Power Line Technician (Lineman) Practice
Exam Questions With Correct Answers
(Verified Answers) Plus Rationales 2026
Q&A | Instant Download Pdf
1. What is the primary purpose of a distribution transformer?
A. Increase transmission voltage
B. Reduce voltage for consumer use
C. Store electrical energy
D. Measure current flow
Rationale: Distribution transformers step down high voltage to
safer levels for residential and commercial use.
2. Which tool is commonly used to install and remove hot line
clamps?
A. Pipe wrench
B. Hot stick
C. Voltage tester
D. Wire stripper
Rationale: Hot sticks allow linemen to safely work on energized
lines from a distance.
3. What does PPE stand for in electrical work?
A. Personal Power Equipment
, B. Personal Protective Equipment
C. Power Protection Engineering
D. Primary Power Equipment
Rationale: PPE refers to safety gear worn to reduce risk of injury.
4. What is the standard frequency of electrical power in North
America?
A. 60 Hz
B. 60 Hz
C. 50 Hz
D. 120 Hz
Rationale: North America uses 60 Hz as standard system
frequency.
5. Which material is most commonly used for overhead power lines?
A. Copper
B. Aluminum
C. Steel
D. Iron
Rationale: Aluminum is lightweight, cost-effective, and has good
conductivity.
6. What is the function of a circuit breaker?
A. Increase voltage
B. Interrupt fault current
C. Store energy
, D. Convert AC to DC
Rationale: Circuit breakers protect systems by breaking circuits
during faults.
7. What is the purpose of grounding in electrical systems?
A. Increase voltage stability
B. Protect against electric shock
C. Store electricity
D. Increase resistance
Rationale: Grounding provides a safe path for fault current.
8. Which unit measures electrical resistance?
A. Volt
B. Ohm
C. Ampere
D. Watt
Rationale: Resistance is measured in ohms (Ω).
9. What is the function of a fuse?
A. Increase current
B. Protect circuit by melting under excess current
C. Store energy
D. Amplify voltage
Rationale: A fuse breaks the circuit when current exceeds safe
levels.
Exam Questions With Correct Answers
(Verified Answers) Plus Rationales 2026
Q&A | Instant Download Pdf
1. What is the primary purpose of a distribution transformer?
A. Increase transmission voltage
B. Reduce voltage for consumer use
C. Store electrical energy
D. Measure current flow
Rationale: Distribution transformers step down high voltage to
safer levels for residential and commercial use.
2. Which tool is commonly used to install and remove hot line
clamps?
A. Pipe wrench
B. Hot stick
C. Voltage tester
D. Wire stripper
Rationale: Hot sticks allow linemen to safely work on energized
lines from a distance.
3. What does PPE stand for in electrical work?
A. Personal Power Equipment
, B. Personal Protective Equipment
C. Power Protection Engineering
D. Primary Power Equipment
Rationale: PPE refers to safety gear worn to reduce risk of injury.
4. What is the standard frequency of electrical power in North
America?
A. 60 Hz
B. 60 Hz
C. 50 Hz
D. 120 Hz
Rationale: North America uses 60 Hz as standard system
frequency.
5. Which material is most commonly used for overhead power lines?
A. Copper
B. Aluminum
C. Steel
D. Iron
Rationale: Aluminum is lightweight, cost-effective, and has good
conductivity.
6. What is the function of a circuit breaker?
A. Increase voltage
B. Interrupt fault current
C. Store energy
, D. Convert AC to DC
Rationale: Circuit breakers protect systems by breaking circuits
during faults.
7. What is the purpose of grounding in electrical systems?
A. Increase voltage stability
B. Protect against electric shock
C. Store electricity
D. Increase resistance
Rationale: Grounding provides a safe path for fault current.
8. Which unit measures electrical resistance?
A. Volt
B. Ohm
C. Ampere
D. Watt
Rationale: Resistance is measured in ohms (Ω).
9. What is the function of a fuse?
A. Increase current
B. Protect circuit by melting under excess current
C. Store energy
D. Amplify voltage
Rationale: A fuse breaks the circuit when current exceeds safe
levels.
