COSC 325 - ELECTRICAL, COSC 325 - ELECTRICAL EXAM UPDATED ACTUAL QUESTIONS AND CORRECT ANSWERS

COSC 325 - ELECTRICAL, COSC 325 - ELECTRICAL EXAM
UPDATED ACTUAL QUESTIONS AND CORRECT
ANSWERS

Question:
1. 1. Protects you from Electricity
2. Isolated - isolates you from the power souse to keep it out/off and you safe
Answer:
Lock Out Tag Out (LOTO)

Question:
2. A generator MUST kick up within ______
Answer:
10 seconds

Question:
3. ____ is NEVER line-to-line voltage
Answer:
277

Question:
4. is most common in residential
Answer:
romex

Question:
5. Transformers are measured in what units?
Answer:
kVA

Question:
6. Which conduits have NO wire?
Answer:
RMC, EMT, PVC

Question:
7. Which conduits have wire?
Answer:
MC Cable

Question:
8. ____ is a material that allows electrons to easily move from atom to atom. Ex. silver, copper, gold,
aluminum, iron

,Answer:
Conductor

Question:
9. _____ is a material that does not allow electrons to easily move from atom to atom. Ex. Glass, rubber,
plastic, or paper
Answer:
Insulator

Question:
10. _____ Refers to the number of "hot" wires in a system
Answer:
Phases

Question:
11. _____ uses electromagnetism to step-up or step-down AC voltage from one level to another
Answer:
Transformers

Question:
12. protects the occupants by providing a safe pathway for unwanted electricity that might create a hazard
Answer:
Grounding

Question:
13. _______ protects the entire distribution system of a residence
Answer:
System Ground

Question:
14. ____ protects individual components connected to an electrical system
Answer:
Equipment Ground

Question:
15. _____ detects low level of leakage current to ground and open the circuit in response
Answer:
GCFI (ground fault circuit interrupters)

Question:
16. Located in bathrooms, kitchens, near pools, fountains, and garages. designed to detects leakages of
current
Answer:
GCFI (ground fault circuit interrupters)

Question:
17. What electrical equipment is this?

,Answer:
Transformer

Question:
18. What electrical equipment is this?




Answer:
Weather Head

Question:
19. The purpose of a _______ is to shut off power
Answer:
Disconnect

Question:
20. Type of current used in buildings
Answer:
AC (Alternating Current)

, Question:
21. What does this picture show?




Answer:
PVC Conduit

Question:
22. ______ is used primarily underground because it holds up to corrosion and decay better
Answer:
PVC Conduit

Question:
23. Once PVC conduit is above ground it transitions into _____
Answer:
RC

Question:
24. What type of conduit is this?




Answer:
RMC (Rigid Metal Conduit)

Question:
25. What type of conduit is this?