Final Test Flashcards
___ is defined as the shortest distance in inches measured between a point on the top surface of any direct-buried conductor, cable, conduit, or other raceway and the top surface of finished grade, concrete, or similar cover.
A) Buried
B) Concealed
C) Cover
D) Submerged
Cover
A circuit has two capacitors in series. If C(T) = 16.67 uF and C(1) = 25 uF, what is the value of C(2)?
A) 25 uF
B) 40 uF
C) 50 uF
D) 75 uF
50 uF
What type of study is required to complete an arc flash hazard analysis, including the arc flash boundary and incident energy at a point in the electrical system?
A) coordination study
B) load flow study
C) power quality study
D) short-circuit current study
short-circuit current study
The most important factor used to determine the best place to attach to and lift a load is the load’s ___.
A) center of gravity
B) density
C) height
D) weight
center of gravity
A change to the original blueprints or specifications is accomplished by ___
A) performing the required work as needed
B) submitting an addendum
C) submitting a change order
D) updating the as-built drawings
submitting an addendum
The maximum size copper electrode conductor required by the NEC to a ground rod, pipe, or plate electrode is ___
A) #6 AWG
B) #4 AWG
C) #3 AWG
D) 1/0 AWG
6 AWG
250.66(A)
Knots that are used to tie the ends of two ropes together are called ___
A) bends
B) hitches
C) loops
D) splices
Bends
In general, an insulated grounded conductor of ___ or smaller shall be identified by a continuous white or grey outer finish or by three continuous white stripes on other then green insulation along its entire length.
A) 2/0 AWG
B) 1/0 AWG
C) #1 AWG
D) #6 AWG
6 AWG
A boom is a long beam that projects from the main part of a crane to ___ the reach of the hoist
A) extend
B) lower
C) raise
D) shorten
extend
In grounded systems, an unspliced ___ connects the equipment grounding conductor and the service-disconnect enclosure to the system’s grounded conductor at each service disconnect.
A) grounding conductor
B) grounding electrode
C) isolated conductor
D) main bonding jumper
main bonding jumper
In a pure capacitive circuit, current will ___ the voltage by ___ degrees
A) lag / 90
B) lag / 120
C) lead / 90
D) lead / 120
lead / 90
Which of the following terms describes the maximum tension that a rigging component may be subjected to while maintaining an appropriate margin of safety?
A) breaking strength
B) rated load
C) safety factor
D) ultimate strength
rated load
What is the maximum number of #6 AWG conductors that may be installed in a 6” x 4” x 2” pull box?
A) 6
B) 9
C) 12
D) 14
9
Table 314.16(B)
A coil has impedance of of 188.4 ohms and an internal resistance of 82 ohms. If the coil is connected to a 120-volt, 60hz source, what will be the current through the coil?
A) 0.42 A
B) 0.58 A
C) 0.63 A
D) 1.46 A
0.58 A
What is the total impedance of a circuit containing a 25 ohm resistor and a 30 ohm capacitor fed from a 240VAC 60hz source
A) 30 ohms
B) 39 ohms
C) 45 ohms
D) 52 ohms
39 ohms
Resonance is described as the ___ at which inductive reactance is equal to capacitive reactance.
A) bandwitch
B) frequency
C) phase
D) voltage
frequency
A ___ condition represents low impedance fault with the highest level of fault current.
A) arcing fault
B) bolted fault
C) grounded fault
D) phase-to-phase fault
bolted fault
What signal must be given when the load must remain at a constant elevation and move horizontally closer to the crane as the boom is raised
A) lower boom
B) raise boom
C) lower boom raise load
D) raise boom lower load
raise boom lower load
Three capacitors having values of 10 uF, 25 uF, and 40 uF are connected in series. What is the total capacitance of the circuit?
A) 3 uF
B) 6 uF
C) 9 uF
D) 12 uF
6 uF
Exposed non-current-carrying metal parts of fixed equipment supplied by or enclosing conductors that are likely to become energized shall be connected to an equipment grounding conductor where within ___ vertically or ___ horizontally of ground of grounded metal objects and subject to contact by persons
A) 5’ / 5’
B) 5’ / 8’
C) 8’ / 5’
D) 8’ / 8’
8’ / 5’
What kind of crane includes a hoist trolley that travels along a horizontal beam on overhead runways?
A) gantry
B) mobile
C) overhead
D) tower
overhead
Under most circumstances, if the answer to a question or problem cannot be found on the blueprint drawings, it can be found in the ___
A) as-built drawings
B) detail drawings
C) job specifications
D) NEC
NEC
What is the name of the structure that extends from the platform of a mobile crane for the purpose of stabilizing the crane?
A) base structure
B) outrigger
C) stability pad
D) support leg
outrigger
To get an overview of the job to be constructed, one should consult the ___
A) elevation plans
B) floor plan
C) panel schedule
D) site plan
site plan
The NEC allows an underground metallic water pipe to be used as a grounding electrode as long as it has direct contact with the earth for ___
A) 2’
B) 5’
C) 10’
D) 18’
10’
When looking to see where lighting fixtures will be installed in a T-bar ceiling, one would check the ___
A) floor plan
B) lighting drawing
C) lighting schedule
D) reflected ceiling drawing
Reflected Ceiling
For greater strength and permanence (~85-90% of the rope itself) a ___ is used for fastening two ropes together
A) crimp
B) hitch
C) splice
D) weaver’s knot
splice
Type ___ cable is a factory assembly of one or more insulted circuit conductors with or without optical fiber members enclosed in an armor of interlocking metal tape, or a smooth or corrugated metallic sheath
A) AC
B) MC
C) MI
D) NMS
MC
In both exposed and concealed locations, where cable or raceway type wiring method is installed through bored holes in joists, rafter or wood members, holes shall be bored so that the edge of the hole is not less than ___ from the nearest edge of the wood member.
A) 1”
B) 1 1/4”
C) 2 1/2”
D) 3”
1 1/4”
The sheepshank is primarily used to ___
A) attach a rope to a hook for pulling loads
B) form a seat for raising or lowering people
C) temporarily shorten a rope without cutting it
D) tow or hoist conduit
temporarily shorted rope without cutting it
A lighting panel is protected by 150-ampere non time delay fuses. What is the minimum size of the equipment grounding conductor
A) #8 AWG
B) #6 AWG
C) #4 AWG
D) #3 AWG
6 AWG
Table 250.122
What is the name of the boundary that an individual worker must observe before they work on an energized electrical conductor that has not been placed in an electrically safe work condition
A) Arc blast approach
B) limited approach
C) prohibited approach
D) shock-hazard approach
limited approach
Identify the formula:
I(t) = Sqrt( I(r)^2 + I(x)^2 )
A) Total current in a parallel AC circuit
B) Total current in a parallel DC circuit
C) Total current in a series AC circuit
D) Total current in a series DC circuit
Total current in a series AC circuit
A drawing that shows conduit size, number of conductors, panel locations, and how the feeders are run is called the ___
A) floor plan
B) panel schedule
C) riser diagram
D) site plan
riser diagram
Where insulating fittings or insulating materials are used with conduits, they shall have a temperature rating ___ the insulation temperature rating of the installed conductors
A) equal to
B) equivalent to
C) greater than
D) not less than
not less than
Where installed in ___ locations, type TC cable shall also be resistant to moisture and corrosive agents
A) damp
B) dry
C) outdoor
D) wet
wet
According to industry recognized practices, the first step in reading a set of commercial prints is to examine the ___
A) addendums
B) cover sheet for dates and print designations
C) electrical drawings
D) site and architectural plans
cover sheet for dates and print designations
