isformedendand_______isformedattheopenend

_________________Options:a)node,antinode,b)antinode,node,c)vibration,oscillation,d)oscillation,vibration,CorrectAnswer:node,antinode,Question51.Intensifyoflightisdueto

Options:a)superpositionoftwowavesb)Dopplereffectc)diffractiond)noneoftheseCorrectAnswer:diffractionQuestion52.Thefrequencyoftunningforkcanbedeterminedby

Options:a)magnetictapeb)modulatorc)sonometerd)reedinstrumentCorrectAnswer:magnetictapeQuestion53.Massandweight__________

Options:a)aresamequantitiesb)Aredifferentquantitiesc)Norelationbetweenthem.d)AlloftheseCorrectAnswer:AredifferentquantitiesQuestion54.ThephenomenonofbendingoflightatthesurfaceofseparationoftwomediahavingdifferentR.Iiscalled

...?


Options:a)DeflectionofLightb)ReflectionofLightc)RefractionofLightd)absorptionofLightCorrectAnswer:RefractionofLightQuestion55.ToconvertCelsius(Centigrade)toFahrenheit

?Options:a)multiplyby1.8andadd321.832b)subtract32anddivideby1.8321.8c)multiplyby32andadd1.8321.8d)subtract1.8anddivideby321.832CorrectAnswer:multiplyby1.8andadd321.832Question56.Theunitusedtomeasurethesupersonicspeedis

?Options:a)knotsb)Machc)Richterd)HertzCorrectAnswer:MachQuestion57.Theenergyrequiredtomove120Coulombthrough5Vis

1205VOptions:a)60J

b)600J

c)4.8J

d)24JCorrectAnswer:600JQuestion58.Thecurrentinaninductorchangesfrom0to200mAin4msandinducesavoltageof100mV.Thevalueofinductoris

4ms0200mA100mVOptions:a)2mH

b)0.5mH

c)8mH

d)4mHCorrectAnswer:2mHQuestion59.Whichofthefollowingisstatementsisincorrect?

?Options:a)TheunitofMagneticfieldisAmpere/m/.b)TheunitformagnetomotiveforceisAmpereturnsc)TheunitformagneticfluxdensityisWeberd)TheunitofpermeabilityisHenry/meter/


CorrectAnswer:TheunitformagneticfluxdensityisWeberQuestion60.Twelve6resistorsareusedasedgetoformacube.Theresistancebetweentwodiagonallyoppositecornersofthecubeis

6Options:a)5/6

b)6/5

c)5

d)6CorrectAnswer:5Question61.Resistanceofawireisrohms.Thewireisstretchedtodoubleitslength,anditsradiusishalfedthenitsresistanceinohmsis

rohm___Options:a)r/2

b)4r

c)8r

d)r/4CorrectAnswer:8rQuestion62.Themagnitudeoftheinducede.m.finaconductordependsonthe

___________Options:a)amountoffluxcutb)amountoffluxlinkagesc)rateofchangeoffluxlinkagesd)fluxdenityofthemagneticfieldCorrectAnswer:rateofchangeoffluxlinkagesQuestion63.Asinewavehasafrequencyof50hz.Itsangularfrequencyis..radian/second

50Hz____________/Options:a)50/b)50/2c)50d)100CorrectAnswer:100Question64.Theenergyrequiredtochargea10Fcapacitorto100Vis

10F:Options:a)0.10J

b)0.05J

c)5x109J

d)10x109JCorrectAnswer:0.05JQuestion65.Therelativepermeabilityofironisoftheorderof

Options:a)0

b)10+4

c)1

d)104

CorrectAnswer:10+4


Question66.Acurrentflowsinaconductorfromeasttowest.Thedirectionofmagneticfielsatapointabovetheconductoris

Options:a)towardnorthb)towardsouthc)towardeastd)towardwestCorrectAnswer:towardnorthQuestion67.CapacitanceofaCapacitor

Options:a)IncreaseswithincreaseinOverlappingAreaofPlates()b)Increaseswithincreaseinrelativepermittivityofthedielectricc)Increasewithdecreasesindistancebetwwentheplatesd)AlloftheseCorrectAnswer:AlloftheseQuestion68.TheEnergyprovidedbyIdealVoltageSourcewhentheLoadisOpenCircuit

Options:a)Zerob)Infinitec)Unityd)NotspecificCorrectAnswer:ZeroQuestion69.AtelectricBreakdown

Options:a)conductorbecomeinsulator,b)InsulatorbecomesConductor,c)Semiconductorbecomesconductor,d)Conductorbecomessuperconductor,CorrectAnswer:InsulatorbecomesConductor,Question70.Earthpotentialistakenas

