Electrician NCCER Exam Questions & Answers Latest Update
Electrician NCCER Exam Questions & Answers
Latest Update
Terms in this set (354)
Which article of the NEC covers Article 250
grounding?
What is a dropout plate? Metal plate with a curve surface for cable to follow as it passes from the tray
All of the following are common service 372/575 3-Phase, 4-wire
voltages in the United States Except:
What does a GFCI breaker do? Opens a circuit to prevent operation of an electrical device
What will happen when one or more coils The motor will automatically blow fuses
in a winding are grounded?
eight incandescent lighting fixtures are to 13.3 Amps
be installed. Each fixture is 120 volts, with
a 200-whatt lamp what is the total
connected load?
The ______ must be grounded in a bussed Neutral busbar
glutter if use as the main service
equipmemt
When wall mounting cable tray, ensure The building structure is strong enough to support the tray system
that
The purpose of sealing cable ends when to keep moisture from creeping in
reels of cable are in storage is ______________
The outer covering on liquid-tight flexible A moisture seal
metal conduit is use for
A good electrical connection should Be mechanically and electrically secure
The symbol normally use for duplex Circle with two parallel lines draw through it
Disconnecting means are covered in NEC section 110-22
®™ 1
,Electrician NCCER Exam Questions & Answers Latest Update
In relation to switches, the term throw Number of internal operations that switch can perform
refers to the
A 3-phase, 4-wire, 480v service requires 3
_ ___ current transformers
Services conductors and equipment are NEC Article 230
covered in
The NEC required that all receptacles Grounding
installed on 25 amp and 20 amp branch
circuits be _____receptacles
The circular mil is based on the Cross-sectional area of the wire
A transformer with the primary of 400 Step down turns ratio of 4:3
turns and a secondary of 300 turns has a
Of the termination classes listed Class 1
below, __ is the only one that provides a
seal against external elements
Unless otherwise noted, the calculations Rms
in AC circuits ___ values
When the coil turns increased the ________ Induced voltage is increased
As the temperature surrounding a self Resistance of the polymeric core increases
regulating heating cable rises, the ________
The motor type that has the highest Capacitor - start
starting torque is the____ motor
For a given number of poles, the________ Frequency
determines the speed of an AC Motor.
Both induction and synchronous motor Magnetic
operate on the principle of the
rotating ____ field
A Transformer has 200 turns in the 90 Volts
primary, 150 turns in the secondary, and
120VAC applied to the primary. The
voltage across the secondary is
The output capacity of a motor is rated in Horsepower
The synchronous speed at witcha 4 pole, 1800
60 Hz induction motor operates is ________
rpm
The sine of 0 degree is 0
In a AC circuit containing resistance only, 12A
_ ___12A will flow if the resistance is 10
ohms and the voltage is 120V
The ___ rotor types are generally rugged Squirrel cage
The componente labeled 7 in figure 1 is a End seal
(an)
®™ 2
, Electrician NCCER Exam Questions & Answers Latest Update
Meters used in AC circuits indicate Effective
the_______
Proofs tests are made at _____ oF the 60%
original factory voltage
Which type of heating cable can not be Mineral insulated
cut and terminated in the field?
The secondary of a CT under load should Induced hight voltage
not be opened because of______
In a transformer,______ Electromagnetic induction occurs
When a ground rod is installed, the top of Flush with or below
the rod must be positioned _.grade
When making offset bends, the two kicks Crooked bend
must be made perfectly parallel or the
resulting offset will have a ________
All of the following types of condulet may C
be used as a pulling point for conduit that
requires a 90 degree change in direction,
except_______
To be effective, a grounding system must Undervoltage conditions
limit the voltage on the electrical system
and protect it from all of the following,
except ______
What is the most common service use in a 120/240 volt, 1-phase, 3-wire
temporary power panel?
What are the 2 most common types of Circuit breakers and fuses
overcurrent protective devices?
What instrument is use to perform an Megohmmeter
insulation resistance test on a 480 volt
motor winding?
What is a seal installed in a run of conduit Prevent the passage of explosive gases in the conduit
in a class I location?
Which of the following is the correct I=E/R
formula for OHM's law?
Which of the following testing instruments Clamp-on ammeter
operated on the current transformer
principle
A drowning showing a point A to point B Wiring diagram
hookup of conductors is called a
What does HOA usually mean in a motor Hands of automatic
control circuit
A120/208 Volt feeder consist of an 800 ft 197.60 volts
run of 500 kcmil aluminum wire in conduit.
