Oklahoma Skilled Trades & Construction
Questions And Correct Answers
(Verified Answers) Plus Rationales 2026
Q&A Instant Download Pdf
1. Which Oklahoma agency regulates the state's plumbing, electrical,
mechanical, and roofing trades?
A. Oklahoma Department of Labor
B. Oklahoma Construction Industries Board
C. Oklahoma Corporation Commission
D. Oklahoma State Fire Marshal
Answer: Oklahoma Construction Industries Board
Rationale: The CIB is the state agency responsible for licensing and regulating
several skilled construction trades to protect life, property, health, and safety.
2. Which statement best describes Oklahoma's statewide general-contractor
licensing requirement?
A. Every general contractor must hold a CIB license
B. Only residential general contractors need a CIB license
C. General contractors are not currently required to have a statewide CIB license
D. General contractors are licensed exclusively by the Department of Labor
Answer: General contractors are not currently required to have a statewide CIB
license
,Rationale: Oklahoma CIB states that general contractors are not currently
required to have a state license, although trade-specific licensing and local
requirements may still apply.
3. Which trade is regulated by the Oklahoma CIB?
A. Electrical
B. Automobile repair
C. Real estate brokerage
D. Commercial trucking
Answer: Electrical
Rationale: Electrical work is one of the skilled trades specifically regulated by
the CIB.
4. What is the primary purpose of construction licensing?
A. To increase material prices
B. To restrict all construction activity
C. To protect public health, safety, and property
D. To eliminate competition
Answer: To protect public health, safety, and property
Rationale: Licensing establishes competency and regulatory oversight intended
to protect the public.
5. What is the primary purpose of a circuit breaker?
A. Increase voltage
B. Protect a circuit from excessive current
C. Store electrical energy
D. Reduce wire size
Answer: Protect a circuit from excessive current
,Rationale: A circuit breaker opens the circuit when current exceeds its permitted
level, helping prevent conductor overheating and fire.
6. Which electrical conductor normally carries current back to the source
under normal operating conditions?
A. Equipment grounding conductor
B. Bonding jumper
C. Grounded conductor
D. Ground rod
Answer: Grounded conductor
Rationale: The grounded conductor, commonly called the neutral in many
systems, normally carries return current to the source.
7. What is the purpose of equipment grounding?
A. Increase circuit voltage
B. Provide a low-impedance fault-current path
C. Reduce conductor ampacity
D. Increase resistance
Answer: Provide a low-impedance fault-current path
Rationale: Effective grounding and bonding help fault current travel back to the
source so protective devices can operate quickly.
8. Which device is designed to provide additional protection against electric
shock from ground-fault current?
A. GFCI
B. Transformer
C. Capacitor
D. Disconnect switch
Answer: GFCI
, Rationale: A ground-fault circuit interrupter monitors current imbalance and
quickly interrupts a circuit when a ground-fault condition is detected.
9. What should be done before servicing electrical equipment?
A. Increase the circuit voltage
B. De-energize and verify absence of voltage when required
C. Remove the grounding conductor
D. Replace the breaker with a larger one
Answer: De-energize and verify absence of voltage when required
Rationale: Proper electrical safety begins with controlling hazardous energy and
confirming that the equipment is actually de-energized.
10.What does electrical resistance oppose?
A. Current flow
B. Wire insulation
C. Grounding
D. Conduit installation
Answer: Current flow
Rationale: Resistance is the opposition to the flow of electric current.
11.Which formula represents Ohm's law?
A. P = I/R
B. V = IR
C. R = VI
D. I = VR
Answer: V = IR
Rationale: Ohm's law states that voltage equals current multiplied by
resistance.
Questions And Correct Answers
(Verified Answers) Plus Rationales 2026
Q&A Instant Download Pdf
1. Which Oklahoma agency regulates the state's plumbing, electrical,
mechanical, and roofing trades?
A. Oklahoma Department of Labor
B. Oklahoma Construction Industries Board
C. Oklahoma Corporation Commission
D. Oklahoma State Fire Marshal
Answer: Oklahoma Construction Industries Board
Rationale: The CIB is the state agency responsible for licensing and regulating
several skilled construction trades to protect life, property, health, and safety.
2. Which statement best describes Oklahoma's statewide general-contractor
licensing requirement?
A. Every general contractor must hold a CIB license
B. Only residential general contractors need a CIB license
C. General contractors are not currently required to have a statewide CIB license
D. General contractors are licensed exclusively by the Department of Labor
Answer: General contractors are not currently required to have a statewide CIB
license
,Rationale: Oklahoma CIB states that general contractors are not currently
required to have a state license, although trade-specific licensing and local
requirements may still apply.
3. Which trade is regulated by the Oklahoma CIB?
A. Electrical
B. Automobile repair
C. Real estate brokerage
D. Commercial trucking
Answer: Electrical
Rationale: Electrical work is one of the skilled trades specifically regulated by
the CIB.
4. What is the primary purpose of construction licensing?
A. To increase material prices
B. To restrict all construction activity
C. To protect public health, safety, and property
D. To eliminate competition
Answer: To protect public health, safety, and property
Rationale: Licensing establishes competency and regulatory oversight intended
to protect the public.
5. What is the primary purpose of a circuit breaker?
A. Increase voltage
B. Protect a circuit from excessive current
C. Store electrical energy
D. Reduce wire size
Answer: Protect a circuit from excessive current
,Rationale: A circuit breaker opens the circuit when current exceeds its permitted
level, helping prevent conductor overheating and fire.
6. Which electrical conductor normally carries current back to the source
under normal operating conditions?
A. Equipment grounding conductor
B. Bonding jumper
C. Grounded conductor
D. Ground rod
Answer: Grounded conductor
Rationale: The grounded conductor, commonly called the neutral in many
systems, normally carries return current to the source.
7. What is the purpose of equipment grounding?
A. Increase circuit voltage
B. Provide a low-impedance fault-current path
C. Reduce conductor ampacity
D. Increase resistance
Answer: Provide a low-impedance fault-current path
Rationale: Effective grounding and bonding help fault current travel back to the
source so protective devices can operate quickly.
8. Which device is designed to provide additional protection against electric
shock from ground-fault current?
A. GFCI
B. Transformer
C. Capacitor
D. Disconnect switch
Answer: GFCI
, Rationale: A ground-fault circuit interrupter monitors current imbalance and
quickly interrupts a circuit when a ground-fault condition is detected.
9. What should be done before servicing electrical equipment?
A. Increase the circuit voltage
B. De-energize and verify absence of voltage when required
C. Remove the grounding conductor
D. Replace the breaker with a larger one
Answer: De-energize and verify absence of voltage when required
Rationale: Proper electrical safety begins with controlling hazardous energy and
confirming that the equipment is actually de-energized.
10.What does electrical resistance oppose?
A. Current flow
B. Wire insulation
C. Grounding
D. Conduit installation
Answer: Current flow
Rationale: Resistance is the opposition to the flow of electric current.
11.Which formula represents Ohm's law?
A. P = I/R
B. V = IR
C. R = VI
D. I = VR
Answer: V = IR
Rationale: Ohm's law states that voltage equals current multiplied by
resistance.
