COSC 325 – ELECTRICAL EXAM QUESTIONS WITH CORRECT
ANSWERS 2026/2027
Lock Out Tag Out (LOTO) -ANSWER-1. Protects you from Electricity
2. Isolated - isolates you from the power souse to keep it out/off and you safe
10 seconds -ANSWER-A generator MUST kick up within ______
277 -ANSWER-____ is NEVER line-to-line voltage
romex -ANSWER-is most common in residential
kVA -ANSWER-Transformers are measured in what units?
RMC, EMT, PVC -ANSWER-Which conduits have NO wire?
MC Cable -ANSWER-Which conduits have wire?
Conductor -ANSWER-____ is a material that allows electrons to easily move from atom to
atom. Ex. silver, copper, gold, aluminum, iron
Insulator -ANSWER-_____ is a material that does not allow electrons to easily move from
atom to atom. Ex. Glass, rubber, plastic, or paper
Phases -ANSWER-_____ Refers to the number of "hot" wires in a system
Transformers -ANSWER-_____ uses electromagnetism to step-up or step-down AC voltage
from one level to another
,Grounding -ANSWER-protects the occupants by providing a safe pathway for unwanted
electricity that might create a hazard
System Ground -ANSWER-_______ protects the entire distribution system of a residence
Equipment Ground -ANSWER-____ protects individual components connected to an
electrical system
GCFI (ground fault circuit interrupters) -ANSWER-_____ detects low level of leakage current
to ground and open the circuit in response
GCFI (ground fault circuit interrupters) -ANSWER-Located in bathrooms, kitchens, near
pools, fountains, and garages. designed to detects leakages of current
Transformer -ANSWER-What electrical equipment is this?
Weather Head -ANSWER-What electrical equipment is this?
Disconnect -ANSWER-The purpose of a _______ is to shut off power
AC (Alternating Current) -ANSWER-Type of current used in buildings
PVC Conduit -ANSWER-What does this picture show?
PVC Conduit -ANSWER-______ is used primarily underground because it holds up to
corrosion and decay better
RC -ANSWER-Once PVC conduit is above ground it transitions into _____
, RMC (Rigid Metal Conduit) -ANSWER-What type of conduit is this?
RMC (Rigid Metallic Conduit) -ANSWER-What type of conduit is this?
EMT (Electrical Metallic Tubing) -ANSWER-What type of conduit is this?
EMT (Electrical Metallic Tubing) -ANSWER-_______ is used into of the building, has the
thinnest walls, and uses set screw or compression fittings
RMC (Rigid Metallic Conduit) -ANSWER-_______ Has the thickest wall, used outside of the
building, and has threaded connections
Set Screw Fitting -ANSWER-What type of fitting is this?
Compression -ANSWER-What type of fitting is this?
Line Box -ANSWER-A ______ is a pull point that you can pull a wire through and then open
up a plate and push the wire through so you do not have to cut or twist the wire
MCB (Main circuit breaker) -ANSWER-What type of breaker is this?
Feeders -ANSWER-_____ are the wires and conduits that lead up to the panel
Branches -ANSWER-_______ leads the power away from the panel
MCB (Main Circuit breaker) -ANSWER-a panel with a _____ has one main breaker where all
the power goes through which can kill power to all branches connected at once
ANSWERS 2026/2027
Lock Out Tag Out (LOTO) -ANSWER-1. Protects you from Electricity
2. Isolated - isolates you from the power souse to keep it out/off and you safe
10 seconds -ANSWER-A generator MUST kick up within ______
277 -ANSWER-____ is NEVER line-to-line voltage
romex -ANSWER-is most common in residential
kVA -ANSWER-Transformers are measured in what units?
RMC, EMT, PVC -ANSWER-Which conduits have NO wire?
MC Cable -ANSWER-Which conduits have wire?
Conductor -ANSWER-____ is a material that allows electrons to easily move from atom to
atom. Ex. silver, copper, gold, aluminum, iron
Insulator -ANSWER-_____ is a material that does not allow electrons to easily move from
atom to atom. Ex. Glass, rubber, plastic, or paper
Phases -ANSWER-_____ Refers to the number of "hot" wires in a system
Transformers -ANSWER-_____ uses electromagnetism to step-up or step-down AC voltage
from one level to another
,Grounding -ANSWER-protects the occupants by providing a safe pathway for unwanted
electricity that might create a hazard
System Ground -ANSWER-_______ protects the entire distribution system of a residence
Equipment Ground -ANSWER-____ protects individual components connected to an
electrical system
GCFI (ground fault circuit interrupters) -ANSWER-_____ detects low level of leakage current
to ground and open the circuit in response
GCFI (ground fault circuit interrupters) -ANSWER-Located in bathrooms, kitchens, near
pools, fountains, and garages. designed to detects leakages of current
Transformer -ANSWER-What electrical equipment is this?
Weather Head -ANSWER-What electrical equipment is this?
Disconnect -ANSWER-The purpose of a _______ is to shut off power
AC (Alternating Current) -ANSWER-Type of current used in buildings
PVC Conduit -ANSWER-What does this picture show?
PVC Conduit -ANSWER-______ is used primarily underground because it holds up to
corrosion and decay better
RC -ANSWER-Once PVC conduit is above ground it transitions into _____
, RMC (Rigid Metal Conduit) -ANSWER-What type of conduit is this?
RMC (Rigid Metallic Conduit) -ANSWER-What type of conduit is this?
EMT (Electrical Metallic Tubing) -ANSWER-What type of conduit is this?
EMT (Electrical Metallic Tubing) -ANSWER-_______ is used into of the building, has the
thinnest walls, and uses set screw or compression fittings
RMC (Rigid Metallic Conduit) -ANSWER-_______ Has the thickest wall, used outside of the
building, and has threaded connections
Set Screw Fitting -ANSWER-What type of fitting is this?
Compression -ANSWER-What type of fitting is this?
Line Box -ANSWER-A ______ is a pull point that you can pull a wire through and then open
up a plate and push the wire through so you do not have to cut or twist the wire
MCB (Main circuit breaker) -ANSWER-What type of breaker is this?
Feeders -ANSWER-_____ are the wires and conduits that lead up to the panel
Branches -ANSWER-_______ leads the power away from the panel
MCB (Main Circuit breaker) -ANSWER-a panel with a _____ has one main breaker where all
the power goes through which can kill power to all branches connected at once
