THE ELECTRICAL NCCER TEST 2025/2026 QUESTIONS WITH
SOLUTIONS GRADED A+
✔✔The circular mil is based on the - ✔✔Cross-sectional area of the wire
✔✔Of the termination classes listed below, ____ is the only one that provides a seal
against external elements. - ✔✔Class 1
✔✔Unless otherwise noted. the calculations in AC circuits _____ values. - ✔✔Rms
✔✔When the coil turns are increased the _____ - ✔✔Induced voltage is increased
✔✔As the temperature surrounding a self-regulating heating cable rises, the ____ -
✔✔Resistance of the polymeric core increases
✔✔The motor type that has the highest starting torque is the ____ motor. -
✔✔Capacitor-start
✔✔For a given number of poles, the ____ determines the speed of an AC motor. -
✔✔Frequency
✔✔Both induction and synchronous motors operate on the principle of a rotating ____
field - ✔✔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: - ✔✔90Volts
✔✔The output capacity of a motor is rated in - ✔✔Horsepower
✔✔The synchronous speed at which a pole, 60 Hz induction motor operates is rpm. -
✔✔1,800
✔✔The sine of 0 degree is - ✔✔0
✔✔Meters used in AC circuits indicate the - ✔✔Effective
✔✔The component labeled 7 in figure 1 is a(n) - ✔✔End seal
✔✔In an AC circuit containing resistance only _____ will flow if the resistance is 10
ohms and the voltage is 120V. - ✔✔12A
✔✔The _____ rotor types are generally rugged. - ✔✔Squirrel cage
,✔✔Proofs tests are made at_ of the original factory voltage. - ✔✔60%
✔✔Which type of heating cable cannot be cut and terminated in the field? - ✔✔Mineral
insulated
✔✔The secondary of a CT under load should not be opened because of_. - ✔✔Induced
high voltage
✔✔In a transformer ______ - ✔✔Electromagnetic Induction Ocurs
✔✔When a ground rod is installed, the top of the rod must be positioned ______ grade.
- ✔✔Flush with or below
✔✔When making offset bends, the two kicks must be made perfectly parallel or the
resulting offset will have a _____ - ✔✔Crooked Bend
✔✔conduit that requires a 90 degree change in direction, except 42.All of the following
types of condulet may be used as a pulling point for _____ - ✔✔C
✔✔To be effective, a grounding system must limit the voltage on the electrical system
and protect it from all of the following, except _____ - ✔✔Undervoltage conditions
✔✔What is the MOST common service used in a temporary power panel? - ✔✔120/240
volt, 1-phase, 3-wire
✔✔What are the 2 MOST common types of overcurrent protective devices? - ✔✔Circuit
breakers and fuses
✔✔What instrument is used to perform an insulation-resistance test on a 480- volt
motor winding? - ✔✔Megohmmeter
✔✔Why is a seal installed in a run of conduit in a Class I location? - ✔✔Prevent the
passage of explosive gases in the conduit
✔✔Which of the following is the correct formula for OHM's law? - ✔✔I=E/R
✔✔Which of the following testing instruments operated on the current transformer
principle? - ✔✔Clamp-on ammeter
✔✔A 120/208 volt feeder consists of an 800 ft run of 500 kcmil aluminum wire in
conduit. This feeder has 5% voltage drop. What will the phase-to-phase voltage be at
the load end? - ✔✔197.60 volts
, ✔✔What is voltage? - ✔✔Electromotive force
✔✔A drawing showing a point A to point B hookup of conductors is called a - ✔✔Wiring
diagram
✔✔What does HOA usually mean in a motor control circuit? - ✔✔Hands of Automatic
✔✔What is the standard wire size system used in the United States? - ✔✔AWG
✔✔A switch labeled "AL-CU" can be used with what type of wire? - ✔✔Aluminum
Copper or Copper Clad Aluminum
✔✔What type of conduit fitting is usually placed in the middle of a long run of rigid metal
conduit to provide access for pulling wire? - ✔✔C
✔✔What is the largest size of aluminum rigid conduit couplings? - ✔✔6"
✔✔What is the purpose of the thermocouple? - ✔✔To measure temperature
✔✔A brass-colored terminal on a receptacle indicates that it should be used to connect
what type of wire? - ✔✔Hot wire
✔✔What is the standard length of rigid conduit? - ✔✔10 FT
✔✔An angle or U-pull is made with 14 wire or larger. The distance between each
raceway entry inside the box and the any less than how many times the trade opposite
wall of the box shall NOT be diameter of the largest raceway? - ✔✔6 times
✔✔Where should stress cone be used? - ✔✔High Voltage Termination
✔✔A cable rated for 5KV insulation can safely carry what MAXIMUM voltage? -
✔✔5,000 volts
✔✔What is the PRIMARY consideration in selecting the proper rope for a cable pull? -
✔✔Safety
✔✔Which of the following statements describes the operating features of a thermal
overload relay? - ✔✔The greater the overload, the shorter the time of tripping.
