The electrical NCCER test Exam 2026
Questions and Answers
Which Article of the NEC covers grounding? - Correct answer-article 250
Which of the following is a 90 degree, explosion proof fitting? - Correct answer-
GUAL
What is a dropout plate? - Correct answer-Metal plate with a curved surface for
cable to follow as it passes from the tray
All of the following are common service voltages in the United States EXCEPT: -
Correct answer-372/575 3-PHASE, 4-WIRE
What does a GFCI breaker do? - Correct answer-Opens a circuit to prevent
operation of an electrical device
What will happen when one or more coils in a winding are grounded? - Correct
answer-The motor will automatically blow fuses
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,Eight incandescent lighting fixtures are to be installed. Each fixture is 120- volts,
with a 200-watt lamp. What is the total connected load? - Correct answer-13.3
amps
The must be grounded in a bussed gutter if used as the main service equipment. -
Correct answer-Neutral busbar
When wall mounting cable tray, ensure that - Correct answer-The building
structure is strong enough to support the tray system
The purpose of sealing cable ends when reels of cable are in storage is - Correct
answer-To keep moisture from creeping in
The outer covering on liguid-tight flexible metal conduit is used for - Correct
answer-A moisture seal
A good electrical connection should - Correct answer-Be mechanically and
electrically secure
The symbol normally used for duplex - Correct answer-Circle with two parallel
lines drawb through it
Disconnecting means are covered in - Correct answer-NEC Section 110-22
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,In relation to switches, the term throw refers to the - Correct answer-Number of
internal operations that a switch can perform
A 3-phase, 4-wire, 480v service requires ______ current transformer(s) - Correct
answer-3
Services conductors and equipment are covered in - Correct answer-NEC Article
230
The NEC required that all receptacles installed on 25 amp and 20 amp branch
circuits be ______ receptacles - Correct answer-Grounding
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
The circular mil is based on the - Correct answer-Cross-sectional area of the wire
Of the termination classes listed below, ____ is the only one that provides a seal
against external elements. - Correct answer-Class 1
Unless otherwise noted. the calculations in AC circuits _____ values. - Correct
answer-Rms
When the coil turns are increased the _____ - Correct answer-Induced voltage is
increased
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, As the temperature surrounding a self-regulating heating cable rises, the ____ -
Correct answer-Resistance of the polymeric core increases
The motor type that has the highest starting torque is the ____ motor. - Correct
answer-Capacitor-start
For a given number of poles, the ____ determines the speed of an AC motor. -
Correct answer-Frequency
Both induction and synchronous motors operate on the principle of a rotating ____
field - Correct answer-Magnetic
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
The output capacity of a motor is rated in - Correct answer-Horsepower
The synchronous speed at which a pole, 60 Hz induction motor operates is rpm. -
Correct answer-1,800
The sine of 0 degree is - Correct answer-0
Meters used in AC circuits indicate the - Correct answer-Effective
The component labeled 7 in figure 1 is a(n) - Correct answer-End seal
©COPYRIGHT 2025, ALL RIGHTS RESERVED 4
Questions and Answers
Which Article of the NEC covers grounding? - Correct answer-article 250
Which of the following is a 90 degree, explosion proof fitting? - Correct answer-
GUAL
What is a dropout plate? - Correct answer-Metal plate with a curved surface for
cable to follow as it passes from the tray
All of the following are common service voltages in the United States EXCEPT: -
Correct answer-372/575 3-PHASE, 4-WIRE
What does a GFCI breaker do? - Correct answer-Opens a circuit to prevent
operation of an electrical device
What will happen when one or more coils in a winding are grounded? - Correct
answer-The motor will automatically blow fuses
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
,Eight incandescent lighting fixtures are to be installed. Each fixture is 120- volts,
with a 200-watt lamp. What is the total connected load? - Correct answer-13.3
amps
The must be grounded in a bussed gutter if used as the main service equipment. -
Correct answer-Neutral busbar
When wall mounting cable tray, ensure that - Correct answer-The building
structure is strong enough to support the tray system
The purpose of sealing cable ends when reels of cable are in storage is - Correct
answer-To keep moisture from creeping in
The outer covering on liguid-tight flexible metal conduit is used for - Correct
answer-A moisture seal
A good electrical connection should - Correct answer-Be mechanically and
electrically secure
The symbol normally used for duplex - Correct answer-Circle with two parallel
lines drawb through it
Disconnecting means are covered in - Correct answer-NEC Section 110-22
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
,In relation to switches, the term throw refers to the - Correct answer-Number of
internal operations that a switch can perform
A 3-phase, 4-wire, 480v service requires ______ current transformer(s) - Correct
answer-3
Services conductors and equipment are covered in - Correct answer-NEC Article
230
The NEC required that all receptacles installed on 25 amp and 20 amp branch
circuits be ______ receptacles - Correct answer-Grounding
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
The circular mil is based on the - Correct answer-Cross-sectional area of the wire
Of the termination classes listed below, ____ is the only one that provides a seal
against external elements. - Correct answer-Class 1
Unless otherwise noted. the calculations in AC circuits _____ values. - Correct
answer-Rms
When the coil turns are increased the _____ - Correct answer-Induced voltage is
increased
©COPYRIGHT 2025, ALL RIGHTS RESERVED 3
, As the temperature surrounding a self-regulating heating cable rises, the ____ -
Correct answer-Resistance of the polymeric core increases
The motor type that has the highest starting torque is the ____ motor. - Correct
answer-Capacitor-start
For a given number of poles, the ____ determines the speed of an AC motor. -
Correct answer-Frequency
Both induction and synchronous motors operate on the principle of a rotating ____
field - Correct answer-Magnetic
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
The output capacity of a motor is rated in - Correct answer-Horsepower
The synchronous speed at which a pole, 60 Hz induction motor operates is rpm. -
Correct answer-1,800
The sine of 0 degree is - Correct answer-0
Meters used in AC circuits indicate the - Correct answer-Effective
The component labeled 7 in figure 1 is a(n) - Correct answer-End seal
©COPYRIGHT 2025, ALL RIGHTS RESERVED 4
