NYC Electrician Exam (Civil Service) Newest
2025- 2026 Updated Practice Exam | 100
Actual Most Tested Questions Collections
& Verified Detailed Answers | Tutor
Verified Success Exam) Graded A+
1. What is the primary purpose of the National Electrical Code (NEC)?
A. To provide design recommendations only
B. To establish minimum safety standards for electrical installations
C. To regulate utility companies
D. To replace local building codes
Answer: B ✓
The NEC sets minimum safety standards to protect persons and property
from electrical hazards.
2. Which type of current is typically supplied to residential homes in NYC?
A. Direct current (DC)
B. Alternating current (AC)
C. Pulsating current
D. Static current
Answer: B ✓
Residential systems use alternating current (AC) because it is efficient for
transmission and distribution.
3. What does AWG stand for in electrical wiring?
A. American Wire Gauge
B. Alternating Watt Grid
C. Ampere Wiring Guide
D. American Watt Grade
, Answer: A ✓
AWG refers to wire size standards, determining current-carrying capacity.
4. A circuit breaker is designed to:
A. Increase voltage
B. Store energy
C. Protect circuits from overload
D. Convert AC to DC
Answer: C ✓
Circuit breakers provide overcurrent protection, preventing damage and fire
hazards.
5. What color is typically used for grounding conductors?
A. Red
B. Black
C. Green
D. Blue
Answer: C ✓
The green wire identifies the equipment grounding conductor for safety.
6. Ohm’s Law states that voltage equals:
A. Current divided by resistance
B. Current multiplied by resistance
C. Resistance divided by current
D. Power multiplied by current
Answer: B ✓
Ohm’s Law: V = I × R, relating voltage, current, and resistance.
7. What is the unit of electrical resistance?
A. Volt
B. Watt
C. Ohm
D. Ampere
, Answer: C ✓
Resistance is measured in ohms, indicating opposition to current flow.
8. Conduit is used to:
A. Generate electricity
B. Protect and route wiring
C. Measure voltage
D. Increase resistance
Answer: B ✓
Conduit provides physical protection and organizes electrical conductors.
9. What is a GFCI designed to protect against?
A. Overvoltage
B. Ground faults
C. Short circuits only
D. Power surges
Answer: B ✓
GFCIs detect ground faults and quickly disconnect power to prevent shock.
10.Which tool measures electrical current?
A. Voltmeter
B. Ammeter
C. Ohmmeter
D. Wattmeter
Answer: B ✓
An ammeter measures current flow in amperes.
11.What is the minimum burial depth for direct-buried residential cable
(general NEC guidance)?
A. 6 inches
B. 12 inches
C. 24 inches
D. 36 inches
, Answer: C ✓
Typical NEC requirement is 24 inches for direct burial cable.
12.What type of wire insulation is commonly used in dry locations?
A. THHN
B. UF
C. USE
D. XHHW
Answer: A ✓
THHN is rated for dry and damp environments and widely used.
13.What does a transformer do?
A. Stores energy
B. Changes voltage levels
C. Measures resistance
D. Grounds circuits
Answer: B ✓
Transformers step up or step down voltage for distribution.
14.What is a short circuit?
A. Normal operation
B. Excessive resistance
C. Unintended low-resistance path
D. Grounding method
Answer: C ✓
A short circuit creates a low-resistance path, causing high current flow.
15.What is the function of a fuse?
A. Increase voltage
B. Break circuit during overload
C. Store current
D. Reduce resistance
Answer: B ✓
A fuse melts under excess current, interrupting the circuit.
2025- 2026 Updated Practice Exam | 100
Actual Most Tested Questions Collections
& Verified Detailed Answers | Tutor
Verified Success Exam) Graded A+
1. What is the primary purpose of the National Electrical Code (NEC)?
A. To provide design recommendations only
B. To establish minimum safety standards for electrical installations
C. To regulate utility companies
D. To replace local building codes
Answer: B ✓
The NEC sets minimum safety standards to protect persons and property
from electrical hazards.
2. Which type of current is typically supplied to residential homes in NYC?
A. Direct current (DC)
B. Alternating current (AC)
C. Pulsating current
D. Static current
Answer: B ✓
Residential systems use alternating current (AC) because it is efficient for
transmission and distribution.
3. What does AWG stand for in electrical wiring?
A. American Wire Gauge
B. Alternating Watt Grid
C. Ampere Wiring Guide
D. American Watt Grade
, Answer: A ✓
AWG refers to wire size standards, determining current-carrying capacity.
4. A circuit breaker is designed to:
A. Increase voltage
B. Store energy
C. Protect circuits from overload
D. Convert AC to DC
Answer: C ✓
Circuit breakers provide overcurrent protection, preventing damage and fire
hazards.
5. What color is typically used for grounding conductors?
A. Red
B. Black
C. Green
D. Blue
Answer: C ✓
The green wire identifies the equipment grounding conductor for safety.
6. Ohm’s Law states that voltage equals:
A. Current divided by resistance
B. Current multiplied by resistance
C. Resistance divided by current
D. Power multiplied by current
Answer: B ✓
Ohm’s Law: V = I × R, relating voltage, current, and resistance.
7. What is the unit of electrical resistance?
A. Volt
B. Watt
C. Ohm
D. Ampere
, Answer: C ✓
Resistance is measured in ohms, indicating opposition to current flow.
8. Conduit is used to:
A. Generate electricity
B. Protect and route wiring
C. Measure voltage
D. Increase resistance
Answer: B ✓
Conduit provides physical protection and organizes electrical conductors.
9. What is a GFCI designed to protect against?
A. Overvoltage
B. Ground faults
C. Short circuits only
D. Power surges
Answer: B ✓
GFCIs detect ground faults and quickly disconnect power to prevent shock.
10.Which tool measures electrical current?
A. Voltmeter
B. Ammeter
C. Ohmmeter
D. Wattmeter
Answer: B ✓
An ammeter measures current flow in amperes.
11.What is the minimum burial depth for direct-buried residential cable
(general NEC guidance)?
A. 6 inches
B. 12 inches
C. 24 inches
D. 36 inches
, Answer: C ✓
Typical NEC requirement is 24 inches for direct burial cable.
12.What type of wire insulation is commonly used in dry locations?
A. THHN
B. UF
C. USE
D. XHHW
Answer: A ✓
THHN is rated for dry and damp environments and widely used.
13.What does a transformer do?
A. Stores energy
B. Changes voltage levels
C. Measures resistance
D. Grounds circuits
Answer: B ✓
Transformers step up or step down voltage for distribution.
14.What is a short circuit?
A. Normal operation
B. Excessive resistance
C. Unintended low-resistance path
D. Grounding method
Answer: C ✓
A short circuit creates a low-resistance path, causing high current flow.
15.What is the function of a fuse?
A. Increase voltage
B. Break circuit during overload
C. Store current
D. Reduce resistance
Answer: B ✓
A fuse melts under excess current, interrupting the circuit.
