ALBERTA ELECTRICIAN APPRENTICESHIP
Certification Exam (Second Period) Practice
(Questions and Correct Answers (Verified
Answers) Plus Rationales 2026 Top Rated
Q1. Q96. Megger testing is performed to check:
A. Power factor
B. Insulation resistance
C. Rated voltage
D. Transformer polarity
Rationale>> Meggers apply high DC voltage to test insulation.
Q2. A safety interlock prevents:
A. Ground faults
B. Equipment operation under unsafe conditions
C. Neutral failure
D. Overvoltage
Rationale>> Interlocks disable equipment when guards or doors are open.
,2
Q3. A three-pole breaker protects:
A. 1-phase loads
B. DC loads
C. 3-phase loads
D. Grounding systems
Rationale>> Three-pole breakers protect three-phase circuits simultaneously.
4. A transformer’s turns ratio affects:
A. Frequency
B. Voltage transformation
C. Resistance only
D. Motor torque
Rationale>> Voltage ratio = turns ratio.
Q5. What device is used to convert AC to DC?
A. Transformer
B. Rectifier
C. Inverter
D. Autotransformer
Rationale>> Rectifiers use diodes to convert AC into DC.
Q6. What is the maximum disconnect height above the floor?
A. 1.8 m
B. 1.5 m
C. 2.0 m
D. 2.2 m
Rationale>> Maximum permissible height for disconnect operation is 2.0 m.
Q7. What is the trip characteristic of a Class 10 overload?
, 3
A. Trips in 2 sec
B. Trips in 20 sec
C. Trips within 10 sec
D. Delayed indefinite
Rationale>> Class 10 overloads must trip within 10 seconds at locked-rotor
current.
Q8. Which connection gives the highest starting torque for a 3-phase
motor?
A. Part winding
B. Soft start
C. Wye start
D. Delta start
Rationale>> Delta provides full-line voltage, producing highest starting
torque.
Q9. What does a VFD primarily control?
A. Torque
B. Current
C. Voltage
D. Frequency
Rationale>> VFDs vary motor speed by changing frequency.
Q10. Which meter measures insulation resistance?
A. Multimeter
B. Ohmmeter
C. Megger
D. Clamp meter
ationale>> A megger produces high voltage to measure insulation
resistance.
Certification Exam (Second Period) Practice
(Questions and Correct Answers (Verified
Answers) Plus Rationales 2026 Top Rated
Q1. Q96. Megger testing is performed to check:
A. Power factor
B. Insulation resistance
C. Rated voltage
D. Transformer polarity
Rationale>> Meggers apply high DC voltage to test insulation.
Q2. A safety interlock prevents:
A. Ground faults
B. Equipment operation under unsafe conditions
C. Neutral failure
D. Overvoltage
Rationale>> Interlocks disable equipment when guards or doors are open.
,2
Q3. A three-pole breaker protects:
A. 1-phase loads
B. DC loads
C. 3-phase loads
D. Grounding systems
Rationale>> Three-pole breakers protect three-phase circuits simultaneously.
4. A transformer’s turns ratio affects:
A. Frequency
B. Voltage transformation
C. Resistance only
D. Motor torque
Rationale>> Voltage ratio = turns ratio.
Q5. What device is used to convert AC to DC?
A. Transformer
B. Rectifier
C. Inverter
D. Autotransformer
Rationale>> Rectifiers use diodes to convert AC into DC.
Q6. What is the maximum disconnect height above the floor?
A. 1.8 m
B. 1.5 m
C. 2.0 m
D. 2.2 m
Rationale>> Maximum permissible height for disconnect operation is 2.0 m.
Q7. What is the trip characteristic of a Class 10 overload?
, 3
A. Trips in 2 sec
B. Trips in 20 sec
C. Trips within 10 sec
D. Delayed indefinite
Rationale>> Class 10 overloads must trip within 10 seconds at locked-rotor
current.
Q8. Which connection gives the highest starting torque for a 3-phase
motor?
A. Part winding
B. Soft start
C. Wye start
D. Delta start
Rationale>> Delta provides full-line voltage, producing highest starting
torque.
Q9. What does a VFD primarily control?
A. Torque
B. Current
C. Voltage
D. Frequency
Rationale>> VFDs vary motor speed by changing frequency.
Q10. Which meter measures insulation resistance?
A. Multimeter
B. Ohmmeter
C. Megger
D. Clamp meter
ationale>> A megger produces high voltage to measure insulation
resistance.
