Low Voltage Practice Test 1 Questions And Answers With Complete Solutions

Low Voltage Practice Test 1 fx fx fx fx




1. 1. All exposed non-current carrying metal parts of an information technolo-
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gy system
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a. shall be bonded to the equipment grounding conductor
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b. shall be left alone for IT to fix it
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c. shall comply with article 250 fx fx fx fx




d. both a and c: d. both a and cfx fx fx fx fx fx fx fx




645.15
2. Cables used to connect loudspeakers to each other or to an amplifier
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a. shall comply with Article 440 fx fx fx fx




b. shall comply with Article 820 fx fx fx fx




c. shall comply with Article 625 fx fx fx fx




d. shall comply with Article 722: d. shall comply with Article 722.
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640.21 (B) fx




3. Outdoor antennas and lead- fx fx fx




in conductors from an antenna to a building shall
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a. not cross over open conductors of electric light or power circuits
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b. be such as to provide a clearance of at least 600 mm (2 ft)
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c. be kept well away from all such circuits so as to avoid the possibility of
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accidental contact fx




d. any of the these: d. any of the these
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810.13
4. NPLFA circuit overcurrent protection fx fx fx




a. shall not exceed 7 amperes for 18 AWG conductors
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b. shall not exceed 10 amperes for 16 AWG conductors
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c. shall not exceed 15 amperes for 14 AWG conductor
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d. a and b: d. a and b
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760.43
5. Different intrinsically safe circuit conductors shall be separated from eac
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h other by one of the following means:
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a. with insulation that is 0.01 in.
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b. a minimum of .25mm
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c. with a metal partition of .0359in thick
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d. in ducts separated by at least 4 in: a. with insulation that is 0.01 in.
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504.30(B)(2)
6. Abandoned Supply Circuits and Interconnecting Cables fx fx fx fx fx




a. left for IT techsfx fx fx




b. must be marked for future usefx fx fx fx fx




c. accessible cables shall be removed unless contained in a raceway fx fx fx fx fx fx fx fx fx




d. all of the these: c. accessible cables shall be removed unless contained in a raceway
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645.5(G)
7. Branch circuits for lighting systems in Article 311 shall be supplied from a
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maximum
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a. 20-ampere branch circuit fx fx




b. 10-ampere branch circuit fx fx




c. 25-ampere branch circuit fx fx




d. 15-ampere branch circuit: a. 20-ampere branch circuit fx fx fx fx fx fx




411.8
8. Class 1 circuits shall be identified at terminal and junction locations
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a. in a manner that prevents unintentional interference with other circuits
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during testing and servicing
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b. shall be installed in a neat and workmanlike manner
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c. in a manner that's accessible to the public for transparency
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d. both a and b: d. both a and b fx fx fx fx fx fx fx fx




724.24, 724.30 fx




9. Class 2 and Class 3 Power- fx fx fx fx fx




Limited Circuits are in what article of the 2023 NEC? fx fx fx fx fx fx fx fx fx




a. 720
b. 727
c. 724
d. 725: d. 725 fx fx




725
10. Class 1 Power-Limited Circuits and Class 1 Power-Limited Remote- fx fx fx fx fx fx fx fx




Control and Signaling Circuits are in what article of the 2023 NEC?
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a. 720
b. 727
c. 724
d. 725: c. 724 fx fx




724
11. As appropriate for the services provided, the output circuits derived f fx fx fx fx fx fx fx fx fx fx




rom a network- fx fx




powered broadband communications system's network interface unit (NIU) o fx fx fx fx fx fx fx fx




r from a premises- fx fx fx




powered broadband communications system's network terminal shall compl fx fx fx fx fx fx fx




y with the requirements of the following:
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a. Installations of Class 2 and Class 3 circuits — fx fx fx fx fx fx fx fx




Part II of Article 725 and Parts I and II of Article 722
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b. Installations of power-limited fire alarm circuits — Part III of Article 760 fx fx fx fx fx fx fx fx fx fx fx




c. Installations of optical fiber cables — Part V of Article 770 fx fx fx fx fx fx fx fx fx fx




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