CJE BENCHMARK EXAM #2 QUESTIONS &
ANSWERS | 300 VERIFIED QUESTIONS WITH
COMPLETE SOLUTIONS | NCLEX-STYLE
NURSING PRACTICE | UPDATED 2026/2027
1. A helper notices a damaged extension cord with exposed conductors at a utility
worksite. What should the helper do?
A. Leave it, as another worker may need it.
B. Use it only for low-voltage tools.
C. Cover the exposed conductors with electrical tape and continue using it.
D. Remove it from service and report the hazard according to procedure.
Correct Answer: D
Rationale: An exposed conductor creates an immediate shock and fire hazard. The
damaged cord must be removed from service and reported. Electrical tape is temporary
and does not restore the cord's integrity.
2. Why should a utility helper maintain good housekeeping around an electrical
work area?
A. It guarantees no equipment can fail.
B. It reduces trip hazards, improves access, and supports safe work around equipment.
C. It makes electrical circuits operate faster.
D. It eliminates the need for PPE.
Correct Answer: B
Rationale: Good housekeeping reduces physical hazards like trip hazards and ensures
clear access to equipment, which is a basic safety principle. It does not prevent
equipment failure or replace the need for PPE.
3. When is a helper required to use fall protection?
A. Only when the journey-level worker is watching.
B. Whenever the work exposes the helper to a fall hazard that meets the criteria
requiring fall protection under applicable safety rules.
,C. Only on roofs higher than 50 feet.
D. Never, because helpers do not work at heights.
Correct Answer: B
Rationale: Fall protection is triggered by the hazard and applicable safety rules (like
OSHA), not by the presence of a supervisor or a specific height threshold like 50 feet.
4. Which type of fire extinguisher is appropriate for electrical fires?
A. Water-based extinguisher.
B. Class C extinguisher (non-conductive agent).
C. Class A extinguisher only.
D. Foam extinguisher designed for flammable liquids only.
Correct Answer: B
Rationale: Class C extinguishers contain non-conductive agents suitable for use on
energized electrical equipment. Water and foam are conductive and create shock
hazards.
5. What is the primary purpose of personal protective equipment (PPE) in the
electrical trade?
A. To improve worker productivity.
B. To protect workers from injury and health hazards.
C. To identify a worker's job role.
D. To comply with uniform requirements.
Correct Answer: B
Rationale: The primary purpose of PPE is to protect the worker from injury and health
hazards. While compliance is a factor, the core goal is hazard mitigation.
6. What does "GFCI" stand for?
A. General Fuse Circuit Indicator.
B. Ground Fault Circuit Interrupter.
C. Grounded Feeder Current Isolator.
D. Generator Frequency Control Instrument.
Correct Answer: B
Rationale: GFCI stands for Ground Fault Circuit Interrupter. It is a safety device that
protects personnel by interrupting the circuit when a ground fault is detected.
,7. A helper is uncertain whether an assigned task is within their training or
authorization. What is the best response?
A. Ignore the uncertainty and perform the task anyway.
B. Stop and seek direction from the appropriate qualified supervisor or worker.
C. Ask an unqualified bystander for advice.
D. Perform the task quickly before anyone notices.
Correct Answer: B
Rationale: Work should always remain within the scope of an employee's training and
authorization. When uncertain, it is critical to stop and seek direction to prevent
accidents.
8. Which of the following best describes the function of a circuit breaker?
A. To permanently increase circuit capacity.
B. To automatically open a circuit when current exceeds a predetermined value and to
be resettable.
C. To convert DC to AC.
D. To measure voltage continuously.
Correct Answer: B
Rationale: Circuit breakers protect conductors and equipment by automatically
interrupting overcurrent conditions. Unlike fuses, they can be reset and reused.
