Prepare for your exams
Get points
Guidelines and tips
Sell on Docsity
Docsity AI

Prepare for your exams

Study with the several resources on Docsity

Earn points to download

Earn points by helping other students or get them with a premium plan

Guidelines and tips

Sell on Docsity

Docsity AI

Log in Sign up

Prepare for your exams

Study with the several resources on Docsity

Find documents

Prepare for your exams with the study notes shared by other students like you on Docsity

Search for your university

Find the specific documents for your university's exams

Docsity AINEW

Summarize your documents, ask them questions, convert them into quizzes and concept maps

Explore questions

Clear up your doubts by reading the answers to questions asked by your fellow students

Earn points to download

Earn points by helping other students or get them with a premium plan

Share documents

20 Points

For each uploaded document

Answer questions

5 Points

For each given answer (max 1 per day)

All the ways to get free points

Get points immediately

Choose a premium plan with all the points you need

Study Opportunities

Choose your next study program

Get in touch with the best universities in the world. Search through thousands of universities and official partners

Community

Ask the community

Ask the community for help and clear up your study doubts

Free resources

Our save-the-student-ebooks!

Download our free guides on studying techniques, anxiety management strategies, and thesis advice from Docsity tutors

Wyoming (WY) 385 Journeyman Electrician Practice Exam, Exams of Technology

Technology

The Wyoming (WY) 385 Journeyman Electrician Practice Exam is for individuals preparing for certification as journeyman electricians. Topics include electrical installation, wiring methods, safety protocols, troubleshooting, and compliance with the National Electrical Code (NEC) and Wyoming state electrical codes. Candidates will be tested on their ability to install, repair, and maintain electrical systems in residential, commercial, and industrial settings, ensuring the safety and functionality of electrical systems.

Typology: Exams

2024/2025

Available from 05/12/2025

nicky-jone 🇮🇳

3.1

(39)

28K documents

1 / 45

This page cannot be seen from the preview

Don't miss anything!

Wyoming (WY) 385 Journeyman Electrician Practice Exam

1. Which law defines the relationship between voltage, current, and resistance?

A) Kirchhoff’s Current Law

B) Ohm’s Law

C) Faraday’s Law

D) Ampere’s Law

Answer: B

Explanation: Ohm’s Law states that V = IR, where voltage (V) equals the product of

current (I) and resistance (R).

2. In electrical circuits, which unit is used to measure electrical current?

A) Volt

B) Ohm

C) Ampere

D) Watt

Answer: C

Explanation: The ampere is the standard unit for current.

3. What does a schematic diagram represent?

A) A physical layout of components

B) The circuit’s logical flow

C) The color coding of wires

D) The installation instructions

Answer: B

Explanation: A schematic diagram shows the electrical relationships and connections,

not the physical layout.

4. Which of the following best describes a blueprint?

A) A simple line drawing without measurements

B) A detailed technical drawing showing scale, dimensions, and layout

C) A rough sketch of an idea

D) A list of electrical parts only

Answer: B

Explanation: Blueprints are scaled, detailed drawings used for construction and

installation.

5. When reading a plan, what does the “legend” indicate?

A) The key to symbols used on the drawing

B) The location of the project

C) The electrical load calculations

D) The installation schedule

Answer: A

Explanation: The legend explains symbols, abbreviations, and notation used in the

drawing.

6. Which symbol on a schematic typically represents a resistor?

A) A zigzag line

B) A circle

Partial preview of the text

Download Wyoming (WY) 385 Journeyman Electrician Practice Exam and more Exams Technology in PDF only on Docsity!

