Download UTAH JEME Journeyman Electrician Exam and more Exams Technology in PDF only on Docsity!
Question 1. What is the primary purpose of the National Electrical Code (NEC)? A) To establish mandatory safety standards for all electrical installations B) To provide voluntary guidelines for electrical work C) To regulate only residential electrical wiring D) To specify the design of electrical appliances Answer: A Explanation: The NEC's primary purpose is to establish mandatory safety standards for electrical installations to protect people and property from electrical hazards. Question 2. Which NEC article covers the general requirements for electrical equipment examination and approval? A) Article 110 B) Article 210 C) Article 250 D) Article 300 Answer: A Explanation: Article 110 addresses the examination, identification, and approval of electrical equipment to ensure safety and compliance. Question 3. What is the definition of a qualified person according to the NEC? A) Someone trained and authorized to perform electrical work safely B) Any individual working near electrical equipment
C) A person with a general understanding of electrical systems D) An electrician licensed in another state Answer: A Explanation: A qualified person is someone who has received proper training and has the knowledge to work safely on electrical systems, per NEC definitions. Question 4. In electrical installations, what clearance is generally required in front of electrical equipment? A) 3 feet B) 30 inches C) 6 feet 6 inches D) 10 feet Answer: C Explanation: The NEC generally requires a minimum working clearance of 6 feet 6 inches in front of electrical equipment to ensure safe access and maintenance. Question 5. Which of the following is NOT considered a hazardous location as per the NEC? A) Class I, Division 1 B) Class II, Division 2 C) Wet location in a bathroom D) Dry, non-classified storage room
Question 8. What is the purpose of a GFCI (Ground-Fault Circuit Interrupter)? A) To prevent overloads in branch circuits B) To protect against ground-faults that could cause electric shock C) To reduce voltage drop D) To control motor speed Answer: B Explanation: GFCIs detect ground-faults and quickly shut off power to prevent electric shock, especially in wet or damp locations. Question 9. Which type of conduit is most suitable for underground installations where flexibility is needed? A) Rigid Metal Conduit (RMC) B) Liquidtight Flexible Metal Conduit (LFMC) C) EMT D) PVC conduit Answer: B Explanation: LFMC offers flexibility suitable for underground or outdoor installations where movement or flexibility is required. Question 10. For a dwelling unit, what is the minimum AFCI protection requirement?
A) Only for bedroom circuits B) For all living area branch circuits C) Only for kitchen outlets D) AFCI is not required in dwelling units Answer: B Answer: B Explanation: The NEC requires AFCI protection for all branch circuits serving living areas in dwelling units to prevent fires caused by arc faults. Question 11. Which of the following is a key consideration when sizing conductors for branch circuits? A) The length of the conductor alone B) The ampacity of the conductor based on the load C) The color of the conductor insulation D) The number of switches on the circuit Answer: B Explanation: Conductors must be sized based on their ampacity to safely carry the load current, according to NEC tables and rules. Question 12. How is a grounded conductor identified at the terminal connection? A) By its color, typically white or gray B) By a green screw
Answer: B Answer: B Explanation: Rigid Nonmetallic Conduit (RNC) and other approved conduit types like RMC or IMC are suitable for outdoor wet locations due to their durability and protection. Question 15. When installing a receptacle in a bathroom, which type of protection is mandated by the NEC? A) AFCI only B) GFCI protection C) Surge protection only D) No special protection is required Answer: B Explanation: GFCI protection is required for receptacles in bathrooms to reduce the risk of electric shock. Question 16. Which NEC article addresses the requirements for wiring methods and materials? A) Article 300 B) Article 400 C) Article 310 D) Article 500 Answer: A
Explanation: Article 300 covers general wiring methods and materials, including conductors, raceways, and installation requirements. Question 17. What is the primary function of a motor starter? A) To increase motor voltage B) To start and stop a motor safely and protect it from overload C) To convert AC to DC power for the motor D) To control lighting circuits only Answer: B Explanation: Motor starters control motor operation, providing safe starting, stopping, and overload protection. Question 18. Which of the following is a typical method of troubleshooting a motor control circuit? A) Checking for open circuits with a multimeter B) Replacing the entire circuit without testing C) Ignoring control relays and switches D) Using only visual inspection without testing tools Answer: A Explanation: Troubleshooting involves using tools like a multimeter to check for open circuits, shorts, or faulty components.
