NCCER Electrical Test Questions with Correct Answers Guaranteed 100% Pass

NCCER Electrical Exam Update Questions with Correct Answers 100% Pass Graded A+ .A current transformer has a rating of 4000: 5 if 1000 amps load is on the primary, the secondary output would produce - Answer 1.25 amps .Compounds made of porcelain and plastic are used as____ - Answer insulators .What will be the center -to-center measurement for two 30 degree bends in an offset bend with a height of 18 inches? - Answer 36 inches* 4.What is the voltage drop for a #8 (16.510 cmil) copper wire at 120v. 215 feet one way and a load of 39amps? - Answer 10.5 5. If a voltage source of a circuit provides 240 volts and there are 5 ohms of resistance, how much current is in the circuit? - Answer 48amps A "live -dead live" test is used to: - Answer Verify a circuit is de -energized A 10 inch offset at 30 degrees is being made what is the distance between center to center bends - Answer 20 inches A circuit with a source of 120 volts is connected across four parallel 60 ohms resistors. The current through each resistor is: - Answer 2 amps A conductor with 220 mils of insulation would have insulation thickness of: - Answer 0.22" A conduit piston (mouse) is used for what application? - Answer Installing pull line A conduit piston (mouse) is used for what application? - Answer Installing pull line A dangerously high voltage is produced when someone opens the secondary circuit of a: - Answer Current transformer A drawing showing a point A to point B hookup of conductors is called a: - Answer Wiring diagram A drawing that shows the height of an object, but NOT the depth is a (n): - Answer Elevation drawing A drill motor breaks down during an installation. What should be done? - Answer Tag the drill and give it to the supervisor A megger will be used to check an in -service cable. The Electrician MUST be sure that the circuit is: - Answer De-energized and locked tagged out, and tested A NEMA type___ enclosure is both watertight and corrosion - resistant. - Answer 4X A NEMA type___ enclosure offers only protection against incidental contact - Answer 1 A reduction in capacitance of a capacitator - start motor results in reduce - Answer speed A swivel joint connection is to be made in a cable tray installation. What Must be installed - Answer A flexible bonding jumper A Type "X" conduit body has how many conduit entries - Answer 4 according to NEC Article 240.4(D) (5),12 AWG copper shall be protected against overcurrent by a device with a MAXIMUM ampacity of. - Answer 20 amps According to the NEC, where is the "C" phase system to be located ( viewing from the front) with respect to the A and switchboard? - Answer Right Add a capacitator to increase the power factor - Answer Add a capacitator to increase the power factor All of the following are acceptable grounding electrodes for a service grounding electrode system EXCEPT: - Answer ½ -inch rebar 20 feet long encased in concrete in the bottom of a footing All of the following are CORRECT formulas for Ohm's Law EXCEPT: - Answer D.E = P X I All parts of a metal cable tray MUST be bonded together and: - Answer Grounded An assembly containing two or more insulated conductors and having an overall jacket is known as a: - Answer Cable An auxiliary holding contact ( seal - in) on a typically NEMA starter is indicated by the terminal marking: - Answer A1 & A2 An electrical room involving combustible dust would have explosive mixtures develop if the dust collection system failed. What would be the hazardous classification for this room? - Answer Class 2, Div 1 An electrician reporting to the work area notices that the temporary wiring has been damaged. What should the electrician do? - Answer immediately report it to the supervisors An insulated type 600 volt crimp terminal for a 12 -10 AWG is typically identified by which color code? - Answer Yellow Before using a multimeter to check voltage on a breaker you should: - Answer check the meter with a known power source Cable markings show all of the following EXCEPT - Answer Ampacity Damaged tools or extension cord should be____. - Answer Removed immediately from use a tagged " Do Not Use"