Wyoming (WY) 385 Journeyman Electrician Practice Exam

Which law defines the relationship between voltage, current, and resistance? A) Kirchhoff’s Current Law B) Ohm’s Law C) Faraday’s Law D) Ampere’s Law Answer: B Explanation: Ohm’s Law states that V = IR, where voltage (V) equals the product of current (I) and resistance (R).
In electrical circuits, which unit is used to measure electrical current? A) Volt B) Ohm C) Ampere D) Watt Answer: C Explanation: The ampere is the standard unit for current.
What does a schematic diagram represent? A) A physical layout of components B) The circuit’s logical flow C) The color coding of wires D) The installation instructions Answer: B Explanation: A schematic diagram shows the electrical relationships and connections, not the physical layout.
Which of the following best describes a blueprint? A) A simple line drawing without measurements B) A detailed technical drawing showing scale, dimensions, and layout C) A rough sketch of an idea D) A list of electrical parts only Answer: B Explanation: Blueprints are scaled, detailed drawings used for construction and installation.
When reading a plan, what does the “legend” indicate? A) The key to symbols used on the drawing B) The location of the project C) The electrical load calculations D) The installation schedule Answer: A Explanation: The legend explains symbols, abbreviations, and notation used in the drawing.
Which symbol on a schematic typically represents a resistor? A) A zigzag line B) A circle

C) A straight line D) A triangle Answer: A Explanation: A zigzag line is the common symbol for a resistor.

In plan reading, what is the primary purpose of a title block? A) To list electrical specifications B) To identify the project and drawing details C) To show the color coding of wires D) To calculate load requirements Answer: B Explanation: The title block includes project name, drawing number, date, and scale.
What does a “section view” in a blueprint show? A) An exploded view of components B) A cross-sectional slice of a structure C) A three-dimensional perspective D) Only the electrical wiring layout Answer: B Explanation: Section views reveal interior details by “cutting” through the object.
Ohm’s Law can be rearranged to solve for resistance. Which formula is correct? A) R = V/I B) R = I/V C) R = VI D) R = I – V Answer: A Explanation: Rearranging V = IR gives R = V/I.
Which of the following is NOT a basic electrical quantity? A) Voltage B) Current C) Resistance D) Frequency Answer: D Explanation: Voltage, current, and resistance are basic quantities; frequency is secondary.
What is the unit of electrical power? A) Joule B) Watt C) Volt D) Ampere Answer: B Explanation: Power is measured in watts (W).
Which of these best defines “circuit analysis”? A) Physical installation of wires B) Calculating voltages and currents in a circuit C) Designing the layout of a building D) Selecting proper wire colors Answer: B

Explanation: Service conductors connect the utility supply to the building’s service equipment.

What is the purpose of a “disconnecting means” in an electrical plan? A) To permanently cut power B) To allow safe de-energization of a circuit C) To ground a circuit D) To convert AC to DC Answer: B Explanation: Disconnecting means allows the circuit or equipment to be safely isolated.
Which drawing detail helps locate devices in an installation? A) Electrical calculation sheet B) Device schedule C) Equipment grounding diagram D) Load calculation chart Answer: B Explanation: A device schedule lists the location and type of devices.
The term “panelboard” refers to: A) A wiring conduit B) An assembly of overcurrent devices C) A power transformer D) A cable connector Answer: B Explanation: A panelboard houses circuit breakers or fuses for circuit protection.
What is a “conduit” used for in wiring installations? A) To protect and route wiring B) To terminate circuits C) To measure voltage D) To join circuits Answer: A Explanation: Conduits provide a physical and protective pathway for conductors.
A “junction box” is primarily used to: A) House a circuit breaker B) Provide a location to connect multiple conductors C) Enclose a transformer D) Support light fixtures Answer: B Explanation: Junction boxes safely contain wire splices and connections.
When reviewing an electrical plan, “elevations” refer to: A) Top view drawings B) Side view drawings showing vertical relationships C) Load calculations D) Conductor sizes Answer: B Explanation: Elevations display the vertical arrangement of the building’s elements.
What does “NEC” stand for? A) National Electrical Code

B) National Energy Council C) National Engineering Committee D) National Equipment Certification Answer: A Explanation: NEC stands for National Electrical Code, which sets standards for electrical installations.

