Qualification Certificate Construction
Electrician (CCQ) Questions And Correct
Answers (Verified Answers) Plus Rationales
2026 Q&A | Instant Download Pdf
1. What is the primary purpose of grounding in an electrical system?
A. Reduce voltage
B. Prevent overload
C. Provide a safe path for fault current
D. Increase resistance
Answer: C
Grounding provides a low-resistance path for fault current to
reduce shock and fire hazards.
2. Which tool is best used to measure electrical current?
A. Voltmeter
B. Ohmmeter
C. Ammeter
D. Megohmmeter
Answer: C
An ammeter is specifically designed to measure current flow.
3. What color insulation is typically used for grounded (neutral)
conductors?
A. Green
B. Black
C. White
, D. Red
Answer: C
White or gray insulation identifies grounded neutral conductors.
4. Which device protects against ground faults?
A. Circuit breaker
B. Fuse
C. GFCI
D. Transformer
Answer: C
GFCIs disconnect power when leakage current to ground is
detected.
5. What does Ohm’s Law state?
A. Power equals voltage times current
B. Voltage equals current times resistance
C. Resistance equals voltage divided by power
D. Current equals resistance times voltage
Answer: B
Ohm’s Law is V = I × R.
6. What is the function of a circuit breaker?
A. Increase current
B. Store electricity
C. Interrupt overcurrent
D. Convert AC to DC
Answer: C
Circuit breakers open the circuit during overload or short circuit
conditions.
, 7. Which type of current is supplied to most construction sites?
A. Direct current
B. Static current
C. Alternating current
D. Pulsed current
Answer: C
AC is standard for power distribution.
8. What hazard is caused by overloaded conductors?
A. Voltage drop
B. Electric shock only
C. Overheating and fire
D. Reduced frequency
Answer: C
Excess current causes heat buildup leading to fire risk.
9. Which PPE is required when working on energized equipment?
A. Cotton gloves
B. Safety boots only
C. Insulated gloves and face protection
D. Hard hat only
Answer: C
Electrical PPE protects against arc flash and shock.
10. What instrument is used to check insulation resistance?
A. Clamp meter
B. Multimeter
C. Megohmmeter
D. Oscilloscope
Electrician (CCQ) Questions And Correct
Answers (Verified Answers) Plus Rationales
2026 Q&A | Instant Download Pdf
1. What is the primary purpose of grounding in an electrical system?
A. Reduce voltage
B. Prevent overload
C. Provide a safe path for fault current
D. Increase resistance
Answer: C
Grounding provides a low-resistance path for fault current to
reduce shock and fire hazards.
2. Which tool is best used to measure electrical current?
A. Voltmeter
B. Ohmmeter
C. Ammeter
D. Megohmmeter
Answer: C
An ammeter is specifically designed to measure current flow.
3. What color insulation is typically used for grounded (neutral)
conductors?
A. Green
B. Black
C. White
, D. Red
Answer: C
White or gray insulation identifies grounded neutral conductors.
4. Which device protects against ground faults?
A. Circuit breaker
B. Fuse
C. GFCI
D. Transformer
Answer: C
GFCIs disconnect power when leakage current to ground is
detected.
5. What does Ohm’s Law state?
A. Power equals voltage times current
B. Voltage equals current times resistance
C. Resistance equals voltage divided by power
D. Current equals resistance times voltage
Answer: B
Ohm’s Law is V = I × R.
6. What is the function of a circuit breaker?
A. Increase current
B. Store electricity
C. Interrupt overcurrent
D. Convert AC to DC
Answer: C
Circuit breakers open the circuit during overload or short circuit
conditions.
, 7. Which type of current is supplied to most construction sites?
A. Direct current
B. Static current
C. Alternating current
D. Pulsed current
Answer: C
AC is standard for power distribution.
8. What hazard is caused by overloaded conductors?
A. Voltage drop
B. Electric shock only
C. Overheating and fire
D. Reduced frequency
Answer: C
Excess current causes heat buildup leading to fire risk.
9. Which PPE is required when working on energized equipment?
A. Cotton gloves
B. Safety boots only
C. Insulated gloves and face protection
D. Hard hat only
Answer: C
Electrical PPE protects against arc flash and shock.
10. What instrument is used to check insulation resistance?
A. Clamp meter
B. Multimeter
C. Megohmmeter
D. Oscilloscope