9. What is the primary function of a transformer?
A. To convert AC to DC.
B. To change voltage levels between circuits through electromagnetic induction.
C. To store electrical energy.
D. To measure current flow.
Correct Answer: B
Rationale: Transformers transfer electrical energy between circuits by electromagnetic
induction, allowing voltage to be stepped up or stepped down for transmission and
distribution.
10. A helper observes that a circuit breaker repeatedly trips when a particular tool
is used. What is the most appropriate initial response?
A. Replace the breaker with a higher-ampere breaker without investigation.
B. Stop use of the tool, report the condition to the journey-level worker, and assist in
, determining whether the tool or the circuit is at fault.
C. Ignore the tripping and continue to reset the breaker.
D. Assume the breaker is defective and discard it.
Correct Answer: B
Rationale: Abnormal conditions must be reported and investigated rather than simply
overridden. Upgrading a breaker without addressing the root cause is dangerous.
11. Which of the following is a correct statement about the use of insulated tools?
A. Insulated tools may be used on any voltage without additional precautions.
B. Insulated tools provide a layer of protection when working near energized parts but
must still be used within their rated voltage and in accordance with safety procedures.
C. Insulation on tools never degrades.
D. Insulated tools eliminate the need for gloves and other PPE.
Correct Answer: B
Rationale: Insulated tools offer a layer of protection but have limitations. They must be
used within their rated voltage, and they do not eliminate the need for other PPE like
rubber gloves.
12. What is the purpose of an equipment grounding conductor?
A. To carry normal operating current.
B. To provide a low-impedance path for fault current to facilitate overcurrent device
operation and reduce shock hazard.
C. To serve as the neutral conductor.
D. To increase the voltage available to loads.
Correct Answer: B
Rationale: The equipment grounding conductor connects non-current-carrying metal
parts to ground. This provides a safe path for fault current to clear a protective device
and limit shock potential.
13. The term "arc flash" refers to:
A. A brief power outage.
B. Extreme heat, intense light, and pressure wave that can cause severe burns and injury.
C. A safe method of disconnecting power.
D. A temporary loss of radio signal.
ANSWERS | 300 VERIFIED QUESTIONS WITH
COMPLETE SOLUTIONS | NCLEX-STYLE
NURSING PRACTICE | UPDATED 2026/2027
1. A helper notices a damaged extension cord with exposed conductors at a utility
worksite. What should the helper do?
A. Leave it, as another worker may need it.
B. Use it only for low-voltage tools.
C. Cover the exposed conductors with electrical tape and continue using it.
D. Remove it from service and report the hazard according to procedure.
Correct Answer: D
Rationale: An exposed conductor creates an immediate shock and fire hazard. The
damaged cord must be removed from service and reported. Electrical tape is temporary
and does not restore the cord's integrity.
2. Why should a utility helper maintain good housekeeping around an electrical
work area?
A. It guarantees no equipment can fail.
B. It reduces trip hazards, improves access, and supports safe work around equipment.
C. It makes electrical circuits operate faster.
D. It eliminates the need for PPE.
Correct Answer: B
Rationale: Good housekeeping reduces physical hazards like trip hazards and ensures
clear access to equipment, which is a basic safety principle. It does not prevent
equipment failure or replace the need for PPE.
3. When is a helper required to use fall protection?
A. Only when the journey-level worker is watching.
B. Whenever the work exposes the helper to a fall hazard that meets the criteria
requiring fall protection under applicable safety rules.
,C. Only on roofs higher than 50 feet.
D. Never, because helpers do not work at heights.
Correct Answer: B
Rationale: Fall protection is triggered by the hazard and applicable safety rules (like
OSHA), not by the presence of a supervisor or a specific height threshold like 50 feet.
4. Which type of fire extinguisher is appropriate for electrical fires?
A. Water-based extinguisher.
B. Class C extinguisher (non-conductive agent).
C. Class A extinguisher only.
D. Foam extinguisher designed for flammable liquids only.
Correct Answer: B
Rationale: Class C extinguishers contain non-conductive agents suitable for use on
energized electrical equipment. Water and foam are conductive and create shock
hazards.
