Exam (elaborations)
CHAPTER 13 REVIEW QUESTIONS & WORKBOOK WITH ACTUAL ANSWERS
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CHAPTER 13 REVIEW QUESTIONS & WORKBOOK WITH ACTUAL ANSWERS
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CHAPTER 13 REVIEW QUESTIONS &WORKBOOK WITH ACTUAL ANSWERS
What bbis bbthe bbpower bbused bbby bban bbelectric bbmotor bbthat bbdraws bba bbcurrent bbof
bb15A bbfrom bba bb240V bbpower bbsource? bb- bbAnswer bbP bb= bbI bbx bbE
P bb= bb15A bbx bb240V
P bb= bb3600W
To bbcalculate bban bbalternating bbcurrent's bbroot bbmeans bbsquare bbvoltage, bbmultiply
bbthe bbmaximum bbvoltage bbvalue bbby bb_____. bb- bbAnswer bb0.707
example... bbV(rms) bb= bbV(max) bbx bb0.707
Since bbresistance bblimits bbthe bbflow bbof bbcurrent, bbit bbcauses bb_____. bb- bbAnswer bbA
bbvoltage bbdrop
When bbvoltage bband bbcurrent bbreach bbtheir bbpositive bband bbnegative bbpeaks bbat
bbthe bbsame bbtime bbin bba bbalternating bbcurrent bbcycle, bbthey bbare bbsaid bbto bbbe
bb_____. bb- bbAnswer bbIn bbphase
Inductive bbreactance bbaffects bbthe bbtrue bbpower bbof bba bbcircuit bbbecause bbit bbcauses
bb_____. bb- bbAnswer bbCurrent bbto bblag bbbehind bbvoltage
Capacitive bbreactance bbaffects bbthe bbtrue bbpower bbof bba bbcircuit bbbecause bbit
bbcauses bb____. bb- bbAnswer bbVoltage bbto bblag bbbehind bbcurrent
Which bbof bbthe bbfollowing bbvalues bbis bbalways bbcalculated bbin bbvolt-amperes? bb-
bbAnswer bbApparent bbpower
Electricity bbdistributed bbin bbNorth bbAmerica bbhas bba bbfrequency bbof bb_____ bbHz. bb-
bbAnswer bb60
The bbmost bbwidely bbused bbpolyphase bbpower bbarrangement bbused bbin bbHVACR bbis
bb_____ bbpower. bb- bbAnswer bbThree-phase
The bbpower bbsource bbthat bbsupplies bbpower bbto bba bbClass bb2 bbcircuit bbcannot bbhave
bban bboutput bbgreater bbthan bb_____. bb- bbAnswer bb30V bband bb1000VA
Electrical bbwire bbsize bbis bbspecified bbby bbthe bb_____. bb- bbAnswer bbAmerican bbWire
bbGage bb(AWG)
, A bbform bbof bbcircuit bbprotection bbthat bbonly bbregulates bbcurrent bbflow bbby bbchanging
bbits bbresistance bbbased bbon bbheat bbis bba bb_____. bb- bbAnswer bbThermistor
A bbform bbof bbcircuit bbprotection bbthat bbopens bbthe bbcircuit bbif bbit bbdetects bban
bbimbalance bbbetween bbthe bbungrounded bband bbgrounded bbwires bbof bba bbcircuit bbis
bba bb_____. bb- bbAnswer bbGround bbfault bbcircuit bbinterrupter bb(GFCI)
A bbform bbof bbcircuit bbprotection bbthat bbemploys bba bbsolenoid bbto bbopen bbthe bbcircuit
bbif bbcurrent bbexceeds bbpredetermined bblevel bbis bba bb_____. bb- bbAnswer bbCircuit
bbbreaker
A bbform bbof bbcircuit bbprotection bbthat bbcontains bba bbmetal bbconductor bbthat bbmelts
bbto bbopen bba bbcircuit bbwhen bbcurrent bbis bbtoo bbhigh bbis bba bb_____. bb- bbAnswer
bbFuse
A bbGFCI bbopens bbwhen bbas bblittle bbas bb_____ bbamperes bbleaks bbout bbof bba bbcircuit
bband bbinto bbthe bbgrounding bbcircuit. bb- bbAnswer bb0.006 bb(6 bbmilliamperes)
An bbungrounded bbconductor bbis bbalso bbsometimes bbcalled bba bb_____. bb- bbAnswer
bbHot bbwire
Joining bball bbthe bbmetallic bbcomponents bbof bban bbelectrical bbsystem, bbeven bbthose
bbthat bbdo bbnot bbnormally bbcarry bbcurrent, bbis bbdefined bbas bb_____. bb- bbAnswer
bbBonding
The bbground bbwire bbin bban bbHVACR bbelectrical bbcircuit bbis bbalways bb_____. bb-
bbAnswer bbGreen
Which bbelectrical bbproblem bbinvolves bbextremely bbhigh bbcurrent bbgoing bbaround bban
bbelectrical bbload? bb- bbAnswer bbShort bbcircuit
Which bbelectrical bbproblem bbinvolves bba bbcircuit's bbapplied bbvoltage bbbeing bbreduced
bbalong bba bbconductor bbto bba bblevel bbthat bbis bbtoo bblow bbfor bbsafe bbuse bbon bbthe
bbelectrical bbload? bb- bbAnswer bbVoltage bbdrop
Which bbelectrical bbproblem bbcreates bba bbdangerous bbelectrical bbshock bbsituation
bbthat bbinvolves bba bbdevice bbor bbungrounded bbmetal bbbecoming bbelectrically bbhot bbor
bblive. bb- bbAnswer bbGround bbfault
Which bbelectrical bbproblem bbinvolves bbovercurrent bbdue bbto bban bbincorrect bbpower
bbsupply, bbequipment bbfailure, bbtoo bbmany bbloads bbconnected, bbor
bbelectromechanical bboperating bbunder bbstrain? bb- bbAnswer bbOverload
Which bbelectrical bbproblem bbis bba bbbreak bbin bba bbcurrent's bbpath bbresulting bbfrom bba
bbbad bbelectrical bbconnection, bbbroken bbwire, bbopen bbfuse bbor bbcircuit bbbreaker, bbor
bba bbburned bbout bbcomponent? bb- bbAnswer bbOpen bbcircuit
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