1
THE ELECTRICAL NCCER TEST (Electrical Study Guide)
. Questions With correct and verified Answers. A+
GRADED.
Which Article of the NEC covers grounding? - ...(ANSWERS)....article 250
Which of the following is a 90 degree, explosion proof fitting? -
...(ANSWERS)....GUAL
What is a dropout plate? - ...(ANSWERS)....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: -
...(ANSWERS)....372/575 3-PHASE, 4-WIRE
What does a GFCI breaker do? - ...(ANSWERS)....Opens a circuit to prevent
operation of an electrical device
What will happen when one or more coils in a winding are grounded? -
...(ANSWERS)....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? - ...(ANSWERS)....13.3
amps
, 2
The must be grounded in a bussed gutter if used as the main service equipment. -
...(ANSWERS)....Neutral busbar
When wall mounting cable tray, ensure that - ...(ANSWERS)....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 -
...(ANSWERS)....To keep moisture from creeping in
The outer covering on liguid-tight flexible metal conduit is used for -
...(ANSWERS)....A moisture seal
A good electrical connection should - ...(ANSWERS)....Be mechanically and
electrically secure
The symbol normally used for duplex - ...(ANSWERS)....Circle with two parallel
lines drawb through it
Disconnecting means are covered in - ...(ANSWERS)....NEC Section 110-22
In relation to switches, the term throw refers to the - ...(ANSWERS)....Number of
internal operations that a switch can perform
, 3
A 3-phase, 4-wire, 480v service requires ______ current transformer(s) -
...(ANSWERS)....3
Services conductors and equipment are covered in - ...(ANSWERS)....NEC Article
230
The NEC required that all receptacles installed on 25 amp and 20 amp branch
circuits be ______ receptacles - ...(ANSWERS)....Grounding
A transformer with the primary of 400 turns and a secondary of 300 turns has a
_____ - ...(ANSWERS)....Step-down turns ratio of 4:3
The circular mil is based on the - ...(ANSWERS)....Cross-sectional area of the wire
Of the termination classes listed below, ____ is the only one that provides a seal
against external elements. - ...(ANSWERS)....Class 1
Unless otherwise noted. the calculations in AC circuits _____ values. -
...(ANSWERS)....Rms
When the coil turns are increased the _____ - ...(ANSWERS)....Induced voltage is
increased
, 4
As the temperature surrounding a self-regulating heating cable rises, the ____ -
...(ANSWERS)....Resistance of the polymeric core increases
The motor type that has the highest starting torque is the ____ motor. -
...(ANSWERS)....Capacitor-start
For a given number of poles, the ____ determines the speed of an AC motor. -
...(ANSWERS)....Frequency
Both induction and synchronous motors operate on the principle of a rotating
____ field - ...(ANSWERS)....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: -
...(ANSWERS)....90Volts
The output capacity of a motor is rated in - ...(ANSWERS)....Horsepower
The synchronous speed at which a pole, 60 Hz induction motor operates is rpm. -
...(ANSWERS)....1,800
The sine of 0 degree is - ...(ANSWERS)....0
Meters used in AC circuits indicate the - ...(ANSWERS)....Effective
THE ELECTRICAL NCCER TEST (Electrical Study Guide)
. Questions With correct and verified Answers. A+
GRADED.
Which Article of the NEC covers grounding? - ...(ANSWERS)....article 250
Which of the following is a 90 degree, explosion proof fitting? -
...(ANSWERS)....GUAL
What is a dropout plate? - ...(ANSWERS)....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: -
...(ANSWERS)....372/575 3-PHASE, 4-WIRE
What does a GFCI breaker do? - ...(ANSWERS)....Opens a circuit to prevent
operation of an electrical device
What will happen when one or more coils in a winding are grounded? -
...(ANSWERS)....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? - ...(ANSWERS)....13.3
amps
, 2
The must be grounded in a bussed gutter if used as the main service equipment. -
...(ANSWERS)....Neutral busbar
When wall mounting cable tray, ensure that - ...(ANSWERS)....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 -
...(ANSWERS)....To keep moisture from creeping in
The outer covering on liguid-tight flexible metal conduit is used for -
...(ANSWERS)....A moisture seal
A good electrical connection should - ...(ANSWERS)....Be mechanically and
electrically secure
The symbol normally used for duplex - ...(ANSWERS)....Circle with two parallel
lines drawb through it
Disconnecting means are covered in - ...(ANSWERS)....NEC Section 110-22
In relation to switches, the term throw refers to the - ...(ANSWERS)....Number of
internal operations that a switch can perform
, 3
A 3-phase, 4-wire, 480v service requires ______ current transformer(s) -
...(ANSWERS)....3
Services conductors and equipment are covered in - ...(ANSWERS)....NEC Article
230
The NEC required that all receptacles installed on 25 amp and 20 amp branch
circuits be ______ receptacles - ...(ANSWERS)....Grounding
A transformer with the primary of 400 turns and a secondary of 300 turns has a
_____ - ...(ANSWERS)....Step-down turns ratio of 4:3
The circular mil is based on the - ...(ANSWERS)....Cross-sectional area of the wire
Of the termination classes listed below, ____ is the only one that provides a seal
against external elements. - ...(ANSWERS)....Class 1
Unless otherwise noted. the calculations in AC circuits _____ values. -
...(ANSWERS)....Rms
When the coil turns are increased the _____ - ...(ANSWERS)....Induced voltage is
increased
, 4
As the temperature surrounding a self-regulating heating cable rises, the ____ -
...(ANSWERS)....Resistance of the polymeric core increases
The motor type that has the highest starting torque is the ____ motor. -
...(ANSWERS)....Capacitor-start
For a given number of poles, the ____ determines the speed of an AC motor. -
...(ANSWERS)....Frequency
Both induction and synchronous motors operate on the principle of a rotating
____ field - ...(ANSWERS)....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: -
...(ANSWERS)....90Volts
The output capacity of a motor is rated in - ...(ANSWERS)....Horsepower
The synchronous speed at which a pole, 60 Hz induction motor operates is rpm. -
...(ANSWERS)....1,800
The sine of 0 degree is - ...(ANSWERS)....0
Meters used in AC circuits indicate the - ...(ANSWERS)....Effective
