NCCER Test Practice Exam Questions with 100% Correct Answers

Ropebanding Correct Answer In a guardrail system, the guardrails can be made of any of the following EXCEPT: a) pipe b) chain c) ropebanding d) cable 9..6 ohms Correct Answer If the potential across the circuit is 48 volts and the current is 5 amps the resistance of the circuit is: a) 4.8 ohms b) 9.6 ohms c) 48.0 ohms d) 96.0 ohms 8' Correct Answer A UL listed rod type grounding electrode must have a MINIMUM length of: a) 6' b) 8' c) 10' d) 20' 3 Correct Answer What is the MINIMUM number of overload sensing units required for all three phase motors? a) 0 b) 1 c) 2 d) 3 90-degrees Correct Answer In a circuit of pure capacitance, the current leads the voltage by an angle of: a) 30-degrees b) 45-degrees c) 90-degrees d) 180-degrees Circular mil Correct Answer The standard unit for measuring the cross-sectional area of wire is the: a) circular mil b) square mil c) round mil d) radial mil