Options:a)zerob)thatofsupplyc)infinited)noneoftheseCorrectAnswer:zeroQuestion71.InFleming'sLefthandrule,Thumbalwaysrepresentdirectionof

_________________


Options:a)currentflowb)inducedemfc)magneticfieldd)mechanicalforceCorrectAnswer:mechanicalforceQuestion72.Toconvertagalvanometerintovoltmeter,thevalueandtypeofconnectionoftheresistancetobeconnectedwithshouldbe

Options:a)lowandparallelb)highandparallelc)lowandseriesd)highandseriesCorrectAnswer:highandparallelQuestion73.A40Wtubelightisinparallelwitharoomheateronamainline.Whathappenswhenthelightisswitchedoff.

40WOptions:a)theheateroutputremainsthesameb)theheateroutputislargerc)theheateroutputissmallerd)noneCorrectAnswer:theheateroutputislargerQuestion74.TheBatterywillgetwarm,whenwetrytosendtoomuchcurrentthorughbattery.Thisismainlydueto

.......Options:a)Batterymanufacturingdefectb)DuetodefectofconnectedLoadc)InternalResistanceoftheBatteryd)NoneCorrectAnswer:InternalResistanceoftheBatteryQuestion75.MOSFETis_____________controlleddevice

MOSFET______________Options:a)Voltageb)Currentc)VoltageandCurrentbothd)CannotbecontrolledCorrectAnswer:VoltageQuestion76.Improperbiasingofatransistorleadsto

(biasing)


Options:a)excessiveheatproductionatcollectorterminalb)distortioninoutputsignalc)faultylocationoftheloadlined)heavyloadingoftheemitterterminalCorrectAnswer:distortioninoutputsignalQuestion77.ThemaximumnumberofelectronswhichtheMshelllofanatomcancontainis

,MshellOptions:a)32

b)8

c)18

d)50CorrectAnswer:18Question78.Currentflowinasemiconductordependsonthephenomenonof

Options:a)driftb)diffusionc)recombinationd)AlloftheseCorrectAnswer:AlloftheseQuestion79.EarthbreakerCircuituses

Options:a)PolarizedRelayb)ReedRelayc)LatchingRelayd)MachineToolRelayCorrectAnswer:LatchingRelayQuestion80.Theconductivityofthesemiconductor

Options:a)doesnotdependontemperatureb)decreaseswithriseintemperaturec)increaseswithriseintemperatured)firstincreasesandthendecreaseswithriseintemperatureCorrectAnswer:doesnotdependontemperatureQuestion81.Halleffectcanbeusedtomeasure

_____________


Options:a)electricfieldintensityb)magneticfieldintensityc)carrierconcentrationd)noneoftheseCorrectAnswer:carrierconcentrationQuestion82.Potentialdifferencehastheunitof

:Options:a)chargeb)powerc)energyd)noneCorrectAnswer:noneQuestion83.Iftherelativepermitivityofthemediumincreases,theelectricintensityatapointduetoagivencharge

Options:a)decreasesb)increasesc)remainsthesamed)noneCorrectAnswer:decreasesQuestion84.Thestabilizationfactor"Sico"ofFixedbiascircuitis

"Sico"Options:a)Sico=(1+)

b)Sico=1

c)Sico=

d)NoneCorrectAnswer:Sico=(1+)Question85.Themoststablesinewaveoscillatorwithmostsimplecircuitis

Options:a)Colpitsb)Armstrongc)PhaseshiftCircuitd)CrystalCorrectAnswer:CrystalQuestion86.Inaforwardbiasedpndiode,theinjectedholecurrentinthenjunctionisproportionto(WhereQisthetotalstoredcharge)

pn,n(Q)_________


Options:a)1/Q

b)Q

c)SquarerootofQQd)CuberootofQQCorrectAnswer:QQuestion87.ThemaindrawbackofaJFETisits

JFET__________Options:a)highinputimpedanceb)lowinputimpedancec)highernoised)lowergainCorrectAnswer:lowergainQuestion88.Whichofthefollowingcircuitsisusedasacomparator

Options:a)Astablemultivibratorb)Bistablemultivibratorc)Monostablemultivibratord)SchmitttriggerCorrectAnswer:SchmitttriggerQuestion89.Thesamplingunitinanautomaticvoltageregulatorisgenerallyintheformof

:_________Options:a)aZenerdiodeb)apotentiometerc)atransistord)asilicondiodeCorrectAnswer:apotentiometerQuestion90.Ifatransistorisoperatedinsuchawaythatoutputcurrentflowfor60degreeoftheinputsignal,theitis