In plan reading, a “detail drawing” provides: A) A general overview of the site B) A close-up view of a complex installation C) An abstract concept only D) A simplified version of the entire project Answer: B Explanation: Detail drawings focus on complex or critical installation areas.
Which is a correct application of Ohm’s Law? A) Calculating the necessary conductor size B) Determining the current flowing through a resistor C) Sizing a transformer D) Choosing an appropriate disconnect Answer: B Explanation: Ohm’s Law directly relates voltage, current, and resistance in a circuit.
What does “AC” stand for in electrical terminology? A) Alternating Current B) Absolute Conduction C) Analog Circuit D) Automatic Conduction Answer: A Explanation: AC stands for Alternating Current, which periodically reverses direction.
Which component on a schematic usually indicates a ground connection? A) A solid circle B) A set of three descending horizontal lines C) A dashed line D) A diagonal line Answer: B Explanation: Three horizontal lines of decreasing length are the common symbol for ground.
In a wiring diagram, a dashed line typically represents: A) A conductor with continuous insulation B) A conductor that is not physically present C) A hidden connection or non-electrical element D) A special type of grounding conductor Answer: C Explanation: Dashed lines often denote hidden or optional connections that are not part of the main physical layout.

C) Isolation transformer D) All of the above Answer: D Explanation: All listed transformer types are common in electrical installations.

System grounding is essential because it: A) Provides a complete circuit for current B) Minimizes the risk of electrical shock C) Increases the circuit’s resistance D) Acts as an insulator Answer: B Explanation: Grounding enhances safety by providing a low-resistance path for fault currents.
Bonding in electrical systems ensures that: A) All metallic parts are at the same electrical potential B) Circuits are overloaded C) Voltage remains constant D) The installation is waterproof Answer: A Explanation: Bonding connects metal parts to ensure no dangerous voltage differences occur.
Temporary service wiring is primarily used for: A) Permanent installations B) Short-term power needs during construction C) Emergency backup only D) Outdoor lighting circuits Answer: B Explanation: Temporary wiring supplies power during construction until permanent wiring is installed.
The term “service equipment” typically includes which of the following? A) Circuit breakers and disconnects B) Electrical meters and transformers C) Both A and B D) Only the wiring Answer: C Explanation: Service equipment comprises all components that connect the utility supply to the interior distribution system.
When calculating service loads, which factor is most critical? A) The color coding of the wires B) The total connected load and diversity factor C) The physical layout of the building D) The ambient room temperature Answer: B Explanation: Accurate service load calculations require knowing the connected load and applying the diversity factor.
Which NEC article typically covers service entrance equipment? A) Article 210

B) Article 250 C) Article 230 D) Article 300 Answer: C Explanation: Article 230 of the NEC deals with services and service equipment installations.

A “main bonding jumper” is used to: A) Connect the service neutral to the grounding electrode system B) Connect two separate circuits C) Provide a disconnect for maintenance D) Join two different panels Answer: A Explanation: The main bonding jumper ensures the neutral is properly connected to the grounding system for safety.
What is the typical voltage rating for residential service equipment in the United States? A) 120/240 V B) 277/480 V C) 600 V D) 12 V Answer: A Explanation: Most residential service equipment is rated for 120/240 volts.
Overcurrent protection for service conductors is provided by: A) Fuses or circuit breakers B) Conduits C) Wire color coding D) Ground rods Answer: A Explanation: Fuses and breakers protect conductors from excessive current.
When sizing service conductors, one must consider: A) The ambient temperature B) The expected load C) The length of the run D) All of the above Answer: D Explanation: All factors—ambient temperature, load, and conductor length—affect conductor sizing.
Which of these is a critical safety function of grounding in service equipment? A) Enhancing signal clarity B) Providing a path for fault current C) Reducing conductor length D) Increasing current capacity Answer: B Explanation: Grounding safely directs fault current away from people and equipment.
Service entrance conductors are typically installed in: A) Rigid metal conduit

D) Surge protector Answer: B Explanation: The main circuit breaker provides overcurrent protection for the service conductors.

