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This exam assesses journeyman-level expertise in industrial electrical systems. It covers complex wiring, system troubleshooting, installation, maintenance, code interpretation, and safety protocols. Candidates must demonstrate competence in Wisconsin electrical regulations and professional skills to work independently on industrial electrical projects.
Typology: Exams
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Question 1. According to Ohm's Law, if the voltage across a resistor is 120 volts and the resistance is 60 ohms, what is the current flowing through the resistor? A) 2 Amperes B) 0.5 Amperes C) 120 Amperes D) 60 Amperes Answer: A Explanation: Ohm's Law states I = V / R. Substituting the values, I = 120V / 60Ω = 2A. Question 2. Watt’s Law relates power, voltage, and current. Which formula correctly expresses this relationship?
Answer: B Explanation: Watt’s Law states that power (P) equals voltage (V) times current (I), or P = V * I. Question 3. In a series circuit, how does the total resistance compare to the individual resistances? A) It is less than any individual resistance B) It is equal to the sum of all resistances C) It is the average of all resistances
Question 5. Which of the following is true about AC circuit theory? A) Impedance includes resistance only B) Reactance is the opposition to current flow caused by inductance and capacitance C) Power factor is always equal to 1 D) Resistance varies with frequency Answer: B Explanation: Reactance is the opposition to AC due to inductors and capacitors, and it varies with frequency. Question 6. Magnetism is primarily associated with which of the following? A) Electric charge
B) Moving electric charges or currents C) Static electric fields D) Resistance in conductors Answer: B Explanation: Magnetic fields are generated by moving electric charges or currents. Question 7. Which device operates on electromagnetic principles to convert mechanical energy into electrical energy? A) Transformer B) Generator C) Rectifier D) Capacitor
Question 9. Which unit measures electrical potential difference? A) Ampere B) Volt C) Ohm D) Watt Answer: B Explanation: Voltage (potential difference) is measured in volts. Question 10. What instrument would you use to measure the current flowing through a circuit? A) Voltmeter B) Ammeter
C) Ohmmeter D) Megohmmeter Answer: B Explanation: An ammeter measures current flow in amperes. Question 11. Which safety device is designed specifically to protect against arc flash hazards? A) GFCI B) Circuit breaker C) Arc-fault circuit interrupter (AFCI) D) Fuse Answer: C
Question 13. Which PPE is most critical when working on energized electrical circuits? A) Safety glasses B) Insulated gloves and arc-rated clothing C) Steel-toed boots D) Hard hat Answer: B Explanation: Insulated gloves and arc-rated clothing protect against electrical shocks and arc flash hazards. Question 14. When performing first aid for electrical shock, what is the first step? A) Cut the power supply immediately
B) Call emergency services C) Remove the person from the source if safe D) Apply ice packs Answer: C Explanation: The first step is to remove the person from the electrical source if it is safe to do so, then provide first aid. Question 15. Which NEC article covers grounding and bonding principles? A) Article 250 B) Article 300 C) Article 400 D) Article 700
Question 17. Which article of the NEC covers wiring methods and materials? A) Article 300 B) Article 400 C) Article 250 D) Article 700 Answer: A Explanation: Article 300 deals with general wiring methods and materials. Question 18. Which type of conduit is most commonly used for indoor, exposed wiring? A) RMC B) EMT
Answer: B Explanation: EMT (Electrical Metallic Tubing) is commonly used for indoor, exposed wiring due to its ease of installation. Question 19. What is the purpose of a box fill calculation? A) To determine the number of conductors in a conduit B) To size the fuse for a circuit C) To calculate voltage drop D) To select the correct circuit breaker Answer: A
Question 21. When installing a motor, what is the primary consideration for conductor sizing? A) Voltage drop B) Motor full load current C) Ambient temperature correction D) All of the above Answer: D Explanation: Conductor sizing for motors considers full load current, voltage drop, and ambient temperature corrections. Question 22. Which transformer connection type is characterized by each phase winding being connected in a delta configuration? A) Wye-connected
B) Delta-connected C) Open-delta D) Scott-connected Answer: B Explanation: In a delta connection, each phase winding is connected in a triangular (delta) configuration. Question 23. What is the primary function of a GFCI? A) To protect against overcurrent B) To protect against ground faults C) To prevent arc faults D) To regulate voltage
Question 25. In hazardous locations, what is a key requirement for sealed wiring methods? A) Use of explosion-proof enclosures B) Use of flexible cords C) Use of standard conduit fittings D) No special requirements Answer: A Explanation: Sealed wiring methods in hazardous areas require explosion- proof enclosures to contain any sparks or explosions. Question 26. Which type of industrial equipment often requires special grounding considerations due to potential electrical noise?
A) HVAC systems B) Data processing systems C) Lighting fixtures D) Receptacles Answer: B Explanation: Data processing systems are sensitive to electrical noise, requiring proper grounding and shielding. Question 27. For emergency systems, which NEC article specifies requirements for emergency power supplies? A) Article 700 B) Article 701 C) Article 702
