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Question 1
Transients are ___.
Correct Answer:
Short duration disturbances on electrical lines
Explanation:
Transients are brief disturbances in the electrical supply, lasting only a short time (typically milliseconds or a few cycles of 60 Hz) before the voltage and current return to normal. They happen when equipment switches on or off, during faults, or due to events like lightning. Because they are short-lived, they are described as short duration disturbances on electrical lines. A voltage surge is a common type of transient, but the key idea is the very brief nature of the disturbance. Oscillating noise, by contrast, implies a continuing or repeating irregular signal, not a single brief event.
Question 2
The long slot on a 15-ampere, 125-volt, receptacle is the ____ conductor.
Correct Answer:
Grounded
Explanation:
In a standard US 15-amp, 125-volt receptacle, the two flat slots are the hot and neutral conductors, with the round hole for the grounding conductor. The long (wide) slot is the neutral conductor, which is a grounded conductor because it’s bonded to the earth at the service equipment and serves as the return path for current. The hot slot is the ungrounded conductor that carries the voltage relative to neutral, and the grounding conductor provides a safety path to earth. Colors typically: neutral is white, hot is black, and ground is green or bare.
Question 3
What material is used for the recreation room ceiling finish when installing surface-mounted fluorescent luminaires?
Correct Answer:
Low-density cellulose fiberboard
Explanation:
When you’re mounting fluorescent luminaires on the ceiling, you want a finish that is lightweight, easy to cut around for fixture openings, and provides a smooth, reliable backing for the fixture hardware. Low-density cellulose fiberboard fits this need well: it’s thin, inexpensive, and easy to shape so you can create clean openings for the luminaires without adding a lot of weight or requiring heavy framing. This makes installation straightforward and keeps the ceiling surface uniform for the fixtures' mounting and diffusers. By contrast, heavier materials like gypsum board, masonite, or plywood are tougher to cut precisely around multiple fixtures, can add unwanted weight, and may be more prone to cracking or warping around openings, making them less convenient for recreation room ceilings with surface-mounted luminaires.
Question 4
What is the primary function of a GFCI device?
Correct Answer:
Trip when ground-fault current exceeds a small threshold
Explanation:
The main function of a GFCI is to protect people from electric shock by sensing any leakage of current to ground and interrupting the circuit quickly. It does this by continuously comparing the current flowing through the hot conductor and the return current on the neutral conductor. If the two aren’t equal, that difference means some current is escaping to ground (often through a person), and the device trips within milliseconds at a very small threshold, typically around a few milliamps. This rapid cut-off is what prevents serious shocks. It isn’t meant for surge protection, it doesn’t shut off power to the entire building in a fault, and it doesn’t monitor overcurrent in a conductor—that’s the job of other protective devices.
Question 5
A two-branch parallel circuit has a 30 ohm and a 15 ohm resistor. What is the total resistance?
Correct Answer:
10 ohms
Explanation:
In a parallel circuit, the total resistance comes from adding the reciprocals of each branch and then taking the reciprocal of that sum. For two resistors, 1/Rt = 1/R1 + 1/R2. Plugging in 30 ohms and 15 ohms: 1/Rt = 1/30 + 1/15 = 1/30 + 2/30 = 3/30 = 1/10. Inverting gives Rt = 10 ohms. This fits the general rule that the total resistance in parallel is always less than the smallest individual resistance, which here is 15 ohms, so 10 ohms makes sense. The other options don’t fit: 45 ohms would be the sum of the resistors (series), 60 ohms isn’t achievable with these values in parallel, and 25 ohms would be greater than the smallest resistor, which isn’t possible in parallel.
Question 1
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About this Exam

Prepare with the Get Wired 102 Introduction to the Basic Installation of Lighting Fixtures and Branch Circuits Practice Test practice quiz. This question bank includes 10 questions covering luminaire, conductors, parallel, circuit, and total. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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Get Wired 102 Introduction to the Basic Installation of Lighting Fixtures and Branch Circuits Practice Test

This practice set contains 10 questions from the matching question bank and focuses on luminaire, conductors, parallel, circuit, and total. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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