What does “ampacity” refer to in conductor selection? A) The color of the insulation B) The maximum current a conductor can carry safely C) The physical size of the conductor D) The voltage drop over distance Answer: B Explanation: Ampacity is the current-carrying capacity of a conductor without exceeding temperature limits.
Which factor does NOT affect the service equipment’s current-carrying capacity? A) Conductor size B) Conductor insulation type C) Ambient temperature D) The shape of the breaker Answer: D Explanation: The breaker’s shape does not influence conductor ampacity; size, insulation, and temperature do.
Temporary service wiring must be removed when: A) The project is completed B) The service equipment is replaced C) Weather conditions change D) The conductors exceed 100 feet Answer: A Explanation: Temporary wiring is only used during construction and must be replaced by permanent wiring afterward.
A “disconnect switch” at the service entrance must be located: A) Inside the meter socket B) Where it is easily accessible to utility workers and emergency responders C) Behind locked doors D) In the basement only Answer: B Explanation: Accessibility is critical for safety during emergencies.
Which NEC article covers the installation of transformers for services? A) Article 215 B) Article 250 C) Article 230 D) Article 310 Answer: C Explanation: Article 230 includes requirements for service equipment, including transformers in service installations.
In service calculations, the term “demand factor” refers to: A) The amount by which the calculated load may be increased B) The percentage of the connected load that is expected to be in use simultaneously

C) The difference between the load and the conductor rating D) A method for selecting conduit size Answer: B Explanation: Demand factor adjusts the total connected load to a realistic level of usage.

Section 3. Feeders (Questions 61–80)

Feeders are circuits that: A) Supply power from the service equipment to branch circuits B) Connect only lighting fixtures C) Are used for temporary wiring D) Distribute power within a single outlet Answer: A Explanation: Feeders carry power from the main service equipment to subpanels or distribution points.
Which of the following is essential when calculating feeder loads? A) The ambient temperature near the feeder B) The connected load on the feeder C) The color of the conductor insulation D) The length of the branch circuit Answer: B Explanation: Knowing the connected load ensures the feeder is properly sized.
The term “equipment grounding” in feeders refers to: A) Connecting the neutral to the ground B) Providing a low-resistance path to earth for fault currents C) Isolating circuits from the ground D) Increasing circuit resistance Answer: B Explanation: Equipment grounding minimizes shock hazards by directing fault currents safely to ground.
Which conductor in a feeder system is NOT typically considered a “current- carrying conductor”? A) Hot conductor B) Neutral (if not carrying unbalanced load) C) Grounding conductor D) All carry current Answer: C Explanation: The equipment grounding conductor is not meant to carry current during normal operation.
Feeder conductors must be sized based on: A) The length of the feeder run only B) The expected load and conductor ampacity C) The number of outlets on the feeder D) The color coding of the wires

Answer: B Explanation: Proper grounding makes all exposed metal parts safe in the event of a fault.

Feeder circuits typically feed: A) Only lighting circuits B) Subpanels or distribution panels C) Only receptacle circuits D) Portable equipment only Answer: B Explanation: Feeders carry power from the main panel to subpanels or other distribution points.
What is the primary reason for applying derating factors to feeder conductors? A) To reduce cost B) To account for heat buildup when multiple conductors are installed together C) To match color coding D) To shorten installation time Answer: B Explanation: Derating factors compensate for reduced heat dissipation when conductors are bundled.
Which document provides the guidelines for calculating feeder loads? A) National Electrical Code (NEC) B) Manufacturer’s catalog C) Local weather reports D) Building blueprint only Answer: A Explanation: The NEC provides the necessary guidelines and formulas for load and feeder calculations.
A feeder’s conductor insulation must be rated for: A) Only indoor use B) The maximum ambient temperature and installation conditions C) Only the voltage rating D) Color only Answer: B Explanation: Insulation must handle both voltage and environmental conditions safely.
In feeder circuits, a “tie” is used to: A) Connect two feeder circuits together B) Ground a circuit C) Join a conductor to a conduit D) Remove excess load Answer: A Explanation: A tie connects circuits or panels where required, ensuring proper distribution.
What is the purpose of performing voltage drop calculations in feeders? A) To determine if conductors are long enough B) To ensure the voltage at the load end is within acceptable limits C) To calculate conductor insulation thickness D) To decide on conduit size

Answer: B Explanation: Voltage drop must be minimized to ensure proper operation of connected equipment.