D) A fault that only occurs in high-voltage systems Answer: B Answer: B Explanation: An arc-fault is an unintended electrical arc caused by damaged or deteriorated wiring that can generate heat and ignite fires, hence the need for AFCI protection. Question 22. What is the typical minimum working space required in front of electrical equipment rated 1200A or less? A) 3 feet B) 30 inches C) 6 feet 6 inches D) 10 feet Answer: C Explanation: The NEC requires a minimum working space of 6 feet 6 inches in front of equipment rated 1200A or less for safe operation and maintenance. Question 23. Which of the following is NOT a typical type of raceway used for wiring? A) EMT (Electrical Metallic Tubing) B) Rigid Metal Conduit (RMC) C) Flexible Nonmetallic Tubing D) Liquid-tight Flexible Metal Conduit (LFMC)
Answer: C Explanation: Liquid-tight Flexible Metal Conduit (LFMC) is a flexible conduit, but "Flexible Nonmetallic Tubing" is not a standard raceway type; nonmetallic flexible conduit exists but is less common. Question 24. For a dwelling, what is the minimum size of the grounding electrode conductor for a metal water pipe system? A) 8 AWG B) 6 AWG C) 10 AWG D) 4 AWG Answer: A Explanation: The NEC typically requires a minimum size of 8 AWG for grounding electrode conductors connected to metal water pipes. Question 25. Which NEC article covers the requirements for grounding electrode systems? A) Article 250 B) Article 300 C) Article 400 D) Article 600 Answer: A
Question 28. Which NEC article pertains to the installation and use of electrical metallic tubing (EMT)? A) Article 358 B) Article 300 C) Article 400 D) Article 250 Answer: A Explanation: Article 358 covers the installation, use, and requirements for electrical metallic tubing (EMT). Question 29. What is a common application for liquidtight flexible metal conduit (LFMC)? A) Indoor lighting fixtures B) Outdoor, wet, or corrosive environments C) Underground conduit runs only D) Nonmetallic applications only Answer: B Explanation: LFMC is designed for outdoor, wet, or corrosive environments due to its liquid-tight and flexible properties. Question 30. Which device is used to protect motors from overload conditions? A) Fuse
B) Overcurrent protective device (OCPD) with overload relay C) GFCI D) Circuit breaker only for branch circuits Answer: B Explanation: Overload relays, often integrated into motor starters, protect motors from overheating due to overloads. Question 31. What is the main function of a one-line diagram? A) To show the physical layout of wiring B) To illustrate the electrical flow and connections in a simplified format C) To display the circuit breaker ratings only D) To design the building’s plumbing system Answer: B Explanation: A one-line diagram provides a simplified electrical schematic showing the flow and connection of components. Question 32. When performing conduit fill calculations, what is one factor to consider? A) The length of the conduit B) The number and size of conductors C) The type of conduit material D) The color of conductors
Question 35. In motor control, what does a start relay do? A) It steps down voltage for the motor B) It energizes the motor's contactor to start the motor C) It provides overload protection only D) It acts as a fuse for the motor circuit Answer: B Explanation: A start relay energizes the contactor coil, closing the contacts to supply power to the motor. Question 36. Which type of conduit is most appropriate for a high-abrasion industrial environment? A) EMT B) PVC conduit C) Rigid Metal Conduit (RMC) D) Liquidtight Flexible Metal Conduit (LFMC) Answer: C Explanation: RMC provides the highest mechanical protection suitable for harsh industrial environments. Question 37. What does the term "deteriorating agents" refer to in electrical installations? A) Agents that cause damage to insulation or equipment over time, like moisture or chemicals
B) Agents that improve system performance C) Agents used to clean electrical components D) Agents that denote hazardous locations Answer: A Answer: A Explanation: Deteriorating agents such as moisture, chemicals, or heat can degrade insulation and materials, affecting safety and performance. Question 38. How should conductors be supported in conduit systems? A) Every 4.5 feet in raceways and every 10 feet in cable assemblies B) Only at the ends of the conduit C) Support is not necessary if conductors are insulated D) Support only in outdoor locations Answer: A Explanation: NEC requires conductors to be supported at specified intervals to prevent stress and damage. Question 39. What is the function of a disconnecting means? A) To provide a means to disconnect power for maintenance or emergencies B) To step down voltage C) To protect against overloads D) To connect multiple circuits together
Question 42. Which of the following is most appropriate for wiring a mobile home or manufactured home? A) NM cable (Type NM) B) Rigid Metal Conduit (RMC) C) Special mobile home wiring methods per NEC D) Open wiring on insulators Answer: C Explanation: NEC specifies special wiring methods for mobile and manufactured homes to ensure safety and code compliance. Question 43. In which type of location are explosion-proof fixtures typically required? A) Hazardous (Class I, Division 1) locations B) Residential living rooms C) Commercial office spaces D) Dry storage rooms Answer: A Answer: A Explanation: Explosion-proof fixtures are mandated in hazardous locations where flammable gases or vapors may be present.
Question 44. Which NEC article addresses the requirements for emergency systems? A) Article 700 B) Article 600 C) Article 500 D) Article 770 Answer: A Explanation: Article 700 covers emergency systems, including their installation, testing, and maintenance. Question 45. When installing a GFCI in a kitchen countertop receptacle, what is the minimum required distance from the sink? A) 6 inches B) 12 inches C) Any distance, as long as GFCI is installed D) 24 inches Answer: A Explanation: The NEC requires GFCI protection for receptacles serving kitchen countertops within 6 inches of the sink. Question 46. What is the main advantage of using metal conduit for wiring? A) Improved mechanical protection and durability B) Lower cost compared to other raceways
