THE ELECTRICAL NCCER TEST 2023-2024 ACTUAL EXAM 150 QUESTIONS AND CORRECT DETAILED
ANSWERS
Which Article of the NEC covers grounding? - (answer) article 250
Which of the following is a 90 degree, explosion proof fitting? - (answer) GUAL
What is a dropout plate? - (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: - (answer) 372/575 3-
PHASE, 4-WIRE
What does a GFCI breaker do? - (answer) Opens a circuit to prevent operation of an electrical device
What will happen when one or more coils in a winding are grounded? - (answer) The motor will
automatically blow fuses
Eight incandescent lighting fixtures are to be installed. Each fixture is 120- volts, with a 200-watt lamp.
What is the total connected load? - (answer) 13.3 amps
The must be grounded in a bussed gutter if used as the main service equipment. - (answer) Neutral
busbar
When wall mounting cable tray, ensure that - (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 - (answer) To keep moisture
from creeping in
The outer covering on liguid-tight flexible metal conduit is used for - (answer) A moisture seal
A good electrical connection should - (answer) Be mechanically and electrically secure
,THE ELECTRICAL NCCER TEST 2023-2024 ACTUAL EXAM 150 QUESTIONS AND CORRECT DETAILED
ANSWERS
The symbol normally used for duplex - (answer) Circle with two parallel lines drawb through it
Disconnecting means are covered in - (answer) NEC Section 110-22
In relation to switches, the term throw refers to the - (answer) Number of internal operations that a
switch can perform
A 3-phase, 4-wire, 480v service requires ______ current transformer(s) - (answer) 3
Services conductors and equipment are covered in - (answer) NEC Article 230
The NEC required that all receptacles installed on 25 amp and 20 amp branch circuits be ______
receptacles - (answer) Grounding
A transformer with the primary of 400 turns and a secondary of 300 turns has a _____ - (answer) Step-
down turns ratio of 4:3
The circular mil is based on the - (answer) Cross-sectional area of the wire
Of the termination classes listed below, ____ is the only one that provides a seal against external
elements. - (answer) Class 1
Unless otherwise noted. the calculations in AC circuits _____ values. - (answer) Rms
When the coil turns are increased the _____ - (answer) Induced voltage is increased
As the temperature surrounding a self-regulating heating cable rises, the ____ - (answer) Resistance of
the polymeric core increases
, THE ELECTRICAL NCCER TEST 2023-2024 ACTUAL EXAM 150 QUESTIONS AND CORRECT DETAILED
ANSWERS
The motor type that has the highest starting torque is the ____ motor. - (answer) Capacitor-start
For a given number of poles, the ____ determines the speed of an AC motor. - (answer) Frequency
Both induction and synchronous motors operate on the principle of a rotating ____ field - (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: - (answer) 90Volts
The output capacity of a motor is rated in - (answer) Horsepower
The synchronous speed at which a pole, 60 Hz induction motor operates is rpm. - (answer) 1,800
The sine of 0 degree is - (answer) 0
Meters used in AC circuits indicate the - (answer) Effective
The component labeled 7 in figure 1 is a(n) - (answer) End seal
In an AC circuit containing resistance only _____ will flow if the resistance is 10 ohms and the voltage is
120V. - (answer) 12A
The _____ rotor types are generally rugged. - (answer) Squirrel cage
Proofs tests are made at_ of the original factory voltage. - (answer) 60%
Which type of heating cable cannot be cut and terminated in the field? - (answer) Mineral insulated
ANSWERS
Which Article of the NEC covers grounding? - (answer) article 250
Which of the following is a 90 degree, explosion proof fitting? - (answer) GUAL
What is a dropout plate? - (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: - (answer) 372/575 3-
PHASE, 4-WIRE
What does a GFCI breaker do? - (answer) Opens a circuit to prevent operation of an electrical device
What will happen when one or more coils in a winding are grounded? - (answer) The motor will
automatically blow fuses
Eight incandescent lighting fixtures are to be installed. Each fixture is 120- volts, with a 200-watt lamp.
What is the total connected load? - (answer) 13.3 amps
The must be grounded in a bussed gutter if used as the main service equipment. - (answer) Neutral
busbar
When wall mounting cable tray, ensure that - (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 - (answer) To keep moisture
from creeping in
The outer covering on liguid-tight flexible metal conduit is used for - (answer) A moisture seal
A good electrical connection should - (answer) Be mechanically and electrically secure
,THE ELECTRICAL NCCER TEST 2023-2024 ACTUAL EXAM 150 QUESTIONS AND CORRECT DETAILED
ANSWERS
The symbol normally used for duplex - (answer) Circle with two parallel lines drawb through it
Disconnecting means are covered in - (answer) NEC Section 110-22
In relation to switches, the term throw refers to the - (answer) Number of internal operations that a
switch can perform
A 3-phase, 4-wire, 480v service requires ______ current transformer(s) - (answer) 3
Services conductors and equipment are covered in - (answer) NEC Article 230
The NEC required that all receptacles installed on 25 amp and 20 amp branch circuits be ______
receptacles - (answer) Grounding
A transformer with the primary of 400 turns and a secondary of 300 turns has a _____ - (answer) Step-
down turns ratio of 4:3
The circular mil is based on the - (answer) Cross-sectional area of the wire
Of the termination classes listed below, ____ is the only one that provides a seal against external
elements. - (answer) Class 1
Unless otherwise noted. the calculations in AC circuits _____ values. - (answer) Rms
When the coil turns are increased the _____ - (answer) Induced voltage is increased
As the temperature surrounding a self-regulating heating cable rises, the ____ - (answer) Resistance of
the polymeric core increases
, THE ELECTRICAL NCCER TEST 2023-2024 ACTUAL EXAM 150 QUESTIONS AND CORRECT DETAILED
ANSWERS
The motor type that has the highest starting torque is the ____ motor. - (answer) Capacitor-start
For a given number of poles, the ____ determines the speed of an AC motor. - (answer) Frequency
Both induction and synchronous motors operate on the principle of a rotating ____ field - (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: - (answer) 90Volts
The output capacity of a motor is rated in - (answer) Horsepower
The synchronous speed at which a pole, 60 Hz induction motor operates is rpm. - (answer) 1,800
The sine of 0 degree is - (answer) 0
Meters used in AC circuits indicate the - (answer) Effective
The component labeled 7 in figure 1 is a(n) - (answer) End seal
In an AC circuit containing resistance only _____ will flow if the resistance is 10 ohms and the voltage is
120V. - (answer) 12A
The _____ rotor types are generally rugged. - (answer) Squirrel cage
Proofs tests are made at_ of the original factory voltage. - (answer) 60%
Which type of heating cable cannot be cut and terminated in the field? - (answer) Mineral insulated
