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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 1 / 3
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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 2 / 3
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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
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