NCCER ELECTRICAL LEVEL 1 -Module 12 Electrical
Test Equipment
A voltmeter is used to measure the value of a circuit's ____. - ANSWER-
Electromotive force
A closed circuit is indicated by an ohmmeter reading of ______. - ANSWER-Zero
A meter that operates by sensing the strength of the electromagnetic field around
the wire is a(n) ______. - ANSWER-Clamp-on ammeter
Current measurement in milliamps are typically read using a(n) _____. - ANSWER-
VOM
An expected resistance of 1,000,000 ohms would be measured using a ______. -
ANSWER-Megohmmeter
Which category rating covers installation that present the lowest risk? - ANSWER-
CAT I
Which of the following is true with regard to meter safety? - ANSWER-Thoroughly
inspect all test equipment before each use.
CAT I (Overvoltage Category) - ANSWER-Electronic equipment and circuitry
CAT II (Overvoltage Category) - ANSWER-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) - ANSWER-Three-phase motors, single-phase
commercial or industrial lighting, switchgear, busduct and feeders in industrial
plants.
CAT IV (Overvoltage Category) - ANSWER-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? - ANSWER-Analog meters
rely on a moving-coil meter movement.
A voltmeter is used to test _____. - ANSWER-Exact voltages
In order to ensure safety, before measuring low voltages, you should first test for
_____. - ANSWER-Higher voltages
An ammeter is used to measure ____. - ANSWER-Current
Test Equipment
A voltmeter is used to measure the value of a circuit's ____. - ANSWER-
Electromotive force
A closed circuit is indicated by an ohmmeter reading of ______. - ANSWER-Zero
A meter that operates by sensing the strength of the electromagnetic field around
the wire is a(n) ______. - ANSWER-Clamp-on ammeter
Current measurement in milliamps are typically read using a(n) _____. - ANSWER-
VOM
An expected resistance of 1,000,000 ohms would be measured using a ______. -
ANSWER-Megohmmeter
Which category rating covers installation that present the lowest risk? - ANSWER-
CAT I
Which of the following is true with regard to meter safety? - ANSWER-Thoroughly
inspect all test equipment before each use.
CAT I (Overvoltage Category) - ANSWER-Electronic equipment and circuitry
CAT II (Overvoltage Category) - ANSWER-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) - ANSWER-Three-phase motors, single-phase
commercial or industrial lighting, switchgear, busduct and feeders in industrial
plants.
CAT IV (Overvoltage Category) - ANSWER-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? - ANSWER-Analog meters
rely on a moving-coil meter movement.
A voltmeter is used to test _____. - ANSWER-Exact voltages
In order to ensure safety, before measuring low voltages, you should first test for
_____. - ANSWER-Higher voltages
An ammeter is used to measure ____. - ANSWER-Current
