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ARIZONA CONTRACTOR LICENSE CR-67 EXAM QUESTIONS
WITH VERIFIED QUESTIONS DETAILED RATIONALES
GRADED A+
ARIZONA CONTRACTOR LICENSE CR-67 EXAM — QUESTIONS WITH RATIONALES
SECTION 1: ELECTRICAL THEORY & FUNDAMENTALS (Questions 1–20)
1. Alternating current (AC) always flows in which manner?
A) One direction only
B) One way, then the other
C) In a continuous circle without direction change
D) Only when resistance is zero
Answer: B
Rationale: AC alternates direction, flowing one way and then the other .
2. The frequency of AC is measured in which unit?
A) Volts
B) Amperes
C) Hertz
D) Ohms
Answer: C
Rationale: Frequency of AC is measured in hertz (Hz) .
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3. What term refers to a voltage that can convey information?
A) Electrical signal
B) Ground fault
C) Line voltage
D) Phase voltage
Answer: A
Rationale: An electrical signal is a voltage that conveys information .
4. What refers to the maximum voltage that can be reached by a signal?
A) Frequency
B) Amplitude
C) Resistance
D) Ampacity
Answer: B
Rationale: Amplitude is the maximum voltage reached by a signal .
5. Electricity may flow only when which condition exists?
A) There is a complete circuit for it to return
B) Voltage exceeds 120 volts
C) Resistance is zero
D) The circuit is grounded
Answer: A
Rationale: Electricity requires a complete circuit for current to flow and return .
6. What is the return path for electrical power to flow back to the service panel?
A) Hot wire
B) Ground wire
C) Neutral wire
D) Phase wire
Answer: C
Rationale: The neutral wire provides the return path for electrical power .
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7. How do watts compare with voltage?
A) Watts measure power; voltage measures potential energy
B) Watts measure potential energy; voltage measures power
C) They measure the same thing
D) Watts measure resistance; voltage measures current
Answer: A
Rationale: Watts are the measure of power, while voltage is the measure of potential energy .
8. You should size conductors no less than what percentage of continuous loads plus what
percentage of non-continuous loads?
A) 100% / 125%
B) 125% / 100%
C) 80% / 100%
D) 100% / 80%
Answer: B
Rationale: Conductors should be sized no less than 125% of continuous loads plus 100% of non-
continuous loads .
9. Conductor sizes are often expressed in which unit?
A) Metric wire gauge
B) American Wire Gauge (AWG)
C) Circular mils per amp
D) Ohm gauge
Answer: B
Rationale: Conductor sizes are expressed in American Wire Gauge (AWG) .
10. What refers to the allowable current-carrying capacity of a conductor?
A) Resistance
B) Voltage
C) Ampacity
D) Frequency
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Answer: C
Rationale: Ampacity is the allowable current-carrying capacity of a conductor .
11. What is the amount of voltage measured between any two line conductors of a balanced
three-phase system called?
A) Phase voltage
B) Line voltage
C) Neutral voltage
D) Ground voltage
Answer: B
Rationale: Line voltage is measured between any two line conductors .
12. What describes the voltage measured across any one component of a balanced three-
phase system?
A) Line voltage
B) Phase voltage
C) Neutral voltage
D) Ground voltage
Answer: B
Rationale: Phase voltage is measured across any one component .
13. A typical work space for working voltage under 600V should have a minimum headroom
of how many meters?
A) 1.5 m
B) 2.0 m
C) 2.5 m
D) 3.0 m
Answer: B
Rationale: Minimum headroom for working space under 600V is 2.0 meters .
14. Typically, how many hot wires run from the utility company into the service panel?
A) 1
ARIZONA CONTRACTOR LICENSE CR-67 EXAM QUESTIONS
WITH VERIFIED QUESTIONS DETAILED RATIONALES
GRADED A+
ARIZONA CONTRACTOR LICENSE CR-67 EXAM — QUESTIONS WITH RATIONALES
SECTION 1: ELECTRICAL THEORY & FUNDAMENTALS (Questions 1–20)
1. Alternating current (AC) always flows in which manner?
A) One direction only
B) One way, then the other
C) In a continuous circle without direction change
D) Only when resistance is zero
Answer: B
Rationale: AC alternates direction, flowing one way and then the other .
2. The frequency of AC is measured in which unit?
A) Volts
B) Amperes
C) Hertz
D) Ohms
Answer: C
Rationale: Frequency of AC is measured in hertz (Hz) .
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3. What term refers to a voltage that can convey information?
A) Electrical signal
B) Ground fault
C) Line voltage
D) Phase voltage
Answer: A
Rationale: An electrical signal is a voltage that conveys information .
4. What refers to the maximum voltage that can be reached by a signal?
A) Frequency
B) Amplitude
C) Resistance
D) Ampacity
Answer: B
Rationale: Amplitude is the maximum voltage reached by a signal .
5. Electricity may flow only when which condition exists?
A) There is a complete circuit for it to return
B) Voltage exceeds 120 volts
C) Resistance is zero
D) The circuit is grounded
Answer: A
Rationale: Electricity requires a complete circuit for current to flow and return .
6. What is the return path for electrical power to flow back to the service panel?
A) Hot wire
B) Ground wire
C) Neutral wire
D) Phase wire
Answer: C
Rationale: The neutral wire provides the return path for electrical power .
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7. How do watts compare with voltage?
A) Watts measure power; voltage measures potential energy
B) Watts measure potential energy; voltage measures power
C) They measure the same thing
D) Watts measure resistance; voltage measures current
Answer: A
Rationale: Watts are the measure of power, while voltage is the measure of potential energy .
8. You should size conductors no less than what percentage of continuous loads plus what
percentage of non-continuous loads?
A) 100% / 125%
B) 125% / 100%
C) 80% / 100%
D) 100% / 80%
Answer: B
Rationale: Conductors should be sized no less than 125% of continuous loads plus 100% of non-
continuous loads .
9. Conductor sizes are often expressed in which unit?
A) Metric wire gauge
B) American Wire Gauge (AWG)
C) Circular mils per amp
D) Ohm gauge
Answer: B
Rationale: Conductor sizes are expressed in American Wire Gauge (AWG) .
10. What refers to the allowable current-carrying capacity of a conductor?
A) Resistance
B) Voltage
C) Ampacity
D) Frequency
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Answer: C
Rationale: Ampacity is the allowable current-carrying capacity of a conductor .
11. What is the amount of voltage measured between any two line conductors of a balanced
three-phase system called?
A) Phase voltage
B) Line voltage
C) Neutral voltage
D) Ground voltage
Answer: B
Rationale: Line voltage is measured between any two line conductors .
12. What describes the voltage measured across any one component of a balanced three-
phase system?
A) Line voltage
B) Phase voltage
C) Neutral voltage
D) Ground voltage
Answer: B
Rationale: Phase voltage is measured across any one component .
13. A typical work space for working voltage under 600V should have a minimum headroom
of how many meters?
A) 1.5 m
B) 2.0 m
C) 2.5 m
D) 3.0 m
Answer: B
Rationale: Minimum headroom for working space under 600V is 2.0 meters .
14. Typically, how many hot wires run from the utility company into the service panel?
A) 1