Which of the following could cause a feeder conductor to overheat? A) Undersized conductors for the load B) Excessive ambient temperatures C) Bundling too many conductors together without proper derating D) All of the above Answer: D Explanation: All these factors can contribute to conductor overheating if not properly addressed.
A feeder circuit supplying a subpanel in a detached building must include: A) A separate equipment grounding conductor B) Only a neutral conductor C) Only hot conductors D) No additional conductors if installed underground Answer: A Explanation: Detached structures require a dedicated equipment grounding conductor per NEC requirements.
Which best describes a “feeder” in an electrical distribution system? A) A branch circuit powering a single outlet B) A circuit that carries power from a main panel to another panel or load center C) A portable generator’s output D) An emergency backup line only Answer: B Explanation: Feeders serve as the primary conduits for power distribution between panels.

Section 4. Branch Circuits and Conductors (Questions 81 –

A branch circuit is defined as the circuit between the final overcurrent device and the outlet(s) or equipment. Which of the following best describes this? A) The wiring between the panel and the devices B) The wiring from the utility to the panel C) The service entrance cables D) The transformer connections Answer: A Explanation: Branch circuits extend from the final overcurrent device to the load.
When sizing a branch circuit, which factor is most important? A) The conductor’s color B) The load it is expected to carry C) The distance from the panel

C) The installation method D) All of the above Answer: D Explanation: Conductor selection involves multiple factors to ensure safety and performance.

What does “neutral” refer to in a branch circuit? A) A conductor that carries unbalanced current back to the source B) The protective ground C) A conductor that carries the full load current D) A non-current-carrying conductor Answer: A Explanation: The neutral conductor completes the circuit by carrying any imbalance of current.
Which branch circuit wiring method is commonly used in residential installations? A) Cable assemblies (NM cable) B) Rigid metal conduit exclusively C) Underground feeders only D) Wireless transmission Answer: A Explanation: NM cable is commonly used in residential branch circuits for its ease of installation.
Branch circuit conductors must be installed in accordance with which document? A) National Electrical Code (NEC) B) Local weather guidelines C) Manufacturer brochures D) Building occupancy permits Answer: A Explanation: The NEC provides installation standards and safety requirements.
For circuits that supply outlets in wet locations, which additional protection is required? A) No additional protection B) GFCI protection C) Larger conductors only D) A disconnect switch Answer: B Explanation: GFCI protection is required by the NEC for outlets in wet or damp locations.
A “multiwire branch circuit” is characterized by: A) Sharing a common neutral between two or more circuits B) Having multiple hot conductors in separate conduits C) Only supplying lighting circuits D) Not requiring overcurrent protection Answer: A Explanation: Multiwire branch circuits share a neutral to save on conductor count while supplying separate circuits.

When calculating branch circuit loads, which of the following must be considered? A) Continuous loads vs. noncontinuous loads B) Conductor color C) The circuit’s location in the building D) The type of electrical panel Answer: A Explanation: Continuous loads require different sizing considerations than noncontinuous loads.
In branch circuit wiring, the term “saturation” typically refers to: A) A fully loaded circuit B) The insulation’s maximum temperature C) The full use of conduit space D) The neutral conductor carrying too much current Answer: A Explanation: A saturated circuit is one that is operating at or near its maximum load.
What is the recommended conductor insulation type for indoor branch circuits? A) THHN/THWN B) Underground feeder cable C) Bare copper D) Aluminum foil insulated Answer: A Explanation: THHN/THWN insulation is common for indoor wiring due to its thermal ratings and durability.
Which device is typically installed in a branch circuit to protect against short circuits? A) Ground rod B) Circuit breaker C) Transformer D) Capacitor Answer: B Explanation: Circuit breakers interrupt current flow during a short circuit to protect wiring.
In residential wiring, which color is most commonly used for the neutral conductor? A) Black B) Red C) White D) Green Answer: C Explanation: The neutral conductor is typically white in residential wiring.
In branch circuits, the term “load” refers to: A) The total current drawn by connected devices B) The physical weight of the wiring C) The number of conductors D) The distance from the panel Answer: A

D) A circuit that uses multiwire branch circuit wiring Answer: B Explanation: Dedicated circuits are used for equipment that requires its own circuit for safety or performance reasons.

What is the primary purpose of the equipment grounding conductor in a branch circuit? A) To carry operating current B) To provide a fault current path C) To serve as the neutral D) To supply power to devices Answer: B Explanation: The equipment grounding conductor carries fault current to help trip overcurrent devices.
In branch circuits, “cable assemblies” such as NM cable are typically used for: A) Exposed outdoor wiring B) Indoor residential wiring C) Underground high-voltage applications D) Temporary wiring only Answer: B Explanation: NM cable (Romex) is most commonly used for indoor residential wiring.
Which of the following is required when installing branch circuit wiring in damp locations? A) Use of armored cable only B) Use of wiring rated for damp conditions and GFCI protection C) No additional requirements D) Use of bare conductors Answer: B Explanation: Damp locations require conductors with proper insulation ratings and GFCI protection for safety.
For branch circuits that include receptacles in kitchens, the NEC requires: A) No special protection B) GFCI protection C) A dedicated transformer D) Use of only metal boxes Answer: B Explanation: Kitchens and other wet areas must be protected by GFCI devices per NEC requirements.
The term “circuit capacity” in branch circuits refers to: A) The number of devices connected B) The maximum current the circuit can safely supply C) The physical size of the wiring D) The voltage of the supply Answer: B Explanation: Circuit capacity is determined by the conductor size and overcurrent device ratings.

Section 5. Wiring Methods and Materials (Questions 111–

Which wiring method involves using metal conduits to protect conductors? A) Nonmetallic-sheathed cable (NM) B) Rigid metal conduit (RMC) C) Underground feeder cable D) Open wiring Answer: B Explanation: Rigid metal conduit is used to provide robust physical protection for conductors.
Raceways are primarily used to: A) Increase conductor ampacity B) Organize and protect wiring C) Connect transformers D) Serve as ground rods Answer: B Explanation: Raceways route and protect wiring from physical damage.
Which material is commonly used for nonmetallic raceways? A) PVC B) Copper C) Aluminum D) Steel Answer: A Explanation: PVC is a common nonmetallic raceway material due to its insulation and durability.
Underground wiring methods typically require which of the following? A) Direct burial cable rated for underground use B) Exposed NM cable C) Only metallic conduit D) No conduit Answer: A Explanation: Underground installations must use cables or conduits rated for burial and moisture.
Electrical boxes are used to: A) Connect conductors and house device terminations B) Increase voltage C) Act as service disconnects D) Provide overcurrent protection Answer: A Explanation: Boxes safely contain connections and devices such as receptacles and switches.

Wyoming (WY) 385 Journeyman Electrician Practice Exam, Exams of Technology

Related documents

Partial preview of the text

Download Wyoming (WY) 385 Journeyman Electrician Practice Exam and more Exams Technology in PDF only on Docsity!

Wyoming (WY) 385 Journeyman Electrician Practice Exam

Section 3. Feeders (Questions 61–80)

Section 4. Branch Circuits and Conductors (Questions 81 –

Section 5. Wiring Methods and Materials (Questions 111–