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

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• Dirty power is generally defined as having which characteristic?
• A three-branch parallel circuit has resistors of 27 Ω, 56 Ω, and 15 Ω. What is the total resistance?
• A combination circuit is a circuit that contains __.
• AFCI requirements for dwelling units are ___.
• What is the maximum open-circuit voltage for lighting equipment in or on homes?
• The circled E on a ballast nameplate indicates that the ballast is a(n) _____.
• In a series circuit, the current through all components is the same.
• A series circuit has a total resistance of 240 Ohms and a current flow of 4 A. What is the applied voltage?
• What is the function of a Metal Oxide Varistor (MOV) in electrical protection?
• A magnet that produces a magnetic field as a result of current flow in a conductor is called a(n) electromagnet.
• Branch circuit conductors shall have an ampacity ___ than the maximum to be served.
• In which NEC section is the voltage maximum for home lighting equipment referenced?
• Which quantity across a resistor is proportional to its resistance?
• The term 'load' refers to the amount of _____ in a circuit branch.
• Fluorescent ballasts for all indoor applications must be type ___.
• When more resistors are added in parallel, what happens to the total resistance?
• A series circuit has two resistors. The resistors dissipate 10 W and 15 W. What is the total power dissipation of the circuit?
• In a parallel circuit, the total resistance is ___ value resistance.
• In magnetic terminology, the term flux refers to which of the following?
• True or False: The lamp type is irrelevant as long as the wattage matches the ballast.
• Which area in a dwelling is not required to have AFCI protection for its branch-circuit outlets?
• The long slot on a 15-ampere, 125-volt, receptacle is the ____ conductor.
• A dual-rated conductor marked THHN/THWN is rated ____ when used in dry locations.
• What does the acronym GFCI stand for?
• A junction point of current paths is often called a __.
• Which statement correctly describes a Surge Protection Device's role in protecting electronics in a surge event?
• Circuits that have more than one path for current flow are ___ circuits.
• Which scenario describes proper use of a multi-wire branch circuit with safety?
• What happens if the line and load connections of an older style feed-through GFCI receptacle are reversed?
• A parallel circuit is composed of two 60 Ohms resistors. What is the total resistance?
• If total resistance is 165 Ω and applied voltage is 120 V, the current is approximately ___ A.
• A GFCI circuit breaker is ___ than a receptacle type.
• Which statement explains why you might redraw a circuit during combination analysis?
• The number of conductors permitted in rigid metal conduit is specified in ___.
• Rigid polyvinyl conduit is an example of which category of conduit?
• When selecting a trim for a recessed luminaire, which criterion is correct?
• Recessed luminaires that can be installed in direct contact with thermal insulation bear which Type mark?
• Feed-through GFCI receptacles allow 20 amp wiring to 15 amp devices downstream.
• The meaning of approved is ___.
• If one branch of a parallel circuit is open (infinite resistance), the total current is the sum of the currents in the remaining branches.
• Which location is not required to be GFCI protected?
• Two identical resistors of 40 Ω each are connected in parallel. What is the total resistance?
• What does a PF of 0.94 imply about the proportion of real power to apparent power?
• GFCI protection generally covers ___ in garages.
• A connection of three (or more) current paths is often called a _____?
• NEC 310.3(C) requires that conductors 8 AWG and larger must be ___ when installed in a raceway.
• When solving for both parallel and series circuits the rules stay the same when finding which quantity?
• Generally, voltages less than __ volts are considered safe from electrical shock hazards.
• Is it a Code requirement to install GFCI receptacles in a fully carpeted, finished recreation room in the basement?
• Which formula is applicable to finding the total resistance in a parallel circuit regardless of the number of resistors?
• In a surge protection device, the energy of a transient is absorbed by which component?
• Identify the term for a flexible connector between an outlet box and a luminaire.
• In a series circuit, the ___ is the sum of the individual resistances.
• In a series circuit, the voltage across each resistor adds up to the applied voltage.
• In a parallel circuit with a 150 Ω resistor and a 270 Ω resistor connected to a 120 V supply, what is the current through the 150 Ω resistor?
• A parallel circuit with a 10 Ω resistor and a 22 Ω resistor is connected to a 60 V supply. What is the current in the 10 Ω resistor?
• A parallel circuit is formed with two resistors of 60 ohms each. What is the total resistance of the circuit?
• In a series circuit, which statement about current is true?
• A circuit that has only one path for current flow is a ___ circuit?
• These ballasts contain internal ___ protection to protect against overheating.
• When installing a Type Non-IC fixture, insulation shall not be installed within how many inches of the side of the recessed luminaire?
• What color are the hot terminals on a standard grounding-type receptacle?
• In a series circuit, which quantity is the same at any point along the circuit?
