Electrical NCCER test with solutions
In |a |guardrail |system, |the |guardrails |can |be |made |of |any |of |the |following |EXCEPT: |- |correct |answer |-
ropebanding
If |the |potential |across |the |circuit |is |48 |volts |and |the |current |is |5 |amps |the |resistance |of |the |circuit |is:
|- |correct |answer |-9.6 |ohms
A |UL |listed |rod |type |grounding |electrode |must |have |a |minimum |length |of: |- |correct |answer |-8'
What |is |the |MINIMUM |number |of |overload |sensing |units |required |for |all |three |phase |motors? |- |
correct |answer |-3
In |a |circuit |of |pure |capacitance, |the |current |leads |the |voltage |by |an |angle |of: |- |correct |answer |-90-
degrees
The |standard |unit |for |a |measuring |the |cross-sectional |area |of |a |wire |is |the: |- |correct |answer |-circular |
mil
The |drawing |scale |is |MOST |likely |to |be |found |in |which |of |the |following |drawing |locations? |- |correct |
answer |-the |drawing |little |block
The |length |of |a |bare |copper |conductor |in |a |ground |ring |MUST |be |buried |no |less |than |2.5' |below |
grade |and |with |a |length |of |at |least: |- |correct |answer |-20 |ft.
When |installing |heating |cables |for |anti-icing |systems, |cable |patters |should |be |in |a: |- |correct |answer |-
Serpentine
An |auxiliary |holding |contact |(seal-in) |on |a |NEMA |starter |is |indicated |by |the |terminal |marking: |- |
correct |answer |-A1 |& |A2
, The |neutral |bus |in |a |sub |panel: |- |correct |answer |-is |bonded
The |PEAK |voltage |in |a |nominal |120/208 |VAC |system |is: |- |correct |answer |-208V.
THWN |conductors |have |an |outer |jacket |made |of: |- |correct |answer |-nylon
What |is |shown |on |a |sectional |drawing? |- |correct |answer |-Cutaway |view |of |a |building
Who |is |allowed |to |remove |another |electrician's |tag |or |lock |from |any |valve, |switch, |or |piece |of |
equipment |without |proper |authorization? |- |correct |answer |-no |one.
The |MAIN |purpose |of |a |revision |block |on |an |electrical |drawing |is |to: |- |correct |answer |-note |any |
changes |to |the |original |drawings
Which |of |the |following |is |the |classified |location |where |combustible |vapors |are |always |present? |- |
correct |answer |-class |I |Div |I
With |a |row |of |3-4" |conduits |and |second |row |of |3-2" |and |2-1" |conduits |for |an |angle |pull |box |what |is |
the |MINIMUM |distance |between |the |opposite |walls |of |the |pull |box? |- |correct |answer |-32"
Exposed |field-routed |electrical |conduit |SHOULD |be |installed |so |that |it: |- |correct |answer |-is |plumb |and
|level
When |wiring |control |push |button |control |circuit, |the |auxiliary |holding |contact |(seal-in) |is |wired |with |
the |start |button |in: |- |correct |answer |-parallel
Ferrous |metal |raceways, |boxes, |fittings, |and |supports |must |be |protected |against: |- |correct |answer |-
corrosion
Which |of |the |following |factors |is |used |to |control |the |speed |of |an |induction |motor? |- |correct |answer |-
Frequency
In |a |guardrail |system, |the |guardrails |can |be |made |of |any |of |the |following |EXCEPT: |- |correct |answer |-
ropebanding
If |the |potential |across |the |circuit |is |48 |volts |and |the |current |is |5 |amps |the |resistance |of |the |circuit |is:
|- |correct |answer |-9.6 |ohms
A |UL |listed |rod |type |grounding |electrode |must |have |a |minimum |length |of: |- |correct |answer |-8'
What |is |the |MINIMUM |number |of |overload |sensing |units |required |for |all |three |phase |motors? |- |
correct |answer |-3
In |a |circuit |of |pure |capacitance, |the |current |leads |the |voltage |by |an |angle |of: |- |correct |answer |-90-
degrees
The |standard |unit |for |a |measuring |the |cross-sectional |area |of |a |wire |is |the: |- |correct |answer |-circular |
mil
The |drawing |scale |is |MOST |likely |to |be |found |in |which |of |the |following |drawing |locations? |- |correct |
answer |-the |drawing |little |block
The |length |of |a |bare |copper |conductor |in |a |ground |ring |MUST |be |buried |no |less |than |2.5' |below |
grade |and |with |a |length |of |at |least: |- |correct |answer |-20 |ft.
When |installing |heating |cables |for |anti-icing |systems, |cable |patters |should |be |in |a: |- |correct |answer |-
Serpentine
An |auxiliary |holding |contact |(seal-in) |on |a |NEMA |starter |is |indicated |by |the |terminal |marking: |- |
correct |answer |-A1 |& |A2
, The |neutral |bus |in |a |sub |panel: |- |correct |answer |-is |bonded
The |PEAK |voltage |in |a |nominal |120/208 |VAC |system |is: |- |correct |answer |-208V.
THWN |conductors |have |an |outer |jacket |made |of: |- |correct |answer |-nylon
What |is |shown |on |a |sectional |drawing? |- |correct |answer |-Cutaway |view |of |a |building
Who |is |allowed |to |remove |another |electrician's |tag |or |lock |from |any |valve, |switch, |or |piece |of |
equipment |without |proper |authorization? |- |correct |answer |-no |one.
The |MAIN |purpose |of |a |revision |block |on |an |electrical |drawing |is |to: |- |correct |answer |-note |any |
changes |to |the |original |drawings
Which |of |the |following |is |the |classified |location |where |combustible |vapors |are |always |present? |- |
correct |answer |-class |I |Div |I
With |a |row |of |3-4" |conduits |and |second |row |of |3-2" |and |2-1" |conduits |for |an |angle |pull |box |what |is |
the |MINIMUM |distance |between |the |opposite |walls |of |the |pull |box? |- |correct |answer |-32"
Exposed |field-routed |electrical |conduit |SHOULD |be |installed |so |that |it: |- |correct |answer |-is |plumb |and
|level
When |wiring |control |push |button |control |circuit, |the |auxiliary |holding |contact |(seal-in) |is |wired |with |
the |start |button |in: |- |correct |answer |-parallel
Ferrous |metal |raceways, |boxes, |fittings, |and |supports |must |be |protected |against: |- |correct |answer |-
corrosion
Which |of |the |following |factors |is |used |to |control |the |speed |of |an |induction |motor? |- |correct |answer |-
Frequency
