Electrician Nccer / Nccer Electrical
Certification Test Latest Update
Which article of the NEC covers grounding? - CORRECT ANSWER-Article 250
What is a dropout plate? - CORRECT ANSWER-Metal plate with a curve 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
eight incandescent lighting fixtures are to be installed. Each fixture is 120 volts,
with a 200-whatt lamp what is the total connected load? - CORRECT ANSWER-
13.3 Amps
The __________must be grounded in a bussed glutter if use as the main service
equipmemt - 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 liquid-tight flexible metal conduit is use for - CORRECT
ANSWER-A moisture seal
A good electrical connection should - CORRECT ANSWER-Be mechanically and
electrically secure
The symbol normally use for duplex - CORRECT ANSWER-Circle with two
parallel lines draw through it
Disconnecting means are covered in - CORRECT ANSWER-NEC section 110-22
,In relation to switches, the term throw refers to the - CORRECT ANSWER-
Number of internal operations that switch can perform
A 3-phase, 4-wire, 480v service requires ________ current transformers -
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
The circular mil is based on the - CORRECT ANSWER-Cross-sectional area of the
wire
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
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 increased the ________ - CORRECT ANSWER-Induced
voltage is increased
, 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 motor operate on the principle of the
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-90 Volts
The output capacity of a motor is rated in - CORRECT ANSWER-Horsepower
The synchronous speed at witcha 4 pole, 60 Hz induction motor operates is
________ rpm - CORRECT ANSWER-1800
The sine of 0 degree is - CORRECT ANSWER-0
In a AC circuit containing resistance only, _______ 12A will flow if the resistance
is 10 ohms and the voltage is 120V - CORRECT ANSWER-12A
Certification Test Latest Update
Which article of the NEC covers grounding? - CORRECT ANSWER-Article 250
What is a dropout plate? - CORRECT ANSWER-Metal plate with a curve 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
eight incandescent lighting fixtures are to be installed. Each fixture is 120 volts,
with a 200-whatt lamp what is the total connected load? - CORRECT ANSWER-
13.3 Amps
The __________must be grounded in a bussed glutter if use as the main service
equipmemt - 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 liquid-tight flexible metal conduit is use for - CORRECT
ANSWER-A moisture seal
A good electrical connection should - CORRECT ANSWER-Be mechanically and
electrically secure
The symbol normally use for duplex - CORRECT ANSWER-Circle with two
parallel lines draw through it
Disconnecting means are covered in - CORRECT ANSWER-NEC section 110-22
,In relation to switches, the term throw refers to the - CORRECT ANSWER-
Number of internal operations that switch can perform
A 3-phase, 4-wire, 480v service requires ________ current transformers -
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
The circular mil is based on the - CORRECT ANSWER-Cross-sectional area of the
wire
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
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 increased the ________ - CORRECT ANSWER-Induced
voltage is increased
, 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 motor operate on the principle of the
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-90 Volts
The output capacity of a motor is rated in - CORRECT ANSWER-Horsepower
The synchronous speed at witcha 4 pole, 60 Hz induction motor operates is
________ rpm - CORRECT ANSWER-1800
The sine of 0 degree is - CORRECT ANSWER-0
In a AC circuit containing resistance only, _______ 12A will flow if the resistance
is 10 ohms and the voltage is 120V - CORRECT ANSWER-12A
