1|Page

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

No comments found.

jordancarter 6 months ago

This study guide is clear, well-organized, and covers all the essential topics. The explanations are concise, making complex concepts easier to understand. It could benefit from more practice questions, but overall, it's a great resource for efficient studying. Highly recommend!

A. You will receive a PDF that is available for instant download upon purchase. The document will be accessible to you at any time, from anywhere, and will remain available indefinitely through your profile.

A. 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.

A. you are buying this document from us learnexams

A. No, you only buy these notes for $ indicated . You are not obligated to anything after your purchase.

A. check our reviews at trustpilot

Add To Cart

Buy Now