NCCER Test Exam Questions with 100% Correct Answers

A UL listed rod type ground electrode must have minimum length of Correct Answer 8'' In a circuit of pure capacitance, the current leads the voltage by Correct Answer 90 degrees The standard unit for measuring the cross sectional area of wire is the Correct Answer circular mil The drawing scale is most likely to be found in the Correct Answer drawing title block What is the minimum number of overload sensing units required for all three phase motors Correct Answer 3 What is the resultant distance between center bends for a 10-inch offset at 15 degrees Correct Answer 38.7 inches What is the symbol for the secondary side of a transformer Correct Answer x Most common transformer on an industrial site Correct Answer single phase step down Applications for heat tracing systems with self regulating control include those requiring a narrow operating range and Correct Answer 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 Correct Answer 32'' As the mechanical load increases on a squirrel cage induction motor Correct Answer 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 Correct Answer cross sectional areas Meter used to measure pulling tension Correct Answer dynamometer On a push button, normally closed contacts are generally used to open a circuit to Correct Answer initiate a stop or off circuit function Which of the following is the classified location where combustible dust may be present Correct Answer class i, division i