Alberta Electrician Apprenticeship Certification
(Third Period) Examination COMPLETE
QUESTIONS AND DETAILED SOLUTIONS
LATEST UPDATE THIS YEAR JUST
RELEASED
The Alberta Electrician Third Period Apprenticeship Examination is part of
the four-year electrician apprenticeship program administered through Alberta
Apprenticeship and Industry Training (AIT). Third Period training focuses on
advanced electrical theory, three-phase systems, transformers, motors, motor
controls, power distribution, protection systems, grounding, bonding,
instrumentation, power factor correction, hazardous locations, and Canadian
Electrical Code applications. A passing grade is generally 70% or higher.
Exam Coverage
Three-Phase Power Systems
o Wye and delta connections, voltage/current relationships, power
calculations, phase sequence, and load balancing.
Transformers
o Turns ratio calculations, kVA ratings, efficiency, polarity, three-
phase transformer banks, and transformer protection.
Motors and Generators
o Motor construction, synchronous speed, torque characteristics,
motor selection, troubleshooting, and generator fundamentals.
, Motor Controls
o Magnetic starters, reversing circuits, interlocks, control relays,
overload protection, VFDs, and soft starters.
Power Distribution
o Distribution equipment, switchgear, busways, feeders, services, and
system coordination.
Grounding and Bonding
o System grounding methods, bonding requirements, fault-current
paths, and electrical safety principles.
Overcurrent Protection
o Fuse types, circuit breaker characteristics, coordination, selective
tripping, and equipment protection.
Power Factor Correction
o Capacitor banks, synchronous condensers, reactive power, and
efficiency improvements.
Instrumentation and Metering
o CTs, PTs, metering systems, power measurement, and monitoring
equipment.
CEC Applications
o Conductor sizing, ampacity adjustments, derating, voltage-drop
calculations, and installation requirements.
Electrical Safety
o Lockout/tagout, arc-flash awareness, PPE selection, