NCCER ELECTRICAL LEVEL 1 -MODULE 12 ELECTRICAL TEST EQUIPMENT QUESTIONS AND ANSWERS

A voltmeter is used to measure the value of a circuit's ____. Electromotive force A closed circuit is indicated by an ohmmeter reading of ______. Zero A meter that operates by sensing the strength of the electromagnetic field around the wire is a(n) ______. Clamp-on ammeter Current measurement in milliamps are typically read using a(n) _____. VOM An expected resistance of 1,000,000 ohms would be measured using a ______. Megohmmeter Which category rating covers installation that present the lowest risk? CAT I Which of the following is true with regard to meter safety? Thoroughly inspect all test equipment before each use. CAT I (Overvoltage Category) Electronic equipment and circuitry CAT II (Overvoltage Category) Single-phase loads such as small appliance tools, outlets at more than 30 feet from a CAT III source or 60 feet from a CAT IV source CAT III (Overvoltage Category) Three-phase motors, single-phase commercial or industrial lighting, switchgear, busduct and feeders in industrial plants. CAT IV (Overvoltage Category) Three-phase power at meter, service-entrance, or utility connection, any outdoor conductors, including signs, a pump, or exterior power generation (solar, wind, etc.). Which of the following is true regarding analog meters? Analog meters rely on a moving-coil meter movement. A voltmeter is used to test _____. Exact voltages In order to ensure safety, before measuring low voltages, you should first test for _____. Higher voltages An ammeter is used to measure ____. Current Clamp-on ammeters operate by _______. Sensing the strength of the electromagnetic field around the wire A meter with applied voltages of 500v or 1,000v is a(n) _____. Megohmmeter A motor rotation testers _____. Is used to identify the motor legs