The electrical NCCER test
1. Which Article of the NEC covers grounding?: article 250
2. Which of the following is a 90 degree, explosion proof fitting?: GUAL
3. What is a dropout plate?: Metal plate with a curved surface for cable to
followas it passes from the tray
4. All of the following are common service voltages in the United States
EXCEPT:: 372/575 3-PHASE, 4-WIRE
5. What does a GFCI breaker do?: Opens a circuit to prevent
operation of anelectrical device
6. What will happen when one or more coils in a winding are grounded?:
Themotor will automatically blow fuses
7. Eight incandescent lighting fixtures are to be installed. Each fixture is 120-
volts, with a 200-watt lamp. What is the total connected load?: 13.3
amps
8. The must be grounded in a bussed gutter if used as the main service
,equipment.: Neutral busbar
9. When wall mounting cable tray, ensure that: The building structure is strong
enough to support the tray system
10. The purpose of sealing cable ends when reels of cable are in storage is: To
keep moisture from creeping in
11. The outer covering on liguid-tight flexible metal conduit is used for: A
moisture seal
12. A good electrical connection should: Be mechanically and electrically secure
13. The symbol normally used for duplex: Circle with two parallel lines drawb
through it
14. Disconnecting means are covered in: NEC Section 110-22
15. In relation to switches, the term throw refers to the: Number of internal
operations that a switch can perform
16. A 3-phase, 4-wire, 480v service requires current transformer(s): 3
17. Services conductors and equipment are covered in: NEC Article 230
18. The NEC required that all receptacles installed on 25 amp and 20 amp
branch circuits be receptacles: Grounding
19. A transformer with the primary of 400 turns and a secondary of 300 turns
has a : Step-down turns ratio of 4:3
,20. The circular mil is based on the: Cross-sectional area of the wire
21. Of the termination classes listed below, is the only one that provides
a seal against external elements.: Class 1
22. Unless otherwise noted. the calculations in AC circuits values.: Rms
23. When the coil turns are increased the : Induced voltage is increased
24. As the temperature surrounding a self-regulating heating cable rises, the
: Resistance of the polymeric core increases
, 25. The motor type that has the highest starting torque is the motor.: Ca-
pacitor-start
26. For a given number of poles, the determines the speed of an AC
motor.: Frequency
27. Both induction and synchronous motors operate on the principle of a
rotating field: Magnetic
28. 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
29. The output capacity of a motor is rated in: Horsepower
30. The synchronous speed at which a pole, 60 Hz induction motor operates
is rpm.: 1,800
31. The sine of 0 degree is: 0
32. Meters used in AC circuits indicate the: Effective
33. The component labeled 7 in figure 1 is a(n): End seal
34. In an AC circuit containing resistance only will flow if the resistance
is 10 ohms and the voltage is 120V.: 12A
35. The rotor types are generally rugged.: Squirrel cage
36. Proofs tests are made at_ of the original factory voltage.: 60%
37. Which type of heating cable cannot be cut and terminated in the field?: -
1. Which Article of the NEC covers grounding?: article 250
2. Which of the following is a 90 degree, explosion proof fitting?: GUAL
3. What is a dropout plate?: Metal plate with a curved surface for cable to
followas it passes from the tray
4. All of the following are common service voltages in the United States
EXCEPT:: 372/575 3-PHASE, 4-WIRE
5. What does a GFCI breaker do?: Opens a circuit to prevent
operation of anelectrical device
6. What will happen when one or more coils in a winding are grounded?:
Themotor will automatically blow fuses
7. Eight incandescent lighting fixtures are to be installed. Each fixture is 120-
volts, with a 200-watt lamp. What is the total connected load?: 13.3
amps
8. The must be grounded in a bussed gutter if used as the main service
,equipment.: Neutral busbar
9. When wall mounting cable tray, ensure that: The building structure is strong
enough to support the tray system
10. The purpose of sealing cable ends when reels of cable are in storage is: To
keep moisture from creeping in
11. The outer covering on liguid-tight flexible metal conduit is used for: A
moisture seal
12. A good electrical connection should: Be mechanically and electrically secure
13. The symbol normally used for duplex: Circle with two parallel lines drawb
through it
14. Disconnecting means are covered in: NEC Section 110-22
15. In relation to switches, the term throw refers to the: Number of internal
operations that a switch can perform
16. A 3-phase, 4-wire, 480v service requires current transformer(s): 3
17. Services conductors and equipment are covered in: NEC Article 230
18. The NEC required that all receptacles installed on 25 amp and 20 amp
branch circuits be receptacles: Grounding
19. A transformer with the primary of 400 turns and a secondary of 300 turns
has a : Step-down turns ratio of 4:3
,20. The circular mil is based on the: Cross-sectional area of the wire
21. Of the termination classes listed below, is the only one that provides
a seal against external elements.: Class 1
22. Unless otherwise noted. the calculations in AC circuits values.: Rms
23. When the coil turns are increased the : Induced voltage is increased
24. As the temperature surrounding a self-regulating heating cable rises, the
: Resistance of the polymeric core increases
, 25. The motor type that has the highest starting torque is the motor.: Ca-
pacitor-start
26. For a given number of poles, the determines the speed of an AC
motor.: Frequency
27. Both induction and synchronous motors operate on the principle of a
rotating field: Magnetic
28. 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
29. The output capacity of a motor is rated in: Horsepower
30. The synchronous speed at which a pole, 60 Hz induction motor operates
is rpm.: 1,800
31. The sine of 0 degree is: 0
32. Meters used in AC circuits indicate the: Effective
33. The component labeled 7 in figure 1 is a(n): End seal
34. In an AC circuit containing resistance only will flow if the resistance
is 10 ohms and the voltage is 120V.: 12A
35. The rotor types are generally rugged.: Squirrel cage
36. Proofs tests are made at_ of the original factory voltage.: 60%
37. Which type of heating cable cannot be cut and terminated in the field?: -
