Exam 1: Plans and Sitework
Exam 1: Plans and Sitework20 Questions
Exam 2: The Unit Substation20 Questions
Exam 3: Feeder Bus System20 Questions
Exam 4: Panelboards20 Questions
Exam 5: Trolley Busways20 Questions
Exam 6: Using Wire Tables and Determining Conductor Sizes20 Questions
Exam 7: Signaling Systems20 Questions
Exam 8: Basic Motor Controls20 Questions
Exam 9: Motors and Controllers20 Questions
Exam 10: Motor Installation20 Questions
Exam 11: Power Factor19 Questions
Exam 12: Ventilating, Air Conditioning, and Other Facilities20 Questions
Exam 13: System Protection20 Questions
Exam 14: Lightning Protection20 Questions
Exam 15: Luminaires20 Questions
Exam 16: Site Lighting20 Questions
Exam 17: Programmable Logic Controllers20 Questions
Exam 18: Developing a Program for a Plc19 Questions
Exam 19: Fiber Optics20 Questions
Exam 20: Hazardous Locations20 Questions
Exam 21: Harmonics20 Questions
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Discuss the role of the building location on the site plan.
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(Essay)
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Correct Answer:
The building location is given on the site plan by referring to existing points such as the centerline of a street. If the electrical contractor and the crew arrive on the site before the general contractor arrives, they are not required to "stake out" (locate) the building. However, they should be able to determine its approximate location. A site plan shows the property lines and the centerlines of the street from which the electrician can locate the building and other site improvements.
Outlet boxes and device boxes use their nominal measurement as their _________size.
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(Multiple Choice)
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Correct Answer:
D
If the electrical system to be installed operates at a potential higher than _________volts, the nonmetallic conduit must be encased in not less than 2 in. (50mm) of concrete.
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(Multiple Choice)
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Correct Answer:
D
The standard format symbol for a(n)_________ consists of two unshaded concentric circles.
(Multiple Choice)
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The United States is the last major country in the world not using the_________ system as the primary system of measurement.
(Multiple Choice)
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The metric system is a "base10" or " _________" system in that values can be easily multiplied or divided by 10 or powers of 10.
(Multiple Choice)
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A_________ is where a product has been designed to SI metric dimensions.
(Multiple Choice)
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_________are given on the site plan to indicate the existing and the new grading levels.
(Multiple Choice)
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In the SI system, what is the prefix corresponding to ten times the base unit?
(Multiple Choice)
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What is the difference between the US and SI systems for writing numbers with many digits?
(Essay)
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The drainage hole at the base of a telephone pole is known as a _________hole.
(Multiple Choice)
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Telephone service is provided by conduit that runs from the telephone pole. The conduit runs underground at a minimum depth of _________inches.
(Multiple Choice)
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When can rigid metal conduit be installed directly in the soil for underground raceways?
(Essay)
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The_________ , as given on the site plan, is the reference point from which all elevations are located.
(Multiple Choice)
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A(n)_________ indicates the level of the lower edge of the inside of a conduit entering a manhole.
(Multiple Choice)
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Although _________are more expensive to install, they provide many advantages that direct burial installations do not.
(Multiple Choice)
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