Article 100-110 Quiz02 – Electrician Exam Practice

Article 100-110 Quiz02

This quiz includes 20 questions selected from NEC Articles 100 to 110. The questions are chosen randomly, with no repeats from other quizzes—unless a particular question is used again on purpose because it relates to more than one topic, such as both cable ampacity and cable application.

If you spot any issues or have suggestions, you’re welcome to report questions or review the quiz. Your feedback matters, and contributions to help improve and refine the questions and quizzes are always appreciated.

This type of equipment directly consumes electric energy to perform its function.

1 / 20

_______________ equipment utilizes electric energy for electronic, electromechanical, chemical, heating, lighting, or similar purposes.

a. Heating

b. Signaling

c. Utilization

d. Cord-and-plug connected

An attachment plug is commonly used to connect a flexible cord to a power source.

2 / 20

An attachment plug is a(n):

a. Device that, by insertion in a receptacle, establishes a connection between the conductors of the attached flexible cord and the conductors connected permanently to the receptacle

b. Device that controls AC/DC voltage or AC/DC current, or both, and is used to charge a battery or other energy storage device

c. Device designed to open and close a circuit by nonautomatic means

d. A fitting intended to terminate a cord to a box or similar device and reduce the strain points of termination

This type of enclosure is designed for ease of access to the electrical components it houses.

3 / 20

A _______________ is an enclosure designed for surface mounting that has swinging doors or covers secured directly to and telescoping with the walls of the enclosure.

a. Switchgear

b. Panelboard

c. Cutout box

d. Cabinet

Safety is a primary concern here.

4 / 20

What does "Dead-Front" mean in electrical equipment?

a. Without live parts exposed to a person on the operating side.

b. Accessible only by qualified personnel.

c. Enclosed with a protective barrier.

d. Insulated to prevent electrical shocks.

It ensures electrical continuity.

5 / 20

What does "Bonded" mean?

a. Connected to establish electrical continuity and conductivity.

b. Shielded from electrical interferences.

c. Grounded through a grounding electrode.

d. Insulated to prevent conductivity.

The minimum working distance is determined by the voltage and whether live or grounded parts are present on the opposite side of the workspace.

6 / 20

A 120-208V 3-phase panel with exposed live parts on one side, and no live or grounded parts on the other side of the working space, must have a minimum clear working distance of _______________ in front of the panel.

a. 4 feet 6 inches

b. 3 feet 6 inches

c. 3 feet

d. 4 feet

This involves the final section of a circuit.

7 / 20

What does "Branch Circuit" refer to?

a. The connection between a main panel and subpanel.

b. A circuit running between panels.

c. The circuit conductors between the final overcurrent device and the outlets.

d. Conductors feeding a transformer.

Backup power is a key concept here.

8 / 20

What is an "Alternate Power Source"?

a. A public utility service always running in parallel.

b. One or more generator sets or battery systems intended to provide power during interruption of the normal electrical service.

c. A combination of multiple energy sources for efficiency.

d. A set of transformers used for backup power.

The interrupting rating must be sufficient to handle the maximum current the equipment may encounter without failure.

9 / 20

Equipment intended to interrupt current at other than fault levels shall have an interrupting rating at nominal circuit voltage _______________ the current that must be interrupted.

a. At least equal to

b. Matching

c. At most, less than

d. At least greater than

The clearance requirement increases when grounded parts are present opposite exposed live parts in the working space.

10 / 20

Exposed live parts on one side of the working space and grounded parts on the other side of the working space must have _______________ clearance in a 277-volt to ground.

a. 3 feet

b. 2 feet 6 inches

c. 4 feet

d. 3 feet 6 inches

Approval requires jurisdictional consent.

11 / 20

What is the meaning of "Approved" in NEC terminology?

a. Certified by the manufacturer.

b. Verified by any professional inspector.

c. Acceptable to the authority having jurisdiction.

d. Listed in an NFPA standard.

This device protects against overcurrent.

12 / 20

What is a "Circuit Breaker"?

a. emergency

b. A device that controls voltage variations in a circuit.

c. A device designed to open and close a circuit automatically or manually and to open the circuit automatically on overcurrent.

d. A fuse used to protect electrical circuits.

Duration is key here.

13 / 20

How is "Continuous Load" defined?

a. A load where the maximum current is expected to continue for 3 hours or more.

b. A load with varying current requirements.

c. A load that operates for less than 1 hour.

d. A load that operates continuously but below maximum capacity.

This definition includes multiple fixture types.

14 / 20

What is a "Bathroom" as defined in Article 100?

a. A room with plumbing fixtures.

b. An area including a sink with one or more of the following: a toilet, a urinal, a tub, a shower, or similar plumbing fixtures.

c. Any room with a sink.

d. A room containing only a toilet.

This relates to ease of physical access for maintenance.

15 / 20

What does the term "Accessible" as applied to equipment mean?

a. Capable of being reached only by trained professionals.

b. Capable of being reached for operation, renewal, and inspection without removing any part of the equipment.

c. Capable of being reached for operation, renewal, and inspection.

d. Capable of being reached quickly without using tools.

Focus on detecting and mitigating electrical arcs.

16 / 20

What is the primary function of an "Arc-Fault Circuit Interrupter (AFCI)"?

a. To monitor voltage stability in high-power circuits.

b. To serve as a backup overcurrent device.

c. To disconnect circuits during overcurrent conditions.

d. To provide protection from the effects of arc faults by de-energizing the circuit when detected.

This definition includes control of motor speed.

17 / 20

How is "Adjustable Speed Drive" defined in the NEC?

a. A device that provides constant speed to motors.

b. A power supply that adjusts motor voltages.

c. Power conversion equipment that provides a means of adjusting the speed of an electric motor.

d. A power supply that adjusts motor voltages.

Ampacity involves continuous current limits.

18 / 20

What does "Ampacity" refer to?

a. The resistance offered by a conductor at rated temperature.

b. The short-circuit current a conductor can sustain.

c. The minimum voltage a conductor can handle continuously.

d. The maximum current, in amperes, that a conductor can carry continuously under the conditions of use without exceeding its temperature rating.

The interrupting rating must be sufficient to handle the maximum current the equipment may encounter without failure.

19 / 20

Equipment intended to interrupt current at other than fault levels shall have an interrupting rating at nominal circuit voltage _______________ the current that must be interrupted.

a. At least equal to

b. At least greater than

c. At most, less than

d. Matching

The AHJ oversees code compliance.

20 / 20

What is an "Authority Having Jurisdiction (AHJ)"?

a. A third-party testing agency.

b. A licensed inspector hired for code compliance.

c. A federal agency responsible for all code enforcement.

d. A federal agency responsible for all code enforcement.

Your score is

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