The electrical NCCER test Questions All
Solved Correctly
_____ conduit is too thin to be threaded. - Correct Answer EMT
??? are intended for the electrical protection of personnel. - Correct Answer GFCIS
208. A heat trace cable is installed on a line that will be insulated, when should it be megged? - Correct Answer
Before and after the insulation is put on
4 inch square boxes are available with all of the following depths EXCEPT - Correct Answer 1 inch
A "megger" will be used to check a cable. The electrician MUST be sure thát the circuit is - Correct Answer De-
energized and locked, tagged out, and tested
A 1 line diagram with simplified symbols indicates the - Correct Answer Interconnections and component parts of an
electrical circuit
A 10-inch offset at 30 degrees is being made. What is the distance between center-to-center bends? - Correct
Answer 20 inches
A 120/208 volt feeder consists of an 800 ft run of 500 kcmil aluminum wire in conduit. This feeder has 5% voltage
drop. What will the phase-to-phase voltage be at the load end? - Correct Answer 197.60 volts
A 3 way switch, is what typeof switch/ - Correct Answer SPDT
A 3-phase, 4-wire, 480v service requires ______ current transformer(s) - Correct Answer 3
A box has two 12/2 with ground cables in it, all like-colored wires have been spliced and "pigtail", how many #12
conductors should be counted in the box fill? - Correct Answer 5
A brass-colored terminal on a receptacle indicates that it should be used to connect what type of wire? - Correct
Answer Hot wire
A cable rated for 5KV insulation can safely carry what MAXIMUM voltage? - Correct Answer 5,000 volts
A conduit bending Hickey can be used to bend conduit from? - Correct Answer 0-15 degrees
A DC ammeter is connected? - Correct Answer In series with the circuit
A device labeled CO/ALR can be used with ______ wire. - Correct Answer Aluminum, copper, or copper-clad
aluminum
A drawing showing a point A to point B hookup of conductors is called a - Correct Answer Wiring diagram
A dropout plate is best described as a. - Correct Answer Plate with a curved surface for cable to follow as it passes
from the tray
A good electrical connection should - Correct Answer Be mechanically and electrically secure
A grounding electrode conductor must be connected _____ of a main distribution panel. - Correct Answer To the
neutral terminal bus
A heat trace cable is installed on a line that will be insulated. When will the cable be "megged"? - Correct Answer
Before and after the insulation is put on the line
A holding contact in a motor starter normally connected in parallel with? - Correct Answer The start push button
, A holding contact na motor starter is normally connected in parallel with the - Correct Answer Start push button
A quick test that can be made to determine if an installation is good is known as a(n) _ test. - Correct Answer Go/No
Go
A section of a cable tray that makes 2 vertical 90 degree turns is known as? - Correct Answer A vertical "T"
A sectional drawing is a? - Correct Answer Cutaway view of a building or object
A switch labeled "AL-CU" can be used with what type of wire? - Correct Answer Aluminum Copper or Copper Clad
Aluminum
A transformer has 200 turns in the primary, 150 turns in the secondary, and 120VAC applied to the primary. The
voltage across the secondary is: - Correct Answer 90Volts
A transformer has a turn ratio of 5:1, what will be the voltage on the secondary if primary voltage is 120v? - Correct
Answer 24 volts
A transformer with 100 turns in its primary coil and 10 turns in its secondary coil is a_ transformer. - Correct Answer
Step-down
A transformer with the primary of 400 turns and a secondary of 300 turns has a _____ - Correct Answer Step-down
turns ratio of 4:3
A Type ?? conduit body has a threaded straight hub on each end and another threaded hub perpendicular to these
two. - Correct Answer T
A voltage of 1 volt applied across a resistance of 1 ohm produces a current of 1 amp. If the voltage is doubled and
the resistance is halved, then the current - Correct Answer Increases 4 times
A voltmeter is connected in. - Correct Answer Parallel with the circuit
A VOM measures - Correct Answer Ohms, amps, and volts
A(n). ______ operates on the same principle as a current transformer. - Correct Answer Clamp-on ammeter
According to Ohm's Law, the amount of current in a circuit is equal to the - Correct Answer Voltage divided by the
resistance
After a hazard review is completed, ________ determine(s) the classification of a confined space as a nonpermit or
permit-required confined space - Correct Answer The supervisor and project/safety managers
All of the following apply to the installation of junction boxes, splices boxes, and pull boxes except that they must be?
- Correct Answer Metal
All of the following are common service voltages in the United States EXCEPT: - Correct Answer 372/575 3-PHASE,
4-WIRE
All of the following are found on an elevation view of a motor control center, EXCEPT - Correct Answer LOCATION
OF MOTOR
All of the following are standard fuse size EXCEPT? - Correct Answer 550 or 601
All of the following are standard fuse sizes EXCEPT - Correct Answer 550 AMP
All of the following connectors may be used for splicing high voltage cable EXCEPT? - Correct Answer Split-bolt
connectors
All of the following information is found on a one-line diagram of a substation EXCEPT? - Correct Answer The Scale
All of the following rating appear on a circuit breaker nameplate, except - Correct Answer Rated wattage
Solved Correctly
_____ conduit is too thin to be threaded. - Correct Answer EMT
??? are intended for the electrical protection of personnel. - Correct Answer GFCIS
208. A heat trace cable is installed on a line that will be insulated, when should it be megged? - Correct Answer
Before and after the insulation is put on
4 inch square boxes are available with all of the following depths EXCEPT - Correct Answer 1 inch
A "megger" will be used to check a cable. The electrician MUST be sure thát the circuit is - Correct Answer De-
energized and locked, tagged out, and tested
A 1 line diagram with simplified symbols indicates the - Correct Answer Interconnections and component parts of an
electrical circuit
A 10-inch offset at 30 degrees is being made. What is the distance between center-to-center bends? - Correct
Answer 20 inches
A 120/208 volt feeder consists of an 800 ft run of 500 kcmil aluminum wire in conduit. This feeder has 5% voltage
drop. What will the phase-to-phase voltage be at the load end? - Correct Answer 197.60 volts
A 3 way switch, is what typeof switch/ - Correct Answer SPDT
A 3-phase, 4-wire, 480v service requires ______ current transformer(s) - Correct Answer 3
A box has two 12/2 with ground cables in it, all like-colored wires have been spliced and "pigtail", how many #12
conductors should be counted in the box fill? - Correct Answer 5
A brass-colored terminal on a receptacle indicates that it should be used to connect what type of wire? - Correct
Answer Hot wire
A cable rated for 5KV insulation can safely carry what MAXIMUM voltage? - Correct Answer 5,000 volts
A conduit bending Hickey can be used to bend conduit from? - Correct Answer 0-15 degrees
A DC ammeter is connected? - Correct Answer In series with the circuit
A device labeled CO/ALR can be used with ______ wire. - Correct Answer Aluminum, copper, or copper-clad
aluminum
A drawing showing a point A to point B hookup of conductors is called a - Correct Answer Wiring diagram
A dropout plate is best described as a. - Correct Answer Plate with a curved surface for cable to follow as it passes
from the tray
A good electrical connection should - Correct Answer Be mechanically and electrically secure
A grounding electrode conductor must be connected _____ of a main distribution panel. - Correct Answer To the
neutral terminal bus
A heat trace cable is installed on a line that will be insulated. When will the cable be "megged"? - Correct Answer
Before and after the insulation is put on the line
A holding contact in a motor starter normally connected in parallel with? - Correct Answer The start push button
, A holding contact na motor starter is normally connected in parallel with the - Correct Answer Start push button
A quick test that can be made to determine if an installation is good is known as a(n) _ test. - Correct Answer Go/No
Go
A section of a cable tray that makes 2 vertical 90 degree turns is known as? - Correct Answer A vertical "T"
A sectional drawing is a? - Correct Answer Cutaway view of a building or object
A switch labeled "AL-CU" can be used with what type of wire? - Correct Answer Aluminum Copper or Copper Clad
Aluminum
A transformer has 200 turns in the primary, 150 turns in the secondary, and 120VAC applied to the primary. The
voltage across the secondary is: - Correct Answer 90Volts
A transformer has a turn ratio of 5:1, what will be the voltage on the secondary if primary voltage is 120v? - Correct
Answer 24 volts
A transformer with 100 turns in its primary coil and 10 turns in its secondary coil is a_ transformer. - Correct Answer
Step-down
A transformer with the primary of 400 turns and a secondary of 300 turns has a _____ - Correct Answer Step-down
turns ratio of 4:3
A Type ?? conduit body has a threaded straight hub on each end and another threaded hub perpendicular to these
two. - Correct Answer T
A voltage of 1 volt applied across a resistance of 1 ohm produces a current of 1 amp. If the voltage is doubled and
the resistance is halved, then the current - Correct Answer Increases 4 times
A voltmeter is connected in. - Correct Answer Parallel with the circuit
A VOM measures - Correct Answer Ohms, amps, and volts
A(n). ______ operates on the same principle as a current transformer. - Correct Answer Clamp-on ammeter
According to Ohm's Law, the amount of current in a circuit is equal to the - Correct Answer Voltage divided by the
resistance
After a hazard review is completed, ________ determine(s) the classification of a confined space as a nonpermit or
permit-required confined space - Correct Answer The supervisor and project/safety managers
All of the following apply to the installation of junction boxes, splices boxes, and pull boxes except that they must be?
- Correct Answer Metal
All of the following are common service voltages in the United States EXCEPT: - Correct Answer 372/575 3-PHASE,
4-WIRE
All of the following are found on an elevation view of a motor control center, EXCEPT - Correct Answer LOCATION
OF MOTOR
All of the following are standard fuse size EXCEPT? - Correct Answer 550 or 601
All of the following are standard fuse sizes EXCEPT - Correct Answer 550 AMP
All of the following connectors may be used for splicing high voltage cable EXCEPT? - Correct Answer Split-bolt
connectors
All of the following information is found on a one-line diagram of a substation EXCEPT? - Correct Answer The Scale
All of the following rating appear on a circuit breaker nameplate, except - Correct Answer Rated wattage
