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COSC 325 - Electrical, COSC 325 - Electrical Exam Questions and Answers
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COSC 325 - Electrical, COSC 325 - Electrical Exam
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COSC 325 - Electrical, COSC 325 -Electrical Exam
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
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