,600,:Options:a)ClassAoperationAb)ClassBoperationBc)ClassCoperationCd)NoneoftheseCorrectAnswer:ClassCoperationCQuestion91.Themaximumspeedofelectronicswitchcanbe

:


Options:a)104operationspersecond104b)102operationspersecond102c)103operationspersecond103d)109operationspersecond109CorrectAnswer:109operationspersecond109Question92.Whenacrystaldiodeisusedasarectifier,themostimportantconsiderationis

,Options:a)forwardcharacteristicb)dopinglevelc)reversecharacteristicd)PICratingPICCorrectAnswer:PICratingPICQuestion93.ForafourinputORgatethenumberofinputcondition,thatwillproduceHIGHoutputare

4ORHIGH?Options:a)1

b)3

c)15

d)0CorrectAnswer:15Question94.Theminimumnumberof2to1multiplexersrequiredtorealizea4to1multiplexersis

4to12to1?Options:a)1

b)2

c)3

d)4CorrectAnswer:3Question95.TTLcircuitswithactivepulluparepreferredbecauseoftheirsuitabilityfor

TTL___________Options:a)wireAndOperationb)busoperatedsystemc)wiredlogicoperationd)resonabledissipationandspeedofoperationCorrectAnswer:resonabledissipationandspeedofoperationQuestion96.TheresolutionofannbitD/Aconverterwithamaximuminputof5Vis5mV.Thevalueofnis

nD/A5V5mVn:Options:a)8

b)9

c)10

d)11CorrectAnswer:10


Question97.(1111.11)2equals

(1111.11)2Options:a)1.0110

b)0.7510

c)15.310

d)15.7510CorrectAnswer:15.7510Question98.TriggeringactioncanbeobtainedinaJKFFbyjoining

JKFF,Options:a)JandKpointstogroundJKb)JpointtoXandKtoXJXKX_c)JandKpointstopositivesupplyJKd)JpointtopositivesupplyJCorrectAnswer:JpointtoXandKtoXJXKX_Question99.MasterslaveconfigurationisusedinFFto

FFOptions:a)increaseitsclockingrateb)reducespowerdissipationc)eliminatesracearoundconditiond)improvesitsreliabilityCorrectAnswer:eliminatesracearoundconditionQuestion100.Thenumberofcomparisionscarriedoutina4bitflashtypeA/Dconverteris

4bitA/D(comparisions)Options:a)16

b)15

c)4

d)NoneoftheseCorrectAnswer:15Question101.DepthofanArithmeticCircuitis

(Arithmetic)Options:a)NumberofGatesinitb)Lengthofthelongestpathinitc)SumofNumberofGatesandLengthd)NoneoftheseCorrectAnswer:LengthofthelongestpathinitQuestion102.ResolutionofAnalogtoDigitalConverterrangingfrom5Vto+5Vwith8Bitscodingis

5V+5V8(Resolution)


Options:a)3.9V

b)0.39V

c)3.9mV

d)39mVCorrectAnswer:39mVQuestion103.Whichlogicgateissimilartothefunctionoftwoparallelswitches?

?Options:a)AND

b)NAND

c)OR

d)NORCorrectAnswer:ORQuestion104.Thebaseorradixofahexadecimalsystemis:

?Options:a)2

b)3

c)8

d)16CorrectAnswer:16Question105.

Options:a)NAND

b)AND

c)Ex.OR

d)NoneoftheseCorrectAnswer:NoneoftheseQuestion106.Thenumberof4:1MUXrequiredtomake64:1MUXis

64:14:1?Options:a)16

b)64

c)20

d)21CorrectAnswer:21Question107.Hexadecimalnumbersystemis

____________


Options:a)anobsoletesystemnolongerinuseb)widelyusedinanalyzingandprogrammingmicroprocessorsc)usedincalculatorsonlyd)noneoftheseCorrectAnswer:anobsoletesystemnolongerinuseQuestion108.AmasterslaveJKflipflopconsistsof

JK_____________Options:a)acascadeoftwoSRflipflopsSRb)aJKflipflopconnectedinserieswithaDflipflopDJKc)twoSRflipflopsconnectedinparallelSRd)anSRflipflopandaTflipflopSRTCorrectAnswer:anSRflipflopandaTflipflopSRTQuestion109.Thelogicwhichhasthehighestspeedis

Options:a)DTL

b)RTL

c)ECL

d)TTLCorrectAnswer:ECLQuestion110.Anstageripplecounterwillcountupto

n:Options:a)2n

b)2n1

c)n

d)2n1CorrectAnswer:2nQuestion111.wattmeterisaninstrumentwhichmeasures

_______Options:a)instantanouespowerb)averagepowerc)apparentpowerd)reactivepowerCorrectAnswer:averagepowerQuestion112.Abalanced3phasestarconnectedloaddrawspowerfroma440Vsupply.ThetwowattmetersconnectedindicateW1=4.2kWandW2=0.8kW.CalculatethecurrentinthecircuitinAmpers

