Test

What is the minimum size AWG copper conductor permitted for conductors with a 0-2,000-vol voltage rating? #14 #10 #8 #6

#14

According to the NEC aluminum electrode conductors used to ground a rod, pipe, or plate electrode should be no larger than ______. #6 #4 #3 1/0

#4

The maximum size copper electrode conductor required by the NEC to a ground rod, pipe, or plate electrode is _____. #6 AWG #4 AWG #3 AWG 1/0 AWG

#6 AWG

A coil has an inductive reaction (XL) of 188.4 ohms and an internal resistance (R) of 82 ohms. If the coil is connected to a 120V, 60 htz source, what will be the current through this series RL circuit? .42 A .58 A .63 A 1.46 A

.58A

In both exposed and concealed locations, where a cable or raceway type wiring method is installed through bored holes in joists, rafters, 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. 1" 1 ¼" 2 ½" 3"

1 ¼"

In a 3-phase WYE system, the line current is ______ times the phase current. .58 1 1.73 3

1.73

In a 3-phase delta system the line current is _____ times the phase current. 0.58 1 1.73 3

1.73

The minimum size copper equipment grounding conductor required for a branch circuit protected by a 60-ampere fuse is a ______. 12 awg 10 awg 8 awg 6 awg

10 AWG

The NEC allows an ungrounded metallic water pipe to be used as a grounding electrode as it has direct contact with the earth for _____. 2' 5' 10' 18"

10'

If 10 equal size heater strips are connected in parallel with a 120-volt circuit, and the total circuit current is 8.33 amperes, what is the wattage of each heater strip? 50W 72W 100W 144W

100W

The grounded conductor for copper service-entrance conductors that are larger than 1,100 kcmil shall not be less than _______ of the area of the largest service-entrance phase conductor. 100% 12.5% 50% 70%

12.5%

The minimum size of copper main bonding jumper for a service that consists of one 350 kcmil copper conductor per phase is ______. 2 AWG 4 AWG 6 AWG 8 AWG

2 AWG

Where solid rock prevents compliance with the minimum cover depths specified in Table 300.5 of the NEC, the wiring shall be installed in a metal or non metallic raceway permitted for direct burial/ The raceways shall be covered by a minimum of _____ of concrete extending down to rock. 2" 4" 6" 12"

2"

The service entrance copper conductors are 750 kcmil for a 3-phase, 120/208v, 4 wire system. Given this information, what is the minimum size of the copper grounding electrode conductor to a metal water pipe? 6 AWG 4 AWG 2 AWG 2/0 AWG

2/0 AWG

All 125-volt receptacles located within _____ from the inside walls of a permanently installed pool shall be protected by a class A ground fault circuit interrupter. 5' 10' 15' 20'

20'

A continuous load is a load where the maximum current is expected to continue for _____ or more. 1 hour 2 hours 3 hours 4 hours

3 hours

Electrical nonmetallic tubing (ENT) shall be installed as a complete system and shall be securely fastened in place at intervals not exceeding ______ in addition, EMT shall be securely fastened in place within ______ of each outlet or device box, junction box, cabinet, or fitting where it terminates. 3'/3' 3'/4 ½'...? Wtf 4 ½'/4 ½' 4 ½" / 6'

3'/3'

When using a sling, what is the minimum recommended sling angle? 30 60 90 120

30

A lighting panel is protected by 150-ampere non-timed delay fuses. What is the minimum size of the aluminum equipment grounding conductor? 8 awg 6 awg 4 awg 3 awg

4 AWG

A lightning panel is protected by a 150-ampere circuit breaker. What is the minimum size of the copper equipment grounding conductor? 8 AWG 6 AWG 4 AWG 3 AWG

4 AWG

The service entrance aluminum conductors are 750 kcmil for a 3-phase, 120/208V, 4 wire system. What is the minimum size of the aluminum grounding electrode conductor to a pipe electrode? 5 AWG 4 AWG 2 AWG 2/0 AWG

4 AWG

What is the primary voltage for all dry type transformers in the figure? 120V 240V 277V 480V

480V

All bends of Type AC Cable shall be made so that the cable will not be damaged, and the radius of the curve of the inner edge of any bend shall not be less than _____ times the diameter of the Type AC Cable. 2 5 7 10

5

What is the total resistance of a circuit containing a branch of 3 parallel 15-kiloohms resistors in series with a branch of two parallel resistors (1,000 ohms and 250 ohms)? 4.80 kiloohms 5.20 kiloohms 43.75 kiloohms 46.25 kiloohms

5.20 kiloohms

A circuit has 2 capacitors in series. If c=16.67 uf and c= 25 uf, what is the value of C2? 25 uf 40 uf 50 uf 75 uf

50 uf

When a copper conductor is used as a grounding electrode conductor it must be protected if it is smaller than _____AWG. 10 8 6 4

6

Where type NM cable is run at anges with joists in unfinished basements, it shall be permissible to secure cables not smaller than 2 ____ or 3 _____ conductors directly to the lower edges of the joists. Smaller cables shall either e run through bored holes in joist or on running boards. 6 AWG/8 awg 8/10 awg 10/12 awg 12/14 awg

6 AWG/8 awg

Three capacitors having values of 10 microfarads, 25 microfarads, and 40 microfarads are connected in series. What is the total capacitance of the circuit? 3 uf 6 uf 9 uf 12 uf

6 uf

The voltage across a capacitor that is charging from a direct current supply will increase ______ for each time constant. 20% 63.2% 99.3% 100%

63.2%

Which one of the following National Fire Protection Association documents is titled the " Standard for Electrical Safety in the Workplace"? 70E EIA/TIA IEEE White Book

70E

One horsepower is equal to _______ 467W 674W 746W 764W

746W

What is the total impedance (Zt) in the circuit? (ADD FIGURE) 746.94 753.60 760.21 776.1

760.21

A parallel RC circuit has a true power of 2,420 watts and an apparent power of 3,102 volt-amps. What is the power factor in percent? 39.3% 62.5% 78% 91.2%

78%

Four branch circuits are installed in the same conduit leaving a distribution pane. One has 15-amp protection, one has 20amp protection, one has 30amp protection, and one has 40amp protection. What is the minimum size of the aluminum equipment ground in the home-run conduit? 14 awg 12 awg 10 awg 8 awg

8 awg

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_____horizontally of ground or grounded metal objects and subject to contact by persons. 5'/5' 5'/8' 8'/5' 8'/8'

8'/5'

Determine the minimum number of 120-volt, 15 ampere lighting circuits required for dwelling unit with a computed lighting load of 16,000 volt amps. 2 5 7 9

9

What is the maximum number of 6 AWG conductors that may be installed in the 6"x4"x2" pull box? 6 9 12 14

9

?

?

Which item is a suitable grounding electrode? A 20-foot No. 4 copper conductor encased in 12" of concrete footing A ⅜ " steel rod driven 6' into the soil A metal underground water pipe in direct contact with the earth for 6' The metal frame of the building not in direct contact with earth vertically for 10' or more.

A 20-foot No. 4 copper conductor encased in 12" of concrete footing

When branch conductors are increased in size to compensate for voltage drop, the sizing of equipment grounding conductor is ______. Adjusted proportionately to the branch conductors Increased to the next conductor size Not increased Sized to 100% of the ungrounded conductor size

Adjusted proportionately to the branch conductors

What type of jumper is required to connect the grounding terminal of a grounding type receptacle to a metal enclosure? Main bonding jumper Supplemental bonding jumper An equipment bonding jumper An isolated bonding jumper

An equipment bonding jumper

Knots that are used to tie the ends of two ropes together are called ____? Bends Hitches Loops Splices

Bends

A _____ condition represents low impedance fault with the highest level of fault current. Arcing fault Bolted fault Grounded fault Phase-to-phase fault

Bolted fault

A commonly used knot that does not slip, jam, or fail, is easily tied and untied, and has many uses is the _____ Bowline Cats paw Sheepshank Square knot

Bowline

The knot illustrated is ____. (ADD FIGURE) Bowline Cat's paw Clove hitch Square knot

Bowline

The primary purpose of the main bonding jumpers is to ______. Carry the ground-fault current back to the source Isolate the neutral from ground Maintain a high resistance to ground on the service enclosure Prevent a separately derived service system

Carry the ground-fault current back to the source

The most important factor used to determine the best place to attach to and lift a load is the loads ____? Center of gravity Density Height Weight

Center of gravity

Which of the following is not considered a common electrical hazard associated with working on or near energized electrical equipment? Arc blast Arc flash Chelation Shock

Chelation

A _____ person, according to OSHA, is "one who is capable of Identifying existing and predictable hazards in the surroundings or working conditions which are unsanitary, hazardous, or dangerous to employees, and who has authorization to take prompt corrective measures to eliminate them. Authorized Certified Competent Qualified

Competent

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 an electrical system? Coordination study Load flow study Power quality study Short-circuit current study

Coordination study

_____ 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. Buried Concealed Cover Submerged

Cover

According to industry recognized practices, the first step in reading a set of commercial prints is to examine the ____. Addendums Cover sheet for dates and print designations Electrical drawings Site and architectural plans

Cover sheet for dates and print designations

When referring to the specifications for a construction project, in which section of the specifications is information relating to electrical installations located? Division 1 Division 11 Division 15 Division 16

Division 16

19. The figure represents a >>>>> (ADD FIGURE) Electrical room diagram Feeder riser diagram Sectional drawing Site plan

Electrical room diagram

The figure represents _____. (ADD FIGURE) Emergency lighting/power plan Fire alarm-voice/data/video Lighting plan

Emergency lighting/power plan

The hand signal in the figure is used to tell the crane operator to ______. (ADD FIGURE) Lower the boom Move slowly Raise the load Emergency stop

Emergency stop

A boom is a long beam that projects from the main part of the crane to _____ the reach of the hoist. Extend Lower Raise Shorten

Extend

To get an overview of the job to be constructed, one should consult the _____. Elevation plans Floor plan Panel schedule Site plan

Floor plan

Resonance is defined as the ______ at which inductive reactance is equal to capacitive reactance. Bandwidth Frequency Phase Voltage

Frequency

The figure represents a ______ Fire alarm system plan HVAC plan Reflected ceiling plan Structural building drawing

HVAC plan

1. The low opposition to current for all grounding or grounded conductors is primarily affected by the system's______. Ambient temperature Impedance Phase angle Power factor

Impedance

When a circuit breaker trips due to a fault current that approaches the interrupting rating of the circuit breaker, what does the NFPA 70E standard 225.3 require to be done? Replace the circuit breaker Clean and reset the circuit breaker Inspect and reset the circuit breaker Inspect and test the circuit breaker

Inspect and test the circuit breaker

The maximum current that a fuse or circuit breaker can safely interrupt under standard test conditions is called the ______. Ampere rating Interrupting rating Maximum available fault current rating Withstand rating

Interrupting rating

The characteristics of a fuse in which higher percentage overcurrent faults open faster than lower percentage faults is called the ____. Converse time-current characteristics Fault time-current characteristics Inverse time-current characteristics Overload time-current characteristics

Inverse time-current characteristics

A subpanel in a commercial installation shall have the grounding terminal and neutral bar _____ Bonded together Bonded together but not bonded to the enclosure Isolated with only the grounding terminal bonded to the enclosure Isolated with only the neutral bar bonded to the enclosure

Isolated with only the grounding terminal bonded to the enclosure

A subpanel in a residential installation shall have the grounding terminal neutral bar _____. Bonded together and bonded to the enclosure Bonded together but not bonded to the enclosure Isolated with only the grounding terminal bonded to the enclosure Isolated with the neutral bar bonded too the enclosure

Isolated with only the grounding terminal bonded to the enclosure

Under most circumstances, if the answer to a question or problem cannot be found on the blueprint drawings, it can be found in the ______. As-built drawings Detail drawings Job specifications NEC

Job specifications

Identify the symbol Sk Key switch Knife switch Surface mounted switch Switch with pilot light

Key switch

In a pure capacitive circuit, current will _____ the voltage by _____. lag / 90 degrees Lag / 120 degrees Lead / 90 degrees Lead / 120 degrees

Lead / 90 degrees

The provisions in Article 300 are not intended to apply to the conductors that form an integral part of equipment, such as motors, controllers, motor controllers, or factory assembled control equipment or _______ utilization equipment. Listed Low-voltage Manufactured Special-application

Listed

Occupational Safety and Health Administration (OSHA) requirements state that while any employee is exposed to contact ith parts of fixed electrical equipment oor which have been de-energized, the circuits energizing the parts shall be ______ or tagged or both. Locked out Marked sufficiently Readily identified Strategically located

Locked out

The hand signal in the figure is used to tell the crane operator to ______. (ADD FIGURE) Drop the load Lower the boom Lower the load Stop everything

Lower the boom

Type _____ cable is a factor assembly of one or more insulated circuit conductors with or without optical fiber members enclosed in an armor of interlocking metal tape, or a smooth or corrugated metallic sheath. AC MC MI NMS

MC

In grounded systems, an unspliced _____ connects the equipment grounding conductor and the service-disconnect enclosure to the systems grounded conductor at each service disconnect. Grounding conductor Grounding electrode Isolated conductor Main bonding jumper

Main bonding jumper

What is the total impedance in the circuit? (ADD FIGURE) 30 ohms 39 ohms 45 ohms 52 ohms

NO ANSWER

Where insulating fittings or insulating materials are used with conduits, they shall have a temperature rating _____ the insulation temperature rating of the installed conductors. Equal to Equivalent Greater than Not less than

Not less than

What is the name of the structure that extends from the platform of a mobile crane for the purpose of stabilizing the crane? Base structure Outrigger Stability pad Support leg

Outrigger

18. What kind of crane includes a hoist trolley that travels along a horizontal beam on overhead runways? Gantry Mobile Overhead Tower

Overhead

What does the variable X represent in the formula? X= Watts/volts amps Current Power factor Resistance Voltage

Power factor

What is the name of the boundary that an individual worker must observe before he or she works on an energized electrical conductor that has not been placed in an electrically safe work condition? Arc blast approach Limited approach Prohibited approach Shock-hazard approach

Prohibited approach

Occupational safety and health (OSHA) requirements state that only _____ persons may work on electric circuit parts or equipment that have not be deenergized. Authorized Competent Qualified Recognized

Qualified

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? Lower boom Raise the boom Lower the boom and raise the load Raise the boom and lower the load

Raise the boom and lower the load

The figure represents: (ADD FIGURE) Emergency lighting power plan HVAC plan Lighting plan Reflected ceiling plan

Reflected ceiling plan

When looking to see where lighting fixtures will be installed in a T-bar ceiling, one would check _____. Floor plan Lighting drawing Lighting schedule Reflected-ceiling drawing

Reflected-ceiling drawing

A drawing that shows conduit size, number of conductors, panel locations, and how the feeders are run is called the _____. Floor plan Panel schedule Riser diagram Site plan

Riser diagram

NEC 110.24 (with exception) requires that the maximum available fault current be marked on _____. Distribution panelboards Motor control center Service equipment Transfer switch

Service equipment

A ______ is a wheel with a concave edge for supporting a moving rope that is changing directions. Block Gin Sheave Tackle

Sheave

The primary purpose of ground-fault circuit-interrupter protection is to protect personnel against which of the following? Faults Overcurrent Overload Shock

Shock

A detailed list of job requirements covering all work that is to be performed is called a _____. Addendum Bib drawing Schedule Specification

Specification

For greater strength and permanence (approximately 95% to 90% of the rope itself) a ______ is used for fastening two ropes together. Crimp Hitch Splice Weaver's knot

Splice

A change to the original blueprints or specifications is accomplished by _____. Performing the required work as needed Submitting an addendum Submitting a change order Updating the as-built drawings

Submitting an addendum

The sheepshank is primarily used to ______ Attach a rope to a hook for pulling loads Form a seat for raising and lowering people Temporarily shorten rope without cutting it Tow or hoist conduit

Temporarily shorten rope without cutting it

The grounding electrode conductor in an alternating current system must be sized no less than ______. The listing in table 250.66 of the NEC The listing in table 250.122 of the NEC 70% of the ungrounded conductor 100% of the ungrounded conductor.

The listing in table 250.66 of the NEC

A grounding terminal and neutral bar are tied together at ______? A subpanel An autotransformer The main panel....? The meter hub

The meter hub

Identify the formula: (ADD FIGURE) Total current in a parallel AC circuit Total current in a parallel DC circuit Total current in a series AC circuit Total current in a series DC circuit

Total current in a parallel AC circuit

Where installed in _____ locations, type TC Cable shall also be resistant to moisture and corrosive agents. Damp Dry Outdoor Wet

Wet

Which of the following terms describes the maximum tension that a rigging component may be subjected to a while maintaining an appropriate margin of safety? a. breaking strength B. rated load C. safety factor D. ultimate strength

a. breaking strength

When scaled on an electrical blueprint, a conduit stub-up measures 3 ⅝" from the wall. If the stub-up is actually supposed to be located 14.5 feet from the wall, what is the correct scale for this blueprint? ⅛"=1' ¼"=1' ½" = 1' ⅝"= 1'

¼"=1'

When applying the (not over) 25 feet long feeder tap rule, conductors shall be permitted to be tapped, without overcurrent protection at the tap, to a feeder provide the ampacity of the tap conductors is not less than ______ of the rating of the overcurrent device protecting the feeder conductors. ⅛ ¼ ⅓ ½

⅓