CO ELECTRICAL SIGNS CONTRACTOR EXAM
QUESTIONS AND CORRECT NSWERS (VERIFIED
ANSWERS) Q&A 2027 |INSTANT DOWNLOAD PDF
1. What is the primary purpose of a disconnecting means for
an electric sign?
A. Increase lamp brightness
B. Provide a means to disconnect power for servicing
C. Reduce sign weight
D. Improve the sign's appearance
Correct Answer: B
Rationale: A disconnect allows the sign circuit to be de-
energized safely during maintenance or repair.
2. Which conductor normally carries current back to the
source in a single-phase circuit?
A. Grounding electrode conductor
B. Equipment grounding conductor
C. Neutral conductor
D. Bonding jumper
Correct Answer: C
Rationale: The neutral conductor provides the normal return
path for current in a grounded circuit.
3. What is the main function of an equipment grounding
conductor?
,A. Carry normal load current
B. Provide a low-impedance fault-current path
C. Increase voltage
D. Control lamp color
Correct Answer: B
Rationale: Equipment grounding conductors provide a path for
fault current so protective devices can operate.
4. Which device is commonly used to protect a branch circuit
from overcurrent?
A. Transformer
B. Ballast
C. Circuit breaker
D. Photocell
Correct Answer: C
Rationale: Circuit breakers open the circuit when current
exceeds their rated capacity.
5. What does NEC stand for?
A. National Electrical Code
B. National Equipment Circuit
C. New Electrical Construction
D. National Energy Control
Correct Answer: A
Rationale: NEC is the commonly used abbreviation for the
National Electrical Code.
,6. What is the purpose of bonding metallic sign components?
A. Increase resistance
B. Provide electrical continuity for fault protection
C. Increase illumination
D. Reduce sign dimensions
Correct Answer: B
Rationale: Bonding connects conductive parts so they remain at
substantially the same electrical potential and can carry fault
current.
7. Which tool is commonly used to verify the presence of
voltage?
A. Tape measure
B. Voltage tester
C. Pipe wrench
D. Level
Correct Answer: B
Rationale: A properly rated voltage tester is designed to detect
electrical potential.
8. What does GFCI stand for?
A. Ground-Fault Circuit Interrupter
B. Ground Fixture Current Indicator
C. General Fault Control Installation
D. Grounded Fixture Circuit Interface
Correct Answer: A
Rationale: A GFCI disconnects power when it detects an
, imbalance between current leaving and returning through the
circuit.
9. Why are electrical connections inside sign cabinets
protected from physical damage?
A. To improve lettering
B. To prevent accidental contact and conductor damage
C. To increase advertising value
D. To reduce lamp voltage
Correct Answer: B
Rationale: Electrical components and conductors must be
protected against physical damage and accidental contact.
10. What is the unit used to measure electrical resistance?
A. Volt
B. Ampere
C. Ohm
D. Watt
Correct Answer: C
Rationale: Resistance is measured in ohms.
11. What is the unit used to measure electric current?
A. Ampere
B. Volt
C. Ohm
D. Hertz
Correct Answer: A
Rationale: Electric current is measured in amperes.
QUESTIONS AND CORRECT NSWERS (VERIFIED
ANSWERS) Q&A 2027 |INSTANT DOWNLOAD PDF
1. What is the primary purpose of a disconnecting means for
an electric sign?
A. Increase lamp brightness
B. Provide a means to disconnect power for servicing
C. Reduce sign weight
D. Improve the sign's appearance
Correct Answer: B
Rationale: A disconnect allows the sign circuit to be de-
energized safely during maintenance or repair.
2. Which conductor normally carries current back to the
source in a single-phase circuit?
A. Grounding electrode conductor
B. Equipment grounding conductor
C. Neutral conductor
D. Bonding jumper
Correct Answer: C
Rationale: The neutral conductor provides the normal return
path for current in a grounded circuit.
3. What is the main function of an equipment grounding
conductor?
,A. Carry normal load current
B. Provide a low-impedance fault-current path
C. Increase voltage
D. Control lamp color
Correct Answer: B
Rationale: Equipment grounding conductors provide a path for
fault current so protective devices can operate.
4. Which device is commonly used to protect a branch circuit
from overcurrent?
A. Transformer
B. Ballast
C. Circuit breaker
D. Photocell
Correct Answer: C
Rationale: Circuit breakers open the circuit when current
exceeds their rated capacity.
5. What does NEC stand for?
A. National Electrical Code
B. National Equipment Circuit
C. New Electrical Construction
D. National Energy Control
Correct Answer: A
Rationale: NEC is the commonly used abbreviation for the
National Electrical Code.
,6. What is the purpose of bonding metallic sign components?
A. Increase resistance
B. Provide electrical continuity for fault protection
C. Increase illumination
D. Reduce sign dimensions
Correct Answer: B
Rationale: Bonding connects conductive parts so they remain at
substantially the same electrical potential and can carry fault
current.
7. Which tool is commonly used to verify the presence of
voltage?
A. Tape measure
B. Voltage tester
C. Pipe wrench
D. Level
Correct Answer: B
Rationale: A properly rated voltage tester is designed to detect
electrical potential.
8. What does GFCI stand for?
A. Ground-Fault Circuit Interrupter
B. Ground Fixture Current Indicator
C. General Fault Control Installation
D. Grounded Fixture Circuit Interface
Correct Answer: A
Rationale: A GFCI disconnects power when it detects an
, imbalance between current leaving and returning through the
circuit.
9. Why are electrical connections inside sign cabinets
protected from physical damage?
A. To improve lettering
B. To prevent accidental contact and conductor damage
C. To increase advertising value
D. To reduce lamp voltage
Correct Answer: B
Rationale: Electrical components and conductors must be
protected against physical damage and accidental contact.
10. What is the unit used to measure electrical resistance?
A. Volt
B. Ampere
C. Ohm
D. Watt
Correct Answer: C
Rationale: Resistance is measured in ohms.
11. What is the unit used to measure electric current?
A. Ampere
B. Volt
C. Ohm
D. Hertz
Correct Answer: A
Rationale: Electric current is measured in amperes.
