Arizona Contractor License CR-67 Full Exam: Low
Voltage Communication Systems Total Questions: 150
(125 Technical + 25 Arizona ROC Statutes & Rules) WITH
CORRECT ANSWERS WELL VERIFIED 2026!
SECTION 1: ELECTRICAL FUNDAMENTALS (30 Questions)
1. Alternating Current (AC) always flows one way then the other?
A) True
B) False
CORRECT ANSWER : A
Rationale: Alternating current (AC) periodically reverses direction, flowing one way then the other. This
is fundamental to how AC power systems operate in residential and commercial applications. DC (direct
current) flows in only one direction.
2. The frequency of AC is measured in what unit?
A) Volts
B) Amperes
C) Hertz
D) Watts
,CORRECT ANSWER : C
Rationale: The frequency of alternating current is measured in hertz (Hz), which indicates how many
complete cycles occur per second. Standard US power operates at 60 Hz.
3. What refers to a voltage that can convey information?
A) Power signal
B) Electrical signal
C) Frequency modulation
D) Ground reference
CORRECT ANSWER : B
Rationale: An electrical signal refers to a voltage that conveys information. This is essential for
communication in electronic devices and low-voltage systems where signals carry data rather than just
power.
4. What refers to the maximum voltage that can be reached by a signal?
A) Peak voltage
B) Amplitude
C) RMS value
D) Frequency
,CORRECT ANSWER : B
Rationale: Amplitude is the maximum voltage that a signal can reach. It is crucial for understanding
signal strength and quality in communication systems.
5. Electricity may flow only when what condition is met?
A) There is sufficient voltage
B) There is a complete circuit for return
C) The ground is connected
D) The breaker is on
CORRECT ANSWER : B
Rationale: Electricity requires a complete circuit to flow, meaning there must be a return path for
current. Without a complete circuit, no current can flow regardless of voltage present.
6. What is the return path for electrical power to flow back to the service panel?
A) Ground wire
B) Neutral wire
C) Hot wire
, D) Bonding conductor
CORRECT ANSWER : B
Rationale: The neutral wire serves as the return path for electrical power, ensuring safety and
functionality in electrical systems. Current flows out through the hot wire and returns through the
neutral.
7. The live wire is always ungrounded.
A) True
B) False
CORRECT ANSWER : A
Rationale: The live wire is ungrounded and carries electrical power, making it potentially dangerous. It is
commonly referred to as the "hot" wire.
8. A ground electrode conductor originates at the neutral or equipment ground bus of the service panel.
A) True
B) False
CORRECT ANSWER : A
Rationale: The ground electrode conductor connects the neutral or equipment ground bus of the service
panel to the grounding electrode (such as a ground rod). This establishes the connection to earth.
Voltage Communication Systems Total Questions: 150
(125 Technical + 25 Arizona ROC Statutes & Rules) WITH
CORRECT ANSWERS WELL VERIFIED 2026!
SECTION 1: ELECTRICAL FUNDAMENTALS (30 Questions)
1. Alternating Current (AC) always flows one way then the other?
A) True
B) False
CORRECT ANSWER : A
Rationale: Alternating current (AC) periodically reverses direction, flowing one way then the other. This
is fundamental to how AC power systems operate in residential and commercial applications. DC (direct
current) flows in only one direction.
2. The frequency of AC is measured in what unit?
A) Volts
B) Amperes
C) Hertz
D) Watts
,CORRECT ANSWER : C
Rationale: The frequency of alternating current is measured in hertz (Hz), which indicates how many
complete cycles occur per second. Standard US power operates at 60 Hz.
3. What refers to a voltage that can convey information?
A) Power signal
B) Electrical signal
C) Frequency modulation
D) Ground reference
CORRECT ANSWER : B
Rationale: An electrical signal refers to a voltage that conveys information. This is essential for
communication in electronic devices and low-voltage systems where signals carry data rather than just
power.
4. What refers to the maximum voltage that can be reached by a signal?
A) Peak voltage
B) Amplitude
C) RMS value
D) Frequency
,CORRECT ANSWER : B
Rationale: Amplitude is the maximum voltage that a signal can reach. It is crucial for understanding
signal strength and quality in communication systems.
5. Electricity may flow only when what condition is met?
A) There is sufficient voltage
B) There is a complete circuit for return
C) The ground is connected
D) The breaker is on
CORRECT ANSWER : B
Rationale: Electricity requires a complete circuit to flow, meaning there must be a return path for
current. Without a complete circuit, no current can flow regardless of voltage present.
6. What is the return path for electrical power to flow back to the service panel?
A) Ground wire
B) Neutral wire
C) Hot wire
, D) Bonding conductor
CORRECT ANSWER : B
Rationale: The neutral wire serves as the return path for electrical power, ensuring safety and
functionality in electrical systems. Current flows out through the hot wire and returns through the
neutral.
7. The live wire is always ungrounded.
A) True
B) False
CORRECT ANSWER : A
Rationale: The live wire is ungrounded and carries electrical power, making it potentially dangerous. It is
commonly referred to as the "hot" wire.
8. A ground electrode conductor originates at the neutral or equipment ground bus of the service panel.
A) True
B) False
CORRECT ANSWER : A
Rationale: The ground electrode conductor connects the neutral or equipment ground bus of the service
panel to the grounding electrode (such as a ground rod). This establishes the connection to earth.
