NICET Electrical Power Testing – Level I
Practice Exam Questions And Correct
Answers (Verified Answers) Plus Rationales
2026 Q&A | Instant Download PDF
1. What is the primary purpose of a multimeter in electrical testing?
A. Measure fluid pressure
B. Measure physical dimensions
C. Measure electrical voltage, current, and resistance
D. Measure sound intensity
C
Multimeters are used to measure voltage, current, and resistance
in circuits.
2. Which personal protective equipment (PPE) is required when
performing electrical testing?
A. Safety glasses only
B. Rubber gloves, safety glasses, and flame-resistant clothing
C. Hard hat only
D. Steel-toed boots only
B
Electrical work requires PPE that protects against shock, arc flash,
and burns.
3. What does the term “grounding” mean in electrical systems?
A. Connecting a circuit to a battery
B. Connecting electrical equipment to the earth
C. Installing switches in a circuit
, D. Increasing voltage in a circuit
B
Grounding provides a safe path for electricity to dissipate into the
earth.
4. When testing a circuit with a multimeter, which setting is used to
measure resistance?
A. V
B. A
C. Ω
D. W
C
The ohm (Ω) setting measures the resistance in a circuit.
5. What is the function of a circuit breaker?
A. Generate electricity
B. Store electrical energy
C. Protect circuits from overcurrent
D. Measure current
C
Circuit breakers automatically interrupt current flow during
overloads or short circuits.
6. Which color is commonly used for a grounded conductor in North
America?
A. Black
B. Red
C. Green or bare
D. White
D
The white wire is typically the neutral conductor and is grounded.
, 7. What is the purpose of insulation on electrical wires?
A. Conduct electricity
B. Protect from mechanical damage
C. Prevent electrical shock and short circuits
D. Reduce energy consumption
C
Insulation prevents direct contact with live conductors.
8. Before working on a live electrical circuit, what should always be
done?
A. Paint the wires
B. Verify the circuit is de-energized
C. Disconnect tools
D. Measure air temperature
B
Verifying that a circuit is de-energized ensures safety and prevents
shocks.
9. Which instrument measures alternating current (AC) without
breaking the circuit?
A. Standard multimeter
B. Clamp meter
C. Ohmmeter
D. Voltmeter only
B
Clamp meters measure current flowing through a conductor
without direct contact.
10. What is the standard voltage of residential electrical outlets
in the United States?
A. 120 volts
B. 24 volts
Practice Exam Questions And Correct
Answers (Verified Answers) Plus Rationales
2026 Q&A | Instant Download PDF
1. What is the primary purpose of a multimeter in electrical testing?
A. Measure fluid pressure
B. Measure physical dimensions
C. Measure electrical voltage, current, and resistance
D. Measure sound intensity
C
Multimeters are used to measure voltage, current, and resistance
in circuits.
2. Which personal protective equipment (PPE) is required when
performing electrical testing?
A. Safety glasses only
B. Rubber gloves, safety glasses, and flame-resistant clothing
C. Hard hat only
D. Steel-toed boots only
B
Electrical work requires PPE that protects against shock, arc flash,
and burns.
3. What does the term “grounding” mean in electrical systems?
A. Connecting a circuit to a battery
B. Connecting electrical equipment to the earth
C. Installing switches in a circuit
, D. Increasing voltage in a circuit
B
Grounding provides a safe path for electricity to dissipate into the
earth.
4. When testing a circuit with a multimeter, which setting is used to
measure resistance?
A. V
B. A
C. Ω
D. W
C
The ohm (Ω) setting measures the resistance in a circuit.
5. What is the function of a circuit breaker?
A. Generate electricity
B. Store electrical energy
C. Protect circuits from overcurrent
D. Measure current
C
Circuit breakers automatically interrupt current flow during
overloads or short circuits.
6. Which color is commonly used for a grounded conductor in North
America?
A. Black
B. Red
C. Green or bare
D. White
D
The white wire is typically the neutral conductor and is grounded.
, 7. What is the purpose of insulation on electrical wires?
A. Conduct electricity
B. Protect from mechanical damage
C. Prevent electrical shock and short circuits
D. Reduce energy consumption
C
Insulation prevents direct contact with live conductors.
8. Before working on a live electrical circuit, what should always be
done?
A. Paint the wires
B. Verify the circuit is de-energized
C. Disconnect tools
D. Measure air temperature
B
Verifying that a circuit is de-energized ensures safety and prevents
shocks.
9. Which instrument measures alternating current (AC) without
breaking the circuit?
A. Standard multimeter
B. Clamp meter
C. Ohmmeter
D. Voltmeter only
B
Clamp meters measure current flowing through a conductor
without direct contact.
10. What is the standard voltage of residential electrical outlets
in the United States?
A. 120 volts
B. 24 volts