3440VW1=4.2kWW2=0.8kWOptions:a)10.731

b)10.137

c)10.271

d)10.371


CorrectAnswer:10.137Question113.Inductionmotorrotoralwaysrotateataspeed_____thansynchronousspeed

_______Options:a)sameb)greaterc)lessd)infiniteCorrectAnswer:lessQuestion114.AnRLCseriescircuitissaidtobeinductiveif

RLCOptions:a)L>1/C

b)L=1/C

c)L1/CQuestion115.TheBatteryCapacityisexpressedin

_____Options:a)wattsb)ampsc)voltsd)AmpereHoursCorrectAnswer:AmpereHoursQuestion116.Inabalanced3phase400Vcircuit,thelinecurrentis115.5A.Whenthepowerismeasuredbytwowattmetermethod,onemeterreads40kWandtheotherzero.whatisthepowerfactoroftheload

3400V,115.5A40kWOptions:a)1

b)0.5

c)0.6

d)0.8CorrectAnswer:0.5Question117.Inasynchronousmachinewhentherotorspeedbecomesmorethanthesynchronousspeedduringhunting,thedampingbarsdevelop

,Options:a)synchronousmotortorqueb)d.c.motortorqued.c.c)inductionmotortorqued)inductiongeneratortorqueCorrectAnswer:inductiongeneratortorqueQuestion118.Intheanalysisofavacuumtubecircuit,wegenerallyuse______________Theorem

_______________


Options:a)superpositionb)Norton'sc)Thevenin'sd)ReciprocityCorrectAnswer:Thevenin'sQuestion119.Adccircuitcanberepresentedbyaninternalvoltagesourceof50vwithanoutputresistanceof100kohm.Inordertoachieve99percentaccuracyforvoltagemeasurementacrossitsterminals,thevoltagemeasuringdeviceshouldhave

dc50v100Kohm99,Options:a)aresistanceofatleast10Mohm10Mohmb)aresistanceof100Kohm10Kohmc)aresistanceofatleast10ohm10ohmd)noneoftheseCorrectAnswer:aresistanceofatleast10Mohm10MohmQuestion120.Awheatstonebridgehasratioofarmsof1000ohmand100ohm,thestandardresistancearmsconsists4decaderesistanceboxesof1000,100,10,1ohmsteps.Themaximumandminimumvaluesofunknownresistancewhichcanbedeterminedwiththissetupis

1000ohm100ohm1000,100,10,1Options:a)111100ohm,1ohm

b)11110ohm,10ohm

c)111100ohm,10ohm

d)noneoftheseCorrectAnswer:111100ohm,10ohmQuestion121.Dummycoilinad.c.generatorisprovidedtoreduce___________

______________Options:a)mechanichalunbalanceb)hysteresislossesc)armaturereactiond)tendencyofreversalCorrectAnswer:mechanichalunbalanceQuestion122.Ifthefluxofadcmotorapproachedzero_______________

_____________Options:a)itsspeedwillapproachzerob)themotorwilltendtorunatinfinitespeedc)themotorwillstopd)itsspeedwillremainunchangedCorrectAnswer:themotorwilltendtorunatinfinitespeedQuestion123.Aluminiumisnotusedaswindingwireforthearmatureofd.c.machinebecause


Options:a)Aluminiumhaslowresistivityb)OflargewindingspacerequiredbyAluminiumconductorc)OflowthermalconductivityofAluminiumd)OfhighcostofAluminiumCorrectAnswer:OfhighcostofAluminiumQuestion124.Thedatatransferrateofamodemismeasuredin

?Options:a)bytespersecond.b)baudratec)bitspersecond.d)hertzCorrectAnswer:bitspersecond.Question125.CompandingisusedinPCMto

PCM:Options:a)ReduceBandwidthb)ReducePowerc)IncreaseS/NratioS/Nd)GetalmostuniformS/NratioS/NCorrectAnswer:GetalmostuniformS/NratioS/NQuestion126.Ifthevalueofaresistorcreatingthermalnoiseisdoubled,thenoisegeneratedis

____Options:a)halvedb)doubledc)unchangedd)slightlyunchangedCorrectAnswer:unchangedQuestion127.InPCMsystemEncoder

PCMOptions:a)assignesquantizedvaluesb)changesquantizedvaluetobinaryvaluec)changesquantizedvaluetonumericalvalued)ChangesnumericalvaluestobinaryvaluesCorrectAnswer:changesquantizedvaluetobinaryvalueQuestion128.IntermediatefrequencyusedincommercialMediumWaveSuperHeterodynereceiveris

:


Options:a)455KHz

b)10.7MHz

c)38.9MHz

d)1450KHzCorrectAnswer:455KHzQuestion129.Whatpartof192.168.10.51istheNetworkID,assumingadefaultsubnetmask?

192.168.10.51ID?Options:a)192

b)192.168

c)192.168.10

d)192.168.10.51CorrectAnswer:192.168.10Question130.Inaradioreceiver,whichofthefollowingstagesdoesnotneedalignment___________

?Options:a)TRFstageTRFb)IFstageIFc)antennainputstaged)audiostageCorrectAnswer:audiostageQuestion131.Thestandardvalueofsamplingrateofaudiofrequencysignalis______________

___________Options:a)4000samplespersecond4000b)8000samplespersecond8000c)10000samplespersecond10000d)16000samplespersecond16000CorrectAnswer:8000samplespersecond8000Question132.Introposphericscatterlinks,itisnecessarytohave_______________

______________Options:a)hightransmittingpowerb)parabolicantennareflectorsc)lownoisereceiversd)alloftheseCorrectAnswer:alloftheseQuestion133.Aschemeinwhichseveralchannelsareinterleavedandthentransmittedtogetherisknownas

,Options:a)Frequencydivisionmultiplexingb)TDMc)agroupd)asupergroup


CorrectAnswer:agroupQuestion134.Tunneldiodecanalsobeusedas____powermicrowaveoscillators

_________________Options:a)Highb)Lowc)Mediumd)irrespectiveofCorrectAnswer:LowQuestion135.Theparametricamplifierhas____gainand____noisefigure

_____________Options:a)Low,high,b)low,low,c)high,high,d)high,low,CorrectAnswer:low,low,Question136.ThemaximumspeedatwhichthedatacanbetransmittedoneachchannelofastandardPCMstreamis

PCM,:Options:a)64kbps

b)128kbps

c)2Mbps

d)4MbpsCorrectAnswer:4MbpsQuestion137.Alosslesstransmissionlineisterminatedinashortcircuit.Theminimumpossiblelengthofthelineforwhichitappearsasashortcircuitatitsinputterminalsis

?Options:a)/2

b)/4

c)

d)2CorrectAnswer:/2Question138.Inductanceandcapacitanceperunitlengthofalosslesstransmissionlineare250nH/mand0.1nF/mrespectively.Thevelocityofthewavepropagationandcharacteristicimpedanceofthetransmissionlinearerespectively

250nH/m0.1nF/mOptions:a)2X108m/s,100

b)3X108m/s,50

c)2X108m/s,50

d)3X108m/s,100CorrectAnswer:2X108m/s,50Question139.TheCharacteristicImpedanceofalowpassfilterinattenuationBandis

:


Options:a)0

b)Realvaluec)Complexquantityd)PurelyimaginaryCorrectAnswer:PurelyimaginaryQuestion140.ThezparametersoftheshownTnetworkimFiguregivenby

TZ:

Options:a)13,8,8,20

b)13,20,8,8,

c)20,13,8,8

d)8,8,13,20CorrectAnswer:13,8,8,20Question141.Anantennaisdesiredtooperateonafrequencyof40MHzwhosequalityfactoris50.Thebandwidthofantennais

5040MHz:Options:a)20kHz

b)80kHz

c)800kHz

d)8kHzCorrectAnswer:800kHzQuestion142.LANworksonwhichofthefollowingLayers?

LANOptions:a)Physicalb)Datalinkc)DatalinkandNetworkd)PhysicalandDatalinkCorrectAnswer:PhysicalandDatalinkQuestion143.OnaPowergridtheLoadisgenrerally

:Options:a)Capacitiveb)Resistivec)Inductived)AlloftheseCorrectAnswer:Inductive


Question144.Atwoportnetworkisreciprocalif_________

______________Options:a)Y11=Y22

b)Y12=Y21

c)Y12=Y11

d)Y22=Y21CorrectAnswer:Y12=Y21Question145.Indeltaconnectedcircuit,whenoneresistorisopen,thepower

,,Options:a)remainssameb)reducedby1/31/3c)reducedby1/21/2d)increasedby1/21/2CorrectAnswer:remainssameQuestion146.Formfactorisdefinedas

:Options:a)rmsvalue/peakvaluerms/b)peakvalue/rmsvalue/c)rmsvalue/averagevaluerms/d)peakvalue/averagevalue/CorrectAnswer:peakvalue/rmsvalue/Question147.Magnitudeoftheimpedance4+3jisgivenby

4+3j:Options:a)7ohms7b)1ohms1c)12ohms12d)5ohms5CorrectAnswer:12ohms12Question148.TworesistancesR1andR2whenconnectedinseriesgiveanequivalentresistanceof9ohmsand2ohmswhenconnectedinparallel.ThevalueofR1&R2are

R1R292R1R2Options:a)3ohms&9ohms39b)3ohms&6ohms36c)6ohms&1.5ohms61.5d)9ohms&1ohms91CorrectAnswer:6ohms&1.5ohms61.5Question149.InaseriesRCcircuit,thecurrent____thevoltagebyanangle____degrees.

RC,,________,__________


Options:a)lags,of45,45b)lags,of0,0c)leads,between0and90,090d)leads,of90,90CorrectAnswer:lags,of0,0Question150.ToincreaseQfactorofacoil,thewireshouldbe

QOptions:a)longb)thinc)thickd)longandthinCorrectAnswer:thickQuestion151.TwoammetersAandBboth010Ahaveinternalresistanceof1and0.5respectively.Theyareconnectedinparallel.Iftotalcurrentis15A,then

010A10.515AOptions:a)IA=IB=7.5A

b)IA=5A,IB=10A

c)IA=10A,IB=5A

d)IA=9A,IB=6ACorrectAnswer:IA=5A,IB=10AQuestion152.TheinputimpedanceofCROisabout

Options:a)0

b)10

c)100

d)1MCorrectAnswer:1MQuestion153.Tomeasuredielectriclossyouwoulduse

?Options:a)Andersonbridgeb)KelvinBridgec)Scheringbridged)Maxwell'sbridgeCorrectAnswer:ScheringbridgeQuestion154.Theaccuratevoltmetermusthavearesistanceof

:


Options:a)Verylowvalueb)lowvaluec)Veryhighvalued)noneoftheseCorrectAnswer:VeryhighvalueQuestion155.Avoltmeterhavingsensitivityof1000ohm/vreadsits150Vscalewhenconnectedacrossunknownresistanceinserieswithamilliamterneglecttheresistanceofmiliammeterwhenmilliammterreads5mAthemillimeterwillbe

1000/150V5mAOptions:a)0.1333

b)0.1566

c)0.0333

d)0.0111CorrectAnswer:0.1333Question156.Photoconductivecellisusedfor

_______________Options:a)highfrequencyapplicationb)mediumfrequencyapplicationc)lowfrequencyapplicationd)alloftheseCorrectAnswer:lowfrequencyapplicationQuestion157.AaquadagisusedinaCROtocollect__________

CRO______________Options:a)secondaryemissionelectronsb)primaryelectronsc)bothprimaryandsecondaryemissionelectronsd)noneoftheseCorrectAnswer:secondaryemissionelectronsQuestion158.Theeffectiveresistanceofacoilsathighfrequenciesismorethanitsd.c.resistanceonaccountof__________

_______________Options:a)skineffectsb)proximitiyeffectsc)eddycurrentlosesd)AlloftheseCorrectAnswer:AlloftheseQuestion159.Atriangularwaveshapeisobtained______________

______________


Options:a)bydifferentiatingasinewaveb)byintegratingasinewavec)byintegratingasquarewaved)bydifferencingasquarewaveCorrectAnswer:byintegratingasquarewaveQuestion160.Ameggerisadeviceusedformeasuring

_______Options:a)Extremelyhighcurrentb)Extremelyhighvoltagec)Extremelyhighresistanced)ExtremelylowresistanceCorrectAnswer:ExtremelylowresistanceQuestion161.Qmeterworksontheprincipleof

Q____________Options:a)Seriesresonantcircuitb)Parallelresonantcircuitc)Resistivecircuitd)NoneoftheseCorrectAnswer:ParallelresonantcircuitQuestion162.Murray,VarleyandFisherlooptestsareusedfor

,___________Options:a)shortcircuitfaultincablesb)opencircuitfaultinthecablesc)shortcircuitandgroundfaultincablesd)opencircuitandgroundfaultincablesCorrectAnswer:shortcircuitandgroundfaultincablesQuestion163.

Options:a)Lagnetworkb)Leadnetworkc)Lagleadnetworkd)ProportionalcontrollerCorrectAnswer:Lagnetwork


Question164.

Options:a)

b)0

c)1

d)CorrectAnswer:Question165.ForaunityfeedbackcontrolsystemtheopenlooptransferfunctionG(s)=10(s+2)/s2(s+1)findaccelerationerrorconstant

G(s)=10(s+2)/s2(s+1)Options:a)10

b)20

c)

d)0CorrectAnswer:20Question166.ThenumberofsignchangesinthefirstcoloumnoftheRouth'sarraydenotes

:Options:a)thenumberofzerosofthesysteminRighthalfofsplanesb)thenumberofzerosofthesysteminlefthalfofsplanesc)thenumberofopenlooppolesinRighthalfofsplanesd)thenumberofrootsofcharacteristicequationinRighthalfofsplanesCorrectAnswer:thenumberofrootsofcharacteristicequationinRighthalfofsplanesQuestion167.Thenoisefigureofanamplifieris3dB.Itsnoisetemperaturewillbeabout

3dBOptions:a)145K

b)290K

c)580K

d)870KCorrectAnswer:870KQuestion168.Theresponseofsecondordersystemisoscillatorywhendampingratiois______________

_____________,Options:a)1

b)0

c)>1

d)0

Options:a)overdampedb)underdampedc)criticallydampedd)noneoftheseCorrectAnswer:underdampedQuestion170.AsystemhavingG(s)=1/(s+2)(s+5)andH(s)=10/sisoftype

G(s)=1/(s+2)(s+5)H(s)=10/s,_______________Options:a)N=0

b)N=1

c)N=2

d)N=3CorrectAnswer:N=1Question171.Inanopenloopcontrolsystem

Options:a)outputsignalhasnocontrolontheinputsignalectontheinputsignalb)Noneofthevariableshaveanyeffc)Systemvariableseffecttheoutputsignald)AlloftheseCorrectAnswer:SystemvariableseffecttheoutputsignalQuestion172.Laplacetransformofaunityfunctionis

Options:a)1/s

b)1/s2

c)1/s3

d)ZeroCorrectAnswer:ZeroQuestion173.Theforceofamechanicalbodyinmotionis

Options:a)MassXdisplacementxb)MassXvelocityxc)MassXaccelerationxd)IndependentofmassCorrectAnswer:IndependentofmassQuestion174.Hydraulictorquetransmissionsystemisanalogof___

__________


Options:a)RCparallelcircuitRCb)Motorgeneratorsetc)Amplidynesetd)NoneoftheseCorrectAnswer:NoneoftheseQuestion175.ThedisadvantageoftheRouth'scriteriaare

Options:a)Itprovidesinformationaboutabsolutestabilityonlyb)Itassumesthatthesystemcharacteristicequationisavailableinthepolynomialformc)Allofthesed)NoneoftheseCorrectAnswer:AlloftheseQuestion176.Inan8085Psystem,theRSTinstructionwillcauseaninterrupt

8085RST()Options:a)onlyifaninterruptserviceroutineisnotbeingexecutedb)onlyifabitintheinterruptmaskismade00c)onlyifinterruptshavebeenenabledbyanEIinstructionEId)NoneoftheseCorrectAnswer:onlyifinterruptshavebeenenabledbyanEIinstructionEIQuestion177.Whichoneofthefollowingisnotavectoredintrerrupt

:Options:a)TRAP

b)RST7.5

c)RST3

d)INTRCorrectAnswer:INTRQuestion178.Pseudoinstructionsarebasically

Pseudo__________Options:a)FalseInstructionsb)InstructionsthatareignoredbyMicroprocessorc)AssemblerDirectivesd)InstructionsthataretraetedlikecommentsCorrectAnswer:AssemblerDirectivesQuestion179.Whichofthefollowingstatementistrue

?


Options:a)Thegroupofmachinecycleiscalledstateb)Amachinecycleconsistsofoneormoreinstructioncyclesc)Aninstructioncycleismadeupofmachinecyclesandamachinecycleismadeupofnumberofstatesd)AlloftheseCorrectAnswer:AninstructioncycleismadeupofmachinecyclesandamachinecycleismadeupofnumberofstatesQuestion180.Acompileris

Options:a)acombinationofcomputerhardwareb)aprogramwhichtranslatesfromonehighlevellanguagetoanotherlevelc)aprogramwhichtranslatesonehighlevellanguagetomachinelanguaged)noneoftheseCorrectAnswer:aprogramwhichtranslatesonehighlevellanguagetomachinelanguageQuestion181.WhichofthefollowingdiodescanbeusesasVoltageRegulator?

Options:a)NormalPNDiodePNb)ZenerDiodec)ReversePNDiodePNd)NoneoftheseCorrectAnswer:ZenerDiodeQuestion182.Inaoscilloscole,thesensitivitycanbeincreasedby_____________

CRO______________Options:a)decreasingthevalueofacceleratingvoltageEab)increasingthevalueofacceleratingvoltageEac)increasingtheseparationbetweenthedeflectingplatesd)noneoftheseCorrectAnswer:decreasingthevalueofacceleratingvoltageEaQuestion183.ASCIIstandsfor_______

ASCIIOptions:a)Americanstandardcomputerforinformationinterchangeb)Americanstandardcodeforinternationalinterchangec)Americanstandardcodeforinformationinterchanged)AmericanstandardcomputerforinternationalinterchangeCorrectAnswer:AmericanstandardcodeforinformationinterchangeQuestion184.Whichofthefollowingisanonmaskableinterrupt?


Options:a)RST7.5

b)RST6.5

c)TRAP

d)RST5.5CorrectAnswer:TRAPQuestion185.WhatwillbethecontentofacculmulatoraftertheexecutionofXRAAinstruction?

'XRAA'?Options:a)1

b)0

c)Dependsuponthecurrentcontentoftheaccumulatord)noneoftheseCorrectAnswer:0Question186.Thebasicbuildingblockofsequentiallogiccircuitis

:Options:a)gateb)flipflopc)ALUd)controlunitCorrectAnswer:gateQuestion187.The8085MPUrequiresapowersupplyof

8085MPU_____Options:a)+5Vsingle+5Vb)+5Vdual+5Vc)+12Vsingle+12Vd)+12Vdual+12VCorrectAnswer:+12Vdual+12VQuestion188.Cachememoryisinsertedbetween

________Options:a)thememoryandCPUCPUb)thesecondarystorageandmainmemoryc)thearchivalstorageandsecondarystoraged)thesecondarystorageandCPUCPUCorrectAnswer:thesecondarystorageandCPUCPUQuestion189.URLstandsfor

URL?Options:a)uniquereferencelabel

b)uniformreferencelabel

c)uniformresourcelocator

d)uniqueresourcelocatorCorrectAnswer:uniformresourcelocator


Question190.MODEMisusedfor

:Options:a)Modulatorattransmittingsideanddetectorattherecevingsideb)whichdealswithanalogsignalsandshowdigitalinformation,c)Modulatoratrecevingsideanddetectoratthetransmittingsided)adevicewhichdealswithdigitalsignalsonlyCorrectAnswer:whichdealswithanalogsignalsandshowdigitalinformation,Question191.PersonalComputergenrallyshouldnotbeusedfor

:___________Options:a)OnlineShoppingb)TicketBookingc)Serverd)InternetCorrectAnswer:ServerQuestion192.LINUXis

LINUX:Options:a)OpenSourceOSb)ClosedSourceOSc)ItisnotaOSd)NoneoftheseCorrectAnswer:OpenSourceOSQuestion193.Thepermanentmemeoryis

:Options:a)ROM

b)RAM

c)Both1&2

d)NoneoftheseCorrectAnswer:ROMQuestion194.WhatisfullformofALU?

ALU?Options:a)Allowedlogicunitb)AsciilogicunitASCIIc)Arithmeticlogicunitd)ArithmeticleastunitCorrectAnswer:ArithmeticlogicunitQuestion195.DatalinklayerinIEEEstandardisdividedintotwosublayersof

IEEE__________


Options:a)LLCandMACLLCMACb)LLCandIPLLCIPc)MACandIPMACIPd)nosublayersareindatalinklayerCorrectAnswer:LLCandMACLLCMACQuestion196.apassiveelementinacircuitisonewhich

Options:a)suppliesenergyb)receivesenergyc)bothsuppliesandreceivesenergyd)noneoftheseCorrectAnswer:receivesenergyQuestion197.Assemblylanguageis

(assembly)Options:a)LowLevelLanguageb)Portablec)HighLevelLanguaged)NoneofTheseCorrectAnswer:LowLevelLanguageQuestion198.Thebasicelementsofamicroprocessorare_______

"_______________"Options:a)ALU,controlunit,b)ALU,memory,c)ALU,memory,I/Odevice,,I/Od)ALU,controlunit,memory,,CorrectAnswer:ALU,controlunit,Question199.Whichofthefollowingaremostdifficult?

?Options:a)UsingofMSwindowsb)ProgramminginUNIXUNIXc)ProgramminginAssemblylanguaged)ProgramminginmachinelanguageCorrectAnswer:ProgramminginmachinelanguageQuestion200.ThefollowingisnotcorrectinfilenamesMSDOS

MSDOS?


Options:a)itcanbealphanumericb)thechcaracterscanbemorethaneight8c)thelimitofcharactersiseight8d)canhavespecialcharacterslike~,$,@~,$,@CorrectAnswer:thechcaracterscanbemorethaneight8


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Provisional Answer key - BSNL RECRUITMENT Answer: Vidisha ... Provisional Answer key. Options: a) only one independent variable केवल एक 〰㰊तं耀ט चर