• The current flow, resistor voltages, and/or resistances in a series circuit can be found by using ___ law?
• A two-branch parallel circuit has 2A of current in one branch and 3A in the other branch. Which branch is considered to have the larger load?
• Which locations typically require GFCI protection for receptacles?
• In a parallel circuit, the total current is the sum of the currents in each branch.
• In a parallel circuit consisting of a 12 V source and two resistors, 6 Ω and 12 Ω, which branch carries more current?
• SPD protection is necessary where?
• Is it permissible to install a Type Non-IC recessed luminaire directly against wood ceiling joists?
• In a series circuit, the voltage across each component adds up to the ___.
• In a surge protection context, what is the function of a Metal Oxide Varistor in an SPD?
• A parallel circuit with a 62 kΩ resistor and an 82 kΩ resistor across 480 V. What is the power of the 82-kΩ resistor?
• Which term describes a flexible connection between an outlet box and a luminaire?
• Transients on a power line can cause spikes or surges of energy that can damage delicate electronic components. What device is designed to mitigate this risk?
• Transients are ___.
• Feed through GFCI receptacles allow ___ downstream.
• The 'let go' current for a person in contact with live wires refers to the point at which muscle contractions will keep a person from releasing the wire.
• Which color is associated with the neutral terminal on most standard receptacles?
• A fluorescent ballast designed for two 40-watt lamps is rated at 85 VA. What is its power factor?
• Construction sites must have receptacle outlets used for temporary wiring protected by which mechanism?
• When installing single pole GFCI and AFCI circuit breakers in a panel, it is permissible to connect them to a multi-wire branch circuit.
• In parallel circuits, the voltage drop across any branch is the same as the ___.
• Connectors marked CO-ALR are suitable for use with aluminum, copper, or copper-clad conductors. Conductors not marked are for copper conductors only.
• Unless specifically designated, all recessed incandescent luminaires must be provided with factory-installed _____.
• Which exception to the GFCI requirement in garages is described as listed locking support and mounting receptacles used with compatible attachment fittings installed for serving a ceiling luminaire?
• What characterization describes a simple parallel circuit?
• A simple parallel circuit contains which of the following?
• In a parallel circuit, the total power equals which of the following?
• Who has the authority to determine code compliance in electrical installations?
• In a parallel circuit, the applied voltage across each branch is equal to what?
• What is the special shape and color of the grounding terminals on receptacle outlets and other devices?
• Code requires GFCI protection for which kitchen receptacles?
• What does AFCI stand for?
• For a parallel circuit, the sum of the powers in each branch represents which quantity?
• A parallel circuit with 120 Ω and 220 Ω resistors has a 240 V supply. What is the total circuit current?
• Which NEC article governs rigid polyvinyl conduit?
• What is the primary function of a GFCI device?
• In NEC terminology, a conductor other than a service conductor that has overcurrent protection ahead of its point of supply that exceeds the value permitted for similar conductors is called a ___.
• The exception to the GFCI requirement in a garage includes
• In a series circuit with two resistors, 10 Ω and 12 Ω, and 5 A flowing through each resistor, what is the total current in the circuit?
• Should you always match a fluorescent lamp's wattage and type designation to the ballast in the luminaire?
• May a GFCI receptacle be installed as a replacement in an old installation where the two-wire circuit has no equipment grounding conductor?
• Fluorescent ballasts are commonly rated in volt-amperes (VA). Which statement is true?
• The current in a parallel circuit splits among branches based on each branch's resistance; lower resistance draws more current.
• In residential garages, where must GFCI receptacles be installed?
• The ballast rating of 85 VA measures which quantity?
• What is the total wattage of two 40-W lamps?
• Arc fault protection is required for ___.
• A ballast rated for two 40-W lamps draws 80 W of real power. If its apparent power is 85 VA, what is the ballast power factor?
• What is the approximate total resistance of a parallel circuit containing 15 Ω, 30 Ω, and 60 Ω resistors?
• A three-resistor circuit has a total power of 25 W. Two of the resistors dissipate 10 W and 5 W respectively. How much power does the third resistor dissipate?
• A series circuit has a total resistance of 180 Ohms and an applied voltage of 120V. What is the current flow?
• Which statement best describes the requirement when selecting fluorescent lighting for a luminaire?
• If a series circuit has resistor values of 27 ohms, 56 ohms, and 82 ohms, the total resistance is?
• Surge protective devices are primarily used to protect equipment by which action?
• The suffix "B" in Type NM-B nonmetallic cable means that the conductors have an insulation temperature rated ____.
• Which statement about trimming a recessed luminaire is correct?
• In solving combination circuits, which action reduces the circuit to a simpler form?
• Magnetic lines of force are referred to as what?
• A method for finding total resistance of parallel resistors is which of the following?
• Which statement accurately reflects the relationship between lamp wattage, lamp type, and ballast in a luminaire?
• GFCIs are set to trip between milliamps.
• In circuit analysis, replacing a parallel block with a single resistor is described as using which form?
• In a series circuit, if two resistors dissipate 6 W and 9 W and the total power is 25 W, how much does the third resistor dissipate?
• According to the NEC, systems with voltage over how many volts must be grounded?
• Which feature distinguishes an electromagnet from a permanent magnet?
• What does ampacity refer to?
• In a series circuit, which property remains constant along the path?
• What is the best method to answer a code question in the NEC?
• Which device is designed to control fluorescent lighting loads?
• In a multi-wire branch circuit, which safety requirement is correct?
• What term describes a flexible connection between an outlet box and a luminaire?
• A method for finding total resistance of parallel resistors is ___.
• In a series circuit with two resistors, the total resistance is equal to the ___ of the two resistors?
• On a standard grounding-type receptacle, what color are the grounded terminals?
• In a three-resistor series circuit with an applied voltage of 180 V, the voltage across the first resistor is 50 V and the second resistor is 125 V. The voltage across the third resistor is ___.
• What two types of receptacles may be used to replace a defective receptacle in an older home wired with knob-and-tube wiring that has no equipment grounding means in the box?
• A device that is designed to open and disconnect a circuit in the event of excessive current is a ___.
• Which device is designed to interrupt current and can be reset?
• A two-branch parallel circuit has a 30 ohm and a 15 ohm resistor. What is the total resistance?
• NM-B is a nonmetallic cable used in branch circuits. Which statement best describes NM-B?
• Can an incandescent lamp dimmer be used to control a fluorescent lamp load?
• The let-go current is the point at which muscle contractions will prevent release.
• To identify which paths are series and which paths are parallel, you should which of the following?
• A frequent step in solving combination circuits is which of the following?
• The total current in a parallel circuit is equal to the sum of the currents through all the circuit branches.
• In a series circuit, the current is the same through all components.
• The installation of a surface-mounted fluorescent luminaire on a recreation room ceiling finished with low-density cellulose fiberboard would have what label on the luminaire?
• To retrofit a two-wire ( ungrounded) receptacle for safety, what upgrade is commonly recommended?
• What is the unit of electrical power?
• A series circuit is a circuit that has only one path for ___ flow.
• In solving a combination circuit, it is necessary to simplify a parallel block to which form?
• Rigid polyvinyl conduit is permitted to do all of the following, except for.
• If a ballast PF is 0.94, what percentage of the apparent power is real power?
• In parallel circuits, the voltage drop across any branch is the same as the __.
• Resistors which have only one ohmic value are called _____ resistors.
• What current through a female human being will cause muscle contractions that will keep her from letting go of the live wire?
• _____ receptacles can be used as replacements for two-wire (ungrounded) receptacles.
• Which area is included when calculating the usable area of a dwelling to compute the required lighting load?
• A recessed luminaire bears no marking indicating it is 'Identified for Through-Wiring'. Is it permitted to run branch-circuit conductors other than the conductors that supply the luminaire through the integral junction box?
• GFCI devices trip at a ground-fault current of at or above how many milliamperes?
• The rating of 85 VA on a ballast refers to which electrical quantity?
• What leakage current range must trip an IDCI?
• What does the circled E on a ballast nameplate indicate?
• A 30-ohm resistor is connected to a 4-volt supply. How many watts will this resistor dissipate?
• The two resistors in a series circuit have voltages of 25 V and 60 V. The applied voltage is?
• Is a receptacle required on a 3ft (914 mm) wall space behind a door that is normally left open?
• In series circuits, the quantity that remains the same at every point in the circuit is the?
• Factory-installed Thermal Protection in recessed incandescent luminaires is intended to prevent overheating.
• In a parallel circuit, the total current is equal to the ___ of the individual branch circuits.
• Small appliance receptacle outlets __ required to be included in the 3 volt-ampere per square foot load calculation.
• Which equation correctly relates voltage, current, and resistance in Ohm's law?
• If two resistors have equal value and are connected in parallel, the total resistance is half of one resistor.
• In a series circuit, which statement describes the relationship between the voltages across the resistors and the applied voltage?
• In an old installation without equipment grounding, can a GFCI receptacle be used as a replacement for a defective outlet?
• In a parallel circuit, the amount of current flow in a branch is known as the ___ of the branch.
• What material is used for the recreation room ceiling finish when installing surface-mounted fluorescent luminaires?
• An old nongrounded non-GFCI bathroom receptacle must be replaced with what type?
• What does SPD stand for?