MEP SYSTEMS I (COSC 325) ELECTRICAL
EXAM – HOUSTON NEWEST 2024-2025
ACTUAL EXAM COMPLETE 150
QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS)
|ALREADY GRADED A+
When using a ____ _____ fuse, the melting of the conductor
strip is almost instantaneous. (20-438) - CORRECT ANSWER-
Standard Plug
A ____ ________ fuse can be reset after an overload and reused.
(20-440) - CORRECT ANSWER-Circuit Breaker
What is an overcurrent protection device with a mechanical
mechanism that may automatically or manually open a circuit
when an overload condition or short circuit occurs?
Unlike most fuses, they can be reset. (20-440) - CORRECT
ANSWER-Circuit Breaker
What is the most popular overcurrent device? (20-440) -
CORRECT ANSWER-Circuit Breaker
,2|Page
What are the three types of circuit breakers? (20-440) -
CORRECT ANSWER-Thermal
Magnetic
Thermal-Magnetic
What type of circuit breaker has the fastest response time to
serious overloads? (20-441) - CORRECT ANSWER-Thermal-
Magnetic
What is the typical rating for residential circuit breakers? (20-
441) - CORRECT ANSWER-115 V for single pole
230 V for double pole
What is a fast-acting receptacle that detects low levels of leaking
current to ground and opens the circuit in response to the
leakage? (20-441) - CORRECT ANSWER-Ground Fault Circuit
Interrupter (GFCI)
True or False? GFCIs protect against line-to-line contact. (20-
441) - CORRECT ANSWER-False
What is the smallest current leakage a GFCI can detect? (20-
441) - CORRECT ANSWER-.005 A
, 3|Page
The GFCI can be tested on a ______ basis without a ground
fault condition. (20-442) - CORRECT ANSWER-Monthly
The National Electric Code (NEC) requires GFCIs for protection
in what areas? (20-442) - CORRECT ANSWER-- Residential
- Outdoor Receptacles
- Bathrooms
- Residential Garages
- Unfinished Basements & Crawlspaces
- Kitchens
- Construction Sites
- Mobile Homes
- Swimming Pools & Fountains
- Lightning Fixtures and Lightning Outlets near Pools
True or False? All power tools are grounded except power tools
that are approved double-insulated. (20-443) - CORRECT
ANSWER-True
Non-double insulated power tools must have a ____-conductor
cord. (20-443) - CORRECT ANSWER-Three
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller johnkabiru. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $28.49. You're not tied to anything after your purchase.
