Cosc 325 - Electrical, Cosc 325 -
Electrical Exam Questions And Answers
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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?
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