Nevada Industrial Electrician
Certification Exam Practice Questions
And Correct Answers (Verified Answers)
Plus Rationales 2026 Q&A | Instant
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1. What is the primary purpose of the National Electrical Code (NEC)?
A. To provide design guidelines for architects
B. To ensure safe electrical installation practices
C. To regulate electrical utility companies
D. To certify electricians
Answer: B
The NEC establishes minimum safety standards for electrical
installations to protect people and property from hazards.
2. What does Ohm’s Law state?
A. Power equals voltage divided by resistance
B. Voltage equals current times resistance
C. Resistance equals voltage times current
D. Current equals voltage plus resistance
Answer: B
Ohm’s Law defines the relationship V = I × R, meaning voltage equals
current multiplied by resistance.
3. Which unit measures electrical resistance?
A. Volt
B. Ampere
C. Ohm
D. Watt
Answer: C
, Resistance is measured in ohms, representing opposition to current
flow.
4. What is the function of a circuit breaker?
A. To increase voltage
B. To measure current
C. To protect against overcurrent
D. To store energy
Answer: C
Circuit breakers interrupt current flow when it exceeds safe limits,
preventing damage and fire hazards.
5. What type of current is typically supplied to industrial facilities?
A. Direct current only
B. Alternating current
C. Pulsating current
D. Static current
Answer: B
Industrial facilities primarily use alternating current due to its
efficiency in transmission and transformation.
6. What does a transformer do?
A. Converts AC to DC
B. Changes voltage levels
C. Stores electrical energy
D. Measures resistance
Answer: B
Transformers increase or decrease AC voltage through
electromagnetic induction.
7. Which device is used to measure voltage?
A. Ammeter
B. Ohmmeter
C. Voltmeter
D. Wattmeter
Answer: C
A voltmeter is connected in parallel to measure electrical potential
difference.
, 8. What is the unit of electrical power?
A. Volt
B. Ampere
C. Watt
D. Ohm
Answer: C
Power is measured in watts and represents the rate of energy
consumption.
9. What does grounding provide?
A. Increased voltage
B. Path for fault current
C. Reduced resistance
D. Increased current
Answer: B
Grounding provides a safe path for fault current to prevent shock and
equipment damage.
10. What is a short circuit?
A. High resistance connection
B. Open circuit
C. Unintended low-resistance path
D. Controlled circuit
Answer: C
A short circuit occurs when current flows through an unintended low-
resistance path, causing excessive current.
11. What is the purpose of a fuse?
A. To regulate voltage
B. To measure current
C. To protect circuits from overcurrent
D. To store energy
Answer: C
Fuses melt when current exceeds a safe level, breaking the circuit.
12. What does amperage measure?
A. Voltage
B. Power
C. Current flow
Certification Exam Practice Questions
And Correct Answers (Verified Answers)
Plus Rationales 2026 Q&A | Instant
Download Pdf
1. What is the primary purpose of the National Electrical Code (NEC)?
A. To provide design guidelines for architects
B. To ensure safe electrical installation practices
C. To regulate electrical utility companies
D. To certify electricians
Answer: B
The NEC establishes minimum safety standards for electrical
installations to protect people and property from hazards.
2. What does Ohm’s Law state?
A. Power equals voltage divided by resistance
B. Voltage equals current times resistance
C. Resistance equals voltage times current
D. Current equals voltage plus resistance
Answer: B
Ohm’s Law defines the relationship V = I × R, meaning voltage equals
current multiplied by resistance.
3. Which unit measures electrical resistance?
A. Volt
B. Ampere
C. Ohm
D. Watt
Answer: C
, Resistance is measured in ohms, representing opposition to current
flow.
4. What is the function of a circuit breaker?
A. To increase voltage
B. To measure current
C. To protect against overcurrent
D. To store energy
Answer: C
Circuit breakers interrupt current flow when it exceeds safe limits,
preventing damage and fire hazards.
5. What type of current is typically supplied to industrial facilities?
A. Direct current only
B. Alternating current
C. Pulsating current
D. Static current
Answer: B
Industrial facilities primarily use alternating current due to its
efficiency in transmission and transformation.
6. What does a transformer do?
A. Converts AC to DC
B. Changes voltage levels
C. Stores electrical energy
D. Measures resistance
Answer: B
Transformers increase or decrease AC voltage through
electromagnetic induction.
7. Which device is used to measure voltage?
A. Ammeter
B. Ohmmeter
C. Voltmeter
D. Wattmeter
Answer: C
A voltmeter is connected in parallel to measure electrical potential
difference.
, 8. What is the unit of electrical power?
A. Volt
B. Ampere
C. Watt
D. Ohm
Answer: C
Power is measured in watts and represents the rate of energy
consumption.
9. What does grounding provide?
A. Increased voltage
B. Path for fault current
C. Reduced resistance
D. Increased current
Answer: B
Grounding provides a safe path for fault current to prevent shock and
equipment damage.
10. What is a short circuit?
A. High resistance connection
B. Open circuit
C. Unintended low-resistance path
D. Controlled circuit
Answer: C
A short circuit occurs when current flows through an unintended low-
resistance path, causing excessive current.
11. What is the purpose of a fuse?
A. To regulate voltage
B. To measure current
C. To protect circuits from overcurrent
D. To store energy
Answer: C
Fuses melt when current exceeds a safe level, breaking the circuit.
12. What does amperage measure?
A. Voltage
B. Power
C. Current flow
