394 Copyright Goodheart-Willcox Co., Inc. 6. The _____ function on a multimeter allows a technician to test devices that conduct current in only one direction. A. capacitance B. frequency C. continuity D. diode check 7. Which multimeter function allows a technician to test for an unbroken path between two points in a circuit? A. Capacitance B. Inductance C. Continuity D. Diode check 8. Which instrument shows the relationship between a circuit’s true power and apparent power? A. Power factor meter B. Wattmeter C. Voltmeter D. Ohmmeter 9. Which instrument measures only the true power consumed by an electrical load? A. Power factor meter B. Wattmeter C. Voltmeter D. Ohmmeter 10. Megohmmeters are used to test _____. A. electrical insulation B. full load amperage draw C. relay operation D. V-belt alignment 11. A megohm reading of _____ or higher indicates an excellent condition. A. 100 Ω B. 10,000 Ω C. 10 MΩ D. 100 MΩ 12. Electrical diagrams are often available _____. A. on the inside of equipment access panels B. in the equipment’s service and installation manuals C. on the manufacturer’s website D. All of the above. 13. In the United States, electrical drawing standards and symbols are specified by _____. A. NEMA B. IEC C. RSES D. NATE 14. _____ diagrams clearly show the parallel paths through which electricity can travel through the circuit. A. Voltage B. Continuity C. Pictorial D. Ladder 15. In a ladder diagram, the circuit is completed when _____. A. a switching device is open on every rung B. all switching devices on the rungs are closed C. a coil or solenoid is added D. None of the above. 16. _____ diagrams show the relationship of components to each other. A. Voltage B. Continuity C. Pictorial D. Ladder 17. Which of the following might a technician learn from the initial inspection step of the troubleshooting process? A. Recent work performed on the electrical system. B. Sounds or smells while the system operates. C. Potential fault. D. Sparking at terminals and connections. 18. During which step of the troubleshooting process is the electrical system always considered? A. Test system for proper operation. B. Repair. C. Initial inspection. D. Customer interview. 19. Ensure a circuit is de-energized by _____. A. disconnecting the circuit at the disconnect box B. removing the device from the circuit C. taking multiple voltage measurements at different locations in the circuit D. None of the above. 20. The _____ strategy of troubleshooting involves checking the voltage at the load device first before moving in sequence along the circuit path. A. hopscotching B. from load outward C. from control inward D. divide and conquer 21. The _____ strategy of troubleshooting involves using the ladder diagram to take several voltage measurements from left to right through each switching device. A. hopscotching B. from load outward C. from control inward D. divide and conquer