✔✔Normally, the easiest place to reverse the leads to change the direction of rotation of
a 3-phase motor is at the - ✔✔Motor Starter
SOLUTIONS GRADED A+
✔✔The circular mil is based on the - ✔✔Cross-sectional area of the wire
✔✔Of the termination classes listed below, ____ is the only one that provides a seal
against external elements. - ✔✔Class 1
✔✔Unless otherwise noted. the calculations in AC circuits _____ values. - ✔✔Rms
✔✔When the coil turns are increased the _____ - ✔✔Induced voltage is increased
✔✔As the temperature surrounding a self-regulating heating cable rises, the ____ -
✔✔Resistance of the polymeric core increases
✔✔The motor type that has the highest starting torque is the ____ motor. -
✔✔Capacitor-start
✔✔For a given number of poles, the ____ determines the speed of an AC motor. -
✔✔Frequency
✔✔Both induction and synchronous motors operate on the principle of a rotating ____
field - ✔✔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: - ✔✔90Volts
✔✔The output capacity of a motor is rated in - ✔✔Horsepower
✔✔The synchronous speed at which a pole, 60 Hz induction motor operates is rpm. -
✔✔1,800
✔✔The sine of 0 degree is - ✔✔0
✔✔Meters used in AC circuits indicate the - ✔✔Effective
✔✔The component labeled 7 in figure 1 is a(n) - ✔✔End seal
✔✔In an AC circuit containing resistance only _____ will flow if the resistance is 10
ohms and the voltage is 120V. - ✔✔12A
✔✔The _____ rotor types are generally rugged. - ✔✔Squirrel cage
,✔✔Proofs tests are made at_ of the original factory voltage. - ✔✔60%
✔✔Which type of heating cable cannot be cut and terminated in the field? - ✔✔Mineral
insulated
✔✔The secondary of a CT under load should not be opened because of_. - ✔✔Induced
high voltage
✔✔In a transformer ______ - ✔✔Electromagnetic Induction Ocurs
✔✔When a ground rod is installed, the top of the rod must be positioned ______ grade.
- ✔✔Flush with or below
✔✔When making offset bends, the two kicks must be made perfectly parallel or the
resulting offset will have a _____ - ✔✔Crooked Bend
✔✔conduit that requires a 90 degree change in direction, except 42.All of the following
types of condulet may be used as a pulling point for _____ - ✔✔C
✔✔To be effective, a grounding system must limit the voltage on the electrical system
and protect it from all of the following, except _____ - ✔✔Undervoltage conditions
✔✔What is the MOST common service used in a temporary power panel? - ✔✔120/240
volt, 1-phase, 3-wire
✔✔What are the 2 MOST common types of overcurrent protective devices? - ✔✔Circuit
breakers and fuses
✔✔What instrument is used to perform an insulation-resistance test on a 480- volt
motor winding? - ✔✔Megohmmeter
✔✔Why is a seal installed in a run of conduit in a Class I location? - ✔✔Prevent the
passage of explosive gases in the conduit
✔✔Which of the following is the correct formula for OHM's law? - ✔✔I=E/R
✔✔Which of the following testing instruments operated on the current transformer
principle? - ✔✔Clamp-on ammeter
✔✔A 120/208 volt feeder consists of an 800 ft run of 500 kcmil aluminum wire in
conduit. This feeder has 5% voltage drop. What will the phase-to-phase voltage be at
the load end? - ✔✔197.60 volts
, ✔✔What is voltage? - ✔✔Electromotive force
✔✔A drawing showing a point A to point B hookup of conductors is called a - ✔✔Wiring
diagram
✔✔What does HOA usually mean in a motor control circuit? - ✔✔Hands of Automatic
✔✔What is the standard wire size system used in the United States? - ✔✔AWG
✔✔A switch labeled "AL-CU" can be used with what type of wire? - ✔✔Aluminum
Copper or Copper Clad Aluminum
✔✔What type of conduit fitting is usually placed in the middle of a long run of rigid metal
conduit to provide access for pulling wire? - ✔✔C
✔✔What is the largest size of aluminum rigid conduit couplings? - ✔✔6"
✔✔What is the purpose of the thermocouple? - ✔✔To measure temperature
✔✔A brass-colored terminal on a receptacle indicates that it should be used to connect
what type of wire? - ✔✔Hot wire
✔✔What is the standard length of rigid conduit? - ✔✔10 FT
✔✔An angle or U-pull is made with 14 wire or larger. The distance between each
raceway entry inside the box and the any less than how many times the trade opposite
wall of the box shall NOT be diameter of the largest raceway? - ✔✔6 times
✔✔Where should stress cone be used? - ✔✔High Voltage Termination
✔✔A cable rated for 5KV insulation can safely carry what MAXIMUM voltage? -
✔✔5,000 volts
✔✔What is the PRIMARY consideration in selecting the proper rope for a cable pull? -
✔✔Safety
✔✔Which of the following statements describes the operating features of a thermal
overload relay? - ✔✔The greater the overload, the shorter the time of tripping.
✔✔Normally, the easiest place to reverse the leads to change the direction of rotation of
a 3-phase motor is at the - ✔✔Motor Starter