5. What is the primary purpose of personal protective equipment (PPE) in the
electrical trade?
A. To improve worker productivity.
B. To protect workers from injury and health hazards.
C. To identify a worker's job role.
D. To comply with uniform requirements.
Correct Answer: B
Rationale: The primary purpose of PPE is to protect the worker from injury and health
hazards. While compliance is a factor, the core goal is hazard mitigation.
6. What does "GFCI" stand for?
A. General Fuse Circuit Indicator.
B. Ground Fault Circuit Interrupter.
C. Grounded Feeder Current Isolator.
D. Generator Frequency Control Instrument.
Correct Answer: B
Rationale: GFCI stands for Ground Fault Circuit Interrupter. It is a safety device that
protects personnel by interrupting the circuit when a ground fault is detected.
,7. A helper is uncertain whether an assigned task is within their training or
authorization. What is the best response?
A. Ignore the uncertainty and perform the task anyway.
B. Stop and seek direction from the appropriate qualified supervisor or worker.
C. Ask an unqualified bystander for advice.
D. Perform the task quickly before anyone notices.
Correct Answer: B
Rationale: Work should always remain within the scope of an employee's training and
authorization. When uncertain, it is critical to stop and seek direction to prevent
accidents.
8. Which of the following best describes the function of a circuit breaker?
A. To permanently increase circuit capacity.
B. To automatically open a circuit when current exceeds a predetermined value and to
be resettable.
C. To convert DC to AC.
D. To measure voltage continuously.
Correct Answer: B
Rationale: Circuit breakers protect conductors and equipment by automatically
interrupting overcurrent conditions. Unlike fuses, they can be reset and reused.
9. What is the primary function of a transformer?
A. To convert AC to DC.
B. To change voltage levels between circuits through electromagnetic induction.
C. To store electrical energy.
D. To measure current flow.
Correct Answer: B
Rationale: Transformers transfer electrical energy between circuits by electromagnetic
induction, allowing voltage to be stepped up or stepped down for transmission and
distribution.
10. A helper observes that a circuit breaker repeatedly trips when a particular tool
is used. What is the most appropriate initial response?
A. Replace the breaker with a higher-ampere breaker without investigation.
B. Stop use of the tool, report the condition to the journey-level worker, and assist in
, determining whether the tool or the circuit is at fault.
C. Ignore the tripping and continue to reset the breaker.
D. Assume the breaker is defective and discard it.
Correct Answer: B
Rationale: Abnormal conditions must be reported and investigated rather than simply
overridden. Upgrading a breaker without addressing the root cause is dangerous.
11. Which of the following is a correct statement about the use of insulated tools?
A. Insulated tools may be used on any voltage without additional precautions.
B. Insulated tools provide a layer of protection when working near energized parts but
must still be used within their rated voltage and in accordance with safety procedures.
C. Insulation on tools never degrades.
D. Insulated tools eliminate the need for gloves and other PPE.
Correct Answer: B
Rationale: Insulated tools offer a layer of protection but have limitations. They must be
used within their rated voltage, and they do not eliminate the need for other PPE like
rubber gloves.
12. What is the purpose of an equipment grounding conductor?
A. To carry normal operating current.
B. To provide a low-impedance path for fault current to facilitate overcurrent device
operation and reduce shock hazard.
C. To serve as the neutral conductor.
D. To increase the voltage available to loads.
Correct Answer: B
Rationale: The equipment grounding conductor connects non-current-carrying metal
parts to ground. This provides a safe path for fault current to clear a protective device
and limit shock potential.
13. The term "arc flash" refers to:
A. A brief power outage.
B. Extreme heat, intense light, and pressure wave that can cause severe burns and injury.
C. A safe method of disconnecting power.
D. A temporary loss of radio signal.
