Question 1
Which instrument is most appropriate to measure the voltage between two points in a residential branch circuit?
Question 2
Which unit is used to measure electric current?
Question 3
Which instrument is best suited to measure the current flowing in a live branch circuit without disconnecting any conductors?
Question 4
A digital multimeter set to measure voltage is connected in series with a load. What is the main concern?
Question 5
Which category of multimeter is required for testing at the service entrance of a commercial building?
Question 6
Which Category (CAT) rating is required for a multimeter used at the service entrance?
Question 7
Which test instrument is most appropriate for measuring current in a conductor without disconnecting the circuit?
Question 8
What is the unit of electrical current?
Question 9
What is the main purpose of a non-contact voltage tester when working on building wiring?
Question 10
What is the standard unit used to measure electrical current?
Question 11
Which instrument is best suited for checking the presence of voltage on a receptacle before working on it?
Question 12
A Level 3 apprentice is checking voltage at a motor starter. Which meter setting is most appropriate for measuring the line-to-line voltage on a three-phase 600 V system?
Question 13
Which meter is best for measuring current in a conductor without disconnecting it from the circuit?
Question 14
What is a non-contact voltage tester commonly used for in electrical work?
Question 15
Which tool is commonly used to detect the presence of voltage in a receptacle without making metal-to-metal contact?
Question 16
Which meter function should be selected to safely measure 120 V AC at a receptacle?
Question 17
Which test instrument is best suited for safely measuring voltage in a live branch circuit?
Question 18
Which meter function should you use to check for continuity of a conductor in a de-energized circuit?
Question 19
When using a digital multimeter to check for voltage on a receptacle, which setting should be used?
Question 20
Which tool is best for a quick, non-contact check to see if a conductor is energized?
Question 21
A non-contact voltage tester lights up and beeps when held near a conductor. What does this usually indicate?
Question 22
What is the primary purpose of a non-contact voltage tester when working on a receptacle circuit?
Question 23
Which instrument should be used to safely measure voltage on an energized 120/240 V panelboard?
Question 24
Which device is best suited for quickly checking whether a receptacle is energized without making direct metal contact with the conductors?
Question 25
A non-contact voltage tester lights up when held near a conductor. What does this indicate?
Question 26
When using a clamp-on ammeter to measure current on a feeder, how should it be applied?
Question 27
Which tool is most appropriate for verifying that a circuit is de-energized before working on it, in accordance with NFPA 70E?
Question 28
When checking for the presence of voltage on a medium-voltage circuit, which safety step is mandatory before trusting the tester?
Question 29
Which Multimeter measurement category (CAT) is required for testing at the service entrance or utility meter?
Question 30
When using a digital multimeter to measure voltage on an unknown circuit, which setting is safest to start with?