NCCER Electrical Exam Questions and Answers, Exams of Electrical Engineering

A series of questions and answers related to electrical engineering, specifically focusing on topics relevant to the nccer (national center for construction education and research) certification. It covers a range of subjects including grounding, circuit characteristics, wire sizing, transformer configurations, and safety practices. The questions are designed to test knowledge of electrical codes, standards, and practical applications in industrial and construction settings. This material is useful for students and professionals preparing for electrical certifications or seeking to enhance their understanding of electrical systems. It provides a concise review of key concepts and terminology used in the electrical field, making it a valuable resource for exam preparation and on-the-job reference.

Typology: Exams

2024/2025

Available from 07/28/2025

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NCCER Test Questions & Answers |
| | Latest
Version
A UL listed rod type ground electrode must have minimum length of - ✔✔8''
in a circuit of pure capacitance, the current leads the voltage by - ✔✔90 degrees
The standard unit for measuring the cross sectional area of wire is the - ✔✔circular mil
the drawing scale is most likely to be found in the - ✔✔drawing title block
what is the minimum number of overload sensing units required for all three phase motors - ✔✔3
what is the resultant distance between center bends for a 10-inch offset at 15 degrees - ✔✔38.7 inches
What is the symbol for the secondary side of a transformer - ✔✔x
Most common transformer on an industrial site - ✔✔single phase step down
applications for heat tracing systems with self regulating control include those requiring a narrow
operating range and - ✔✔temperature sensitive fluids
with a row of 3-4'', 3-2'' and 1-1'' conduits on each side for a straight pullbox what is the minimum
distance between the opposite side walls of the box - ✔✔32''
As the mechanical load increases on a squirrel cage induction motor - ✔✔torque decreases and stator
current increases
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NCCER Test Questions & Answers |

| | Latest Version

A UL listed rod type ground electrode must have minimum length of - ✔✔8'' in a circuit of pure capacitance, the current leads the voltage by - ✔✔90 degrees The standard unit for measuring the cross sectional area of wire is the - ✔✔circular mil the drawing scale is most likely to be found in the - ✔✔drawing title block what is the minimum number of overload sensing units required for all three phase motors - ✔✔ 3 what is the resultant distance between center bends for a 10-inch offset at 15 degrees - ✔✔38.7 inches What is the symbol for the secondary side of a transformer - ✔✔x Most common transformer on an industrial site - ✔✔single phase step down applications for heat tracing systems with self regulating control include those requiring a narrow operating range and - ✔✔temperature sensitive fluids with a row of 3-4'', 3-2'' and 1-1'' conduits on each side for a straight pullbox what is the minimum distance between the opposite side walls of the box - ✔✔32'' As the mechanical load increases on a squirrel cage induction motor - ✔✔torque decreases and stator current increases

when installing cables smaller the 4/0 in cable tray, the allowable cable fill area must not be less than the sum of the cable - ✔✔cross sectional areas Meter used to measure pulling tension - ✔✔dynamometer on a push button, normally closed contacts are generally used to open a circuit to - ✔✔initiate a stop or off circuit function which of the following is the classified location where combustible dust may be present - ✔✔class i, division i which of the following is the classified location where combustible fibers are always present - ✔✔Class 3, division? Minimum space between 2 ground rods - ✔✔6ft how does a battery produce voltage - ✔✔electromagnetisim as the load decreases on a squirrel cage induction motor, its power factor - ✔✔increases what size wire is needed for a 120v circuit 215 feet long one way with a load of 39amps - ✔✔# which of the following conductors has the least resistance - ✔✔1/ what is the primary consideration for selecting a rope for a cable pull - ✔✔low stretch what is the minimum distance between raceway entries allowed in a pull box for angle pulls - ✔✔6x's the largest trade size raceway

Eight incandescent lighting fixtures are to be installed, each fixture is 120 volts, with a 200-watt lamp. What is the total connected load? - ✔✔13.3 amps A lighting outlet symbol in the shape of a circle indicates a - ✔✔incandescent fixture material between the capacitor plates in which an electric field appears is the - ✔✔dielectric conductor with highest temperature rating - ✔✔THHW