NCCER Electrical Latest Update 2024-2025 Actual Exam 150 Questions and 100% Verified Correct Answers Guaranteed A+
.A current transformer has a rating of 4000: 5 if 1000 amps load is on the primary, the
secondary output would produce - CORRECT ANSWER: 1.25 amps
.Compounds made of porcelain and plastic are used as____ - CORRECT 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? - CORRECT 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? - CORRECT ANSWER: 10.5
- If a voltage source of a circuit provides 240 volts and there are 5 ohms of resistance,
how much current is in the circuit? - CORRECT ANSWER: 48amps
A "live-dead live" test is used to: - CORRECT 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 - CORRECT 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: - CORRECT ANSWER: 2 amps
A conductor with 220 mils of insulation would have insulation thickness of: - CORRECT
ANSWER: 0.22"
A conduit piston (mouse) is used for what application? - CORRECT ANSWER: Installing pull line
A conduit piston (mouse) is used for what application? - CORRECT ANSWER: Installing pull line
A dangerously high voltage is produced when someone opens the secondary circuit of a: - CORRECT ANSWER: Current transformer
A drawing showing a point A to point B hookup of conductors is called a: - CORRECT
ANSWER: Wiring diagram
- / 2
A drawing that shows the height of an object, but NOT the depth is a (n): - CORRECT
ANSWER: Elevation drawing
A drill motor breaks down during an installation. What should be done? - CORRECT
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: - CORRECT ANSWER: De-energized and locked tagged out, and tested
A NEMA type___ enclosure is both watertight and corrosion- resistant. - CORRECT
ANSWER: 4X
A NEMA type___ enclosure offers only protection against incidental contact -
CORRECT ANSWER: 1
A reduction in capacitance of a capacitator- start motor results in reduce - CORRECT
ANSWER: speed
A swivel joint connection is to be made in a cable tray installation. What Must be
installed - CORRECT ANSWER: A flexible bonding jumper
A Type "X" conduit body has how many conduit entries - CORRECT 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. - CORRECT 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? - CORRECT ANSWER: Right
Add a capacitator to increase the power factor - CORRECT ANSWER: Add a
capacitator to increase the power factor
All of the following are acceptable grounding electrodes for a service grounding electrode system EXCEPT: - CORRECT 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: - CORRECT
ANSWER: D.E = P X I
All parts of a metal cable tray MUST be bonded together and: - CORRECT ANSWER: Grounded
An assembly containing two or more insulated conductors and having an overall jacket is known as a: - CORRECT ANSWER: Cable
- / 2