THE ELECTRICAL NCCER TEST EXAM
WITH VERIFIED SOLUTIONS
Which nArticle nof nthe nNEC ncovers ngrounding? n- ncorrect nanswers n-article n250
Which nof nthe nfollowing nis na n90 ndegree, nexplosion nproof nfitting? n- ncorrect
nanswers n-GUAL
What nis na ndropout nplate? n- ncorrect nanswers n-Metal nplate nwith na ncurved nsurface
nfor ncable nto nfollow nas nit npasses nfrom nthe ntray
All nof nthe nfollowing nare ncommon nservice nvoltages nin nthe nUnited nStates
nEXCEPT: n- ncorrect nanswers n-372/575 n3-PHASE, n4-WIRE
What ndoes na nGFCI nbreaker ndo? n- ncorrect nanswers n-Opens na ncircuit nto nprevent
noperation nof nan nelectrical ndevice
,What nwill nhappen nwhen none nor nmore ncoils nin na nwinding nare ngrounded? n-
ncorrect nanswers n-The nmotor nwill nautomatically nblow nfuses
Eight nincandescent nlighting nfixtures nare nto nbe ninstalled. nEach nfixture nis n120-
nvolts, nwith na n200-watt nlamp. nWhat nis nthe ntotal nconnected nload? n- ncorrect
nanswers n-13.3 namps
The nmust nbe ngrounded nin na nbussed ngutter nif nused nas nthe nmain nservice
nequipment. n- ncorrect nanswers n-Neutral nbusbar
When nwall nmounting ncable ntray, nensure nthat n- ncorrect nanswers n-The nbuilding
nstructure nis nstrong nenough nto nsupport nthe ntray nsystem
The npurpose nof nsealing ncable nends nwhen nreels nof ncable nare nin nstorage nis n-
ncorrect nanswers n-To nkeep nmoisture nfrom ncreeping nin
The nouter ncovering non nliguid-tight nflexible nmetal nconduit nis nused nfor n- ncorrect
nanswers n-A nmoisture nseal
A ngood nelectrical nconnection nshould n- ncorrect nanswers n-Be nmechanically nand
nelectrically nsecure
The nsymbol nnormally nused nfor nduplex n- ncorrect nanswers n-Circle nwith ntwo
nparallel nlines ndrawb nthrough nit
Disconnecting nmeans nare ncovered nin n- ncorrect nanswers n-NEC nSection n110-22
In nrelation nto nswitches, nthe nterm nthrow nrefers nto nthe n- ncorrect nanswers n-Number
nof ninternal noperations nthat na nswitch ncan nperform
A n3-phase, n4-wire, n480v nservice nrequires n______ ncurrent ntransformer(s) n- ncorrect
nanswers n-3
Services nconductors nand nequipment nare ncovered nin n- ncorrect nanswers n-NEC
nArticle n230
The nNEC nrequired nthat nall nreceptacles ninstalled non n25 namp nand n20 namp
nbranch ncircuits nbe n______ nreceptacles n- ncorrect nanswers n-Grounding
A ntransformer nwith nthe nprimary nof n400 nturns nand na nsecondary nof n300 nturns nhas
na n_____ n- ncorrect nanswers n-Step-down nturns nratio nof n4:3
The ncircular nmil nis nbased non nthe n- ncorrect nanswers n-Cross-sectional narea nof nthe
nwire
, Of nthe ntermination nclasses nlisted nbelow, n____ nis nthe nonly none nthat nprovides na
nseal nagainst nexternal nelements. n- ncorrect nanswers n-Class n1
Unless notherwise nnoted. nthe ncalculations nin nAC ncircuits n_____ nvalues. n- ncorrect
nanswers n-Rms
When nthe ncoil nturns nare nincreased nthe n_____ n- ncorrect nanswers n-Induced
nvoltage nis nincreased
As nthe ntemperature nsurrounding na nself-regulating nheating ncable nrises, nthe n____ n-
ncorrect nanswers n-Resistance nof nthe npolymeric ncore nincreases
The nmotor ntype nthat nhas nthe nhighest nstarting ntorque nis nthe n____ nmotor. n-
ncorrect nanswers n-Capacitor-start
For na ngiven nnumber nof npoles, nthe n____ ndetermines nthe nspeed nof nan nAC nmotor.
n- ncorrect nanswers n-Frequency
Both ninduction nand nsynchronous nmotors noperate non nthe nprinciple nof na nrotating
n____ nfield n- ncorrect nanswers n-Magnetic
A ntransformer nhas n200 nturns nin nthe nprimary, n150 nturns nin nthe nsecondary, nand
n120VAC napplied nto nthe nprimary. nThe nvoltage nacross nthe nsecondary nis: n- ncorrect
nanswers n-90Volts
The noutput ncapacity nof na nmotor nis nrated nin n- ncorrect nanswers n-Horsepower
The nsynchronous nspeed nat nwhich na npole, n60 nHz ninduction nmotor noperates nis
nrpm. n- ncorrect nanswers n-1,800
The nsine nof n0 ndegree nis n- ncorrect nanswers n-0
Meters nused nin nAC ncircuits nindicate nthe n- ncorrect nanswers n-Effective
The ncomponent nlabeled n7 nin nfigure n1 nis na(n) n- ncorrect nanswers n-End nseal
In nan nAC ncircuit ncontaining nresistance nonly n_____ nwill nflow nif nthe nresistance nis
n10 nohms nand nthe nvoltage nis n120V. n- ncorrect nanswers n-12A
The n_____ nrotor ntypes nare ngenerally nrugged. n- ncorrect nanswers n-Squirrel ncage
Proofs ntests nare nmade nat_ nof nthe noriginal nfactory nvoltage. n- ncorrect nanswers n-
60%
Which ntype nof nheating ncable ncannot nbe ncut nand nterminated nin nthe nfield? n-
ncorrect nanswers n-Mineral ninsulated
WITH VERIFIED SOLUTIONS
Which nArticle nof nthe nNEC ncovers ngrounding? n- ncorrect nanswers n-article n250
Which nof nthe nfollowing nis na n90 ndegree, nexplosion nproof nfitting? n- ncorrect
nanswers n-GUAL
What nis na ndropout nplate? n- ncorrect nanswers n-Metal nplate nwith na ncurved nsurface
nfor ncable nto nfollow nas nit npasses nfrom nthe ntray
All nof nthe nfollowing nare ncommon nservice nvoltages nin nthe nUnited nStates
nEXCEPT: n- ncorrect nanswers n-372/575 n3-PHASE, n4-WIRE
What ndoes na nGFCI nbreaker ndo? n- ncorrect nanswers n-Opens na ncircuit nto nprevent
noperation nof nan nelectrical ndevice
,What nwill nhappen nwhen none nor nmore ncoils nin na nwinding nare ngrounded? n-
ncorrect nanswers n-The nmotor nwill nautomatically nblow nfuses
Eight nincandescent nlighting nfixtures nare nto nbe ninstalled. nEach nfixture nis n120-
nvolts, nwith na n200-watt nlamp. nWhat nis nthe ntotal nconnected nload? n- ncorrect
nanswers n-13.3 namps
The nmust nbe ngrounded nin na nbussed ngutter nif nused nas nthe nmain nservice
nequipment. n- ncorrect nanswers n-Neutral nbusbar
When nwall nmounting ncable ntray, nensure nthat n- ncorrect nanswers n-The nbuilding
nstructure nis nstrong nenough nto nsupport nthe ntray nsystem
The npurpose nof nsealing ncable nends nwhen nreels nof ncable nare nin nstorage nis n-
ncorrect nanswers n-To nkeep nmoisture nfrom ncreeping nin
The nouter ncovering non nliguid-tight nflexible nmetal nconduit nis nused nfor n- ncorrect
nanswers n-A nmoisture nseal
A ngood nelectrical nconnection nshould n- ncorrect nanswers n-Be nmechanically nand
nelectrically nsecure
The nsymbol nnormally nused nfor nduplex n- ncorrect nanswers n-Circle nwith ntwo
nparallel nlines ndrawb nthrough nit
Disconnecting nmeans nare ncovered nin n- ncorrect nanswers n-NEC nSection n110-22
In nrelation nto nswitches, nthe nterm nthrow nrefers nto nthe n- ncorrect nanswers n-Number
nof ninternal noperations nthat na nswitch ncan nperform
A n3-phase, n4-wire, n480v nservice nrequires n______ ncurrent ntransformer(s) n- ncorrect
nanswers n-3
Services nconductors nand nequipment nare ncovered nin n- ncorrect nanswers n-NEC
nArticle n230
The nNEC nrequired nthat nall nreceptacles ninstalled non n25 namp nand n20 namp
nbranch ncircuits nbe n______ nreceptacles n- ncorrect nanswers n-Grounding
A ntransformer nwith nthe nprimary nof n400 nturns nand na nsecondary nof n300 nturns nhas
na n_____ n- ncorrect nanswers n-Step-down nturns nratio nof n4:3
The ncircular nmil nis nbased non nthe n- ncorrect nanswers n-Cross-sectional narea nof nthe
nwire
, Of nthe ntermination nclasses nlisted nbelow, n____ nis nthe nonly none nthat nprovides na
nseal nagainst nexternal nelements. n- ncorrect nanswers n-Class n1
Unless notherwise nnoted. nthe ncalculations nin nAC ncircuits n_____ nvalues. n- ncorrect
nanswers n-Rms
When nthe ncoil nturns nare nincreased nthe n_____ n- ncorrect nanswers n-Induced
nvoltage nis nincreased
As nthe ntemperature nsurrounding na nself-regulating nheating ncable nrises, nthe n____ n-
ncorrect nanswers n-Resistance nof nthe npolymeric ncore nincreases
The nmotor ntype nthat nhas nthe nhighest nstarting ntorque nis nthe n____ nmotor. n-
ncorrect nanswers n-Capacitor-start
For na ngiven nnumber nof npoles, nthe n____ ndetermines nthe nspeed nof nan nAC nmotor.
n- ncorrect nanswers n-Frequency
Both ninduction nand nsynchronous nmotors noperate non nthe nprinciple nof na nrotating
n____ nfield n- ncorrect nanswers n-Magnetic
A ntransformer nhas n200 nturns nin nthe nprimary, n150 nturns nin nthe nsecondary, nand
n120VAC napplied nto nthe nprimary. nThe nvoltage nacross nthe nsecondary nis: n- ncorrect
nanswers n-90Volts
The noutput ncapacity nof na nmotor nis nrated nin n- ncorrect nanswers n-Horsepower
The nsynchronous nspeed nat nwhich na npole, n60 nHz ninduction nmotor noperates nis
nrpm. n- ncorrect nanswers n-1,800
The nsine nof n0 ndegree nis n- ncorrect nanswers n-0
Meters nused nin nAC ncircuits nindicate nthe n- ncorrect nanswers n-Effective
The ncomponent nlabeled n7 nin nfigure n1 nis na(n) n- ncorrect nanswers n-End nseal
In nan nAC ncircuit ncontaining nresistance nonly n_____ nwill nflow nif nthe nresistance nis
n10 nohms nand nthe nvoltage nis n120V. n- ncorrect nanswers n-12A
The n_____ nrotor ntypes nare ngenerally nrugged. n- ncorrect nanswers n-Squirrel ncage
Proofs ntests nare nmade nat_ nof nthe noriginal nfactory nvoltage. n- ncorrect nanswers n-
60%
Which ntype nof nheating ncable ncannot nbe ncut nand nterminated nin nthe nfield? n-
ncorrect nanswers n-Mineral ninsulated
