Electrical Test Equipment (NWLC) – Study Guide and Practical Reference Material
What two functions of the digital multimeter are most commonly used by line workers? -
correct answer ✔✔AC voltage and continuity functions
Finish the sentence (as written in the text) regarding reading voltage with a multimeter. - correct
answer ✔✔When reading voltage, all possible voltage combinations are checked.
What is the continuity tester of a multimeter used for when speaking of transformers? - correct
answer ✔✔Proving the integrity of transformer coils.
What does a clamp-on ammeter measure? - correct answer ✔✔Current in the hot legs and
neutral of secondary circuits and services.
How does the ammeter determine the current reading? - correct answer ✔✔Based on the
strength of the magnetic field around the conductor.
When would an ammeter be used on a primary line? - correct answer ✔✔For checking load
balances and conductor loading. You can also check current flow prior to installing jumpers
during live-line maintenance.
When would recording voltmeters and ammeters be used? - correct answer ✔✔When a
problem exist on a secondary circuit or service.
What is the purpose of a phase sequence indicator? - correct answer ✔✔It's used as a
reference tool to ensure that the phase sequence of a three-phase service is not accidentally
changed.
What two functions of the digital multimeter are most commonly used by line workers? -
correct answer ✔✔AC voltage and continuity functions
Finish the sentence (as written in the text) regarding reading voltage with a multimeter. - correct
answer ✔✔When reading voltage, all possible voltage combinations are checked.
What is the continuity tester of a multimeter used for when speaking of transformers? - correct
answer ✔✔Proving the integrity of transformer coils.
What does a clamp-on ammeter measure? - correct answer ✔✔Current in the hot legs and
neutral of secondary circuits and services.
How does the ammeter determine the current reading? - correct answer ✔✔Based on the
strength of the magnetic field around the conductor.
When would an ammeter be used on a primary line? - correct answer ✔✔For checking load
balances and conductor loading. You can also check current flow prior to installing jumpers
during live-line maintenance.
When would recording voltmeters and ammeters be used? - correct answer ✔✔When a
problem exist on a secondary circuit or service.
What is the purpose of a phase sequence indicator? - correct answer ✔✔It's used as a
reference tool to ensure that the phase sequence of a three-phase service is not accidentally
changed.
