NCTI INSTALLER TECHNICIAN QUESTIONS WITH CORRECT ANSWERS 2025

NCTI INSTALLER TECHNICIAN QUESTIONS
WITH CORRECT ANSWERS 2025
20TmilliamperesTisTtheTsameTasT________.T(Remember,T1TmilliampereT=T0.001Tampere.)T-
TCORRECTTANSWERT-0.02Tamperes




TheTorbitalTshellTthatThasTaTmaximumTelectronTcapacityTofT18TelectronsTisTtheT___________Tshell.T-
TCORRECTTANSWERT-Third




ATsemiconductorTmaterialT-TCORRECTTANSWERT-HasTfourTvalenceTelectrons.



TheTmajorTfactorTforTdeterminingTwhetherTaTparticularTelementTisTaTconductor,TaTsemiconductor,TorTanTins
ulatorTisT-TCORRECTTANSWERT-TheTnumberTofTelectronsTinTtheTvalenceTshell.



ElementsTthatTareTcalledTconductorsT-TCORRECTTANSWERT-HaveTveryTfewTvalenceTelectrons.



TheTtermTvoltageTnormallyTrefersTtoT-TCORRECTTANSWERT-
TheTmeasurementTofTtheTdifferenceTinTpotentialTbetweenTtwoTcharges.



TheTampereT-TCORRECTTANSWERT-IndicatesThowTmanyTcoulombsTpassTaTgivenTpointTduringT1Tsecond.



ElectricTcurrentTisTactuallyTproducedTbyT-TCORRECTTANSWERT-
TheTtransferTofTenergyTfromTvalenceTelectronTtoTvalenceTelectronTasTaTresultTofTappliedTcharges.



WhatTpreventsTtheTelectronsTthatTorbitTanTatom'sTnucleusTatThighTspeedsTfromTbreakingTawayTfromTtheTnu
cleusTdueTtoTcentrifugalTforce?T-TCORRECTTANSWERT-
TheTattractionTbetweenTtheTpositiveTnucleusTandTtheTnegativeTelectron.



5TkilovoltsTisTtheTsameTasT-TCORRECTTANSWERT-5TkV.



ToTcreateTanTelectromagnet,T-TCORRECTTANSWERT-
WrapTaTcoilTofTinsulatedTwireTaroundTanTironTbarTandTpassTanTelectricTcurrentTthroughTtheTwire.

,MagnetismT-TCORRECTTANSWERT-
WasTdiscoveredTwhenTtheTGreeksTnoticedTthatTmagnetiteTalwaysTalignedTitselfTinTaTnorthTandTsouthTdirecti
on.



InTaTmagneticTmaterial,T-TCORRECTTANSWERT-
WhereTonlyTsomeTofTtheTmagneticTdomainsTareTpointingTinTtheTsameTdirection,TtheTmagneticTfieldTisTweak
er.



TheTstrengthTofTanTelectromagneticTfieldTisT-TCORRECTTANSWERT-
DeterminedTbyTtheTmagnitudeTofTtheTmagnetomotiveTforceT(mmf).



TheTmagneticTfieldT-TCORRECTTANSWERT-
CreatedTbyTaTstraightTpieceTofTwireTisTweakerTthanTthatTcreatedTbyTformingTloopsTofTwire.



FluxTlinesT-TCORRECTTANSWERT-
AlwaysTcurveTaroundTthroughTtheTbodyTofTtheTmagnetTtoTformTcompleteTloops.



MagneticTpolesTthatTareT___________TwillT____________TeachTotherTwhenTthoseTpolesTareTnearTeachToth
er.T-TCORRECTTANSWERT-Alike,Trepel



ATpermanent-magnetTloudspeakerT-TCORRECTTANSWERT-
HasTaTconeTthatTmovesTbackTandTforthTinTrelationTtoTtheTvaryingTcurrentTofTtheToriginalTsound.



TheTleft-handTruleTforTelectromagnetismTinTaTwireTstatesTthatT-TCORRECTTANSWERT-
IfTyouTwrapTtheTfingersTofTyourTleftThandTaroundTtheTwireTwithTyourTthumbTpointingTinTtheTdirectionTofTthe
TcurrentTflow,TyourTfingersTwillTbeTwrappedTinTtheTdirectionTofTtheTmagneticTfield.




TheTrecordingTheadTofTaTtapeTrecorderTisTactuallyTa(an)T-TCORRECTTANSWERT-Electromagnet.



(-25)T+T(42)T+T(-62)T+T(20)T=T-TCORRECTTANSWERT--25



(-17)T-T(-34)T=T-TCORRECTTANSWERT-17

, (17)TxT(-19)T=T-TCORRECTTANSWERT--323



-49/-7T=T-TCORRECTTANSWERT-7



(20)T/T(-4)T+T(-2)TxT(-10)T-T(-2)TxT(7)T=T-TCORRECTTANSWERT-29



3T6/9T+T6T1/3T+T9T5/9T=T-TCORRECTTANSWERT-19T5/9



4/7TxT9T4/11T=T-TCORRECTTANSWERT-5T27/77



7T3/8TdividedTbyT7T1/4T=T-TCORRECTTANSWERT-1T1/58



13TXT0.123T=T-TCORRECTTANSWERT-0.99999



0.5349TdividedTbyT0.1420T=T-TCORRECTTANSWERT-3.7669014



WhichTofTtheTfollowingTisTaTtrueTaxiom?T-TCORRECTTANSWERT-
WhenTAT=TCTandTBT=TC,TthenTAT=TBTbecauseTbothTareTequalTtoTC,TwhichTsupportsTtheTaxiom:TQuantitiesTequ
alTtoTtheTsameTquantityTareTequalTtoTeachTother.



SimplifyTandTsolveTtheTequation:TIfTET=TIRTthenTwhatTisTtheTformulaTforTfindingTI?T-TCORRECTTANSWERT-E/R.



TheTsquareTofT7T=T_____.T-TCORRECTTANSWERT-49



TheTsquareTrootTofT81T=T_____.T-TCORRECTTANSWERT-9



0.00004T=T______TxT10TtoTtheTpowerTofT______.T-TCORRECTTANSWERT-4,T-5