This feeder has 5% voltage drop. What will
the phase-toPhase voltage be at the load
end
®™ 3
Electrician NCCER Exam Questions & Answers
Latest Update
Terms in this set (354)
Which article of the NEC covers Article 250
grounding?
What is a dropout plate? Metal plate with a curve surface for cable to follow as it passes from the tray
All of the following are common service 372/575 3-Phase, 4-wire
voltages in the United States Except:
What does a GFCI breaker do? Opens a circuit to prevent operation of an electrical device
What will happen when one or more coils The motor will automatically blow fuses
in a winding are grounded?
eight incandescent lighting fixtures are to 13.3 Amps
be installed. Each fixture is 120 volts, with
a 200-whatt lamp what is the total
connected load?
The ______ must be grounded in a bussed Neutral busbar
glutter if use as the main service
equipmemt
When wall mounting cable tray, ensure The building structure is strong enough to support the tray system
that
The purpose of sealing cable ends when to keep moisture from creeping in
reels of cable are in storage is ______________
The outer covering on liquid-tight flexible A moisture seal
metal conduit is use for
A good electrical connection should Be mechanically and electrically secure
The symbol normally use for duplex Circle with two parallel lines draw through it
Disconnecting means are covered in NEC section 110-22
®™ 1
,Electrician NCCER Exam Questions & Answers Latest Update
In relation to switches, the term throw Number of internal operations that switch can perform
refers to the
A 3-phase, 4-wire, 480v service requires 3
_ ___ current transformers
Services conductors and equipment are NEC Article 230
covered in
The NEC required that all receptacles Grounding
installed on 25 amp and 20 amp branch
circuits be _____receptacles
The circular mil is based on the Cross-sectional area of the wire
A transformer with the primary of 400 Step down turns ratio of 4:3
turns and a secondary of 300 turns has a
Of the termination classes listed Class 1
below, __ is the only one that provides a
seal against external elements
Unless otherwise noted, the calculations Rms
in AC circuits ___ values
When the coil turns increased the ________ Induced voltage is increased
As the temperature surrounding a self Resistance of the polymeric core increases
regulating heating cable rises, the ________
The motor type that has the highest Capacitor - start
starting torque is the____ motor
For a given number of poles, the________ Frequency
determines the speed of an AC Motor.
Both induction and synchronous motor Magnetic
operate on the principle of the
rotating ____ field
A Transformer has 200 turns in the 90 Volts
primary, 150 turns in the secondary, and
120VAC applied to the primary. The
voltage across the secondary is
The output capacity of a motor is rated in Horsepower
The synchronous speed at witcha 4 pole, 1800
60 Hz induction motor operates is ________
rpm
The sine of 0 degree is 0
In a AC circuit containing resistance only, 12A
_ ___12A will flow if the resistance is 10
ohms and the voltage is 120V
The ___ rotor types are generally rugged Squirrel cage
The componente labeled 7 in figure 1 is a End seal
(an)
®™ 2
, Electrician NCCER Exam Questions & Answers Latest Update
Meters used in AC circuits indicate Effective
the_______
Proofs tests are made at _____ oF the 60%
original factory voltage
Which type of heating cable can not be Mineral insulated
cut and terminated in the field?
The secondary of a CT under load should Induced hight voltage
not be opened because of______
In a transformer,______ Electromagnetic induction occurs
When a ground rod is installed, the top of Flush with or below
the rod must be positioned _.grade
When making offset bends, the two kicks Crooked bend
must be made perfectly parallel or the
resulting offset will have a ________
All of the following types of condulet may C
be used as a pulling point for conduit that
requires a 90 degree change in direction,
except_______
To be effective, a grounding system must Undervoltage conditions
limit the voltage on the electrical system
and protect it from all of the following,
except ______
What is the most common service use in a 120/240 volt, 1-phase, 3-wire
temporary power panel?
What are the 2 most common types of Circuit breakers and fuses
overcurrent protective devices?
What instrument is use to perform an Megohmmeter
insulation resistance test on a 480 volt
motor winding?
What is a seal installed in a run of conduit Prevent the passage of explosive gases in the conduit
in a class I location?
Which of the following is the correct I=E/R
formula for OHM's law?
Which of the following testing instruments Clamp-on ammeter
operated on the current transformer
principle
A drowning showing a point A to point B Wiring diagram
hookup of conductors is called a
What does HOA usually mean in a motor Hands of automatic
control circuit
A120/208 Volt feeder consist of an 800 ft 197.60 volts
run of 500 kcmil aluminum wire in conduit.
This feeder has 5% voltage drop. What will
the phase-toPhase voltage be at the load
end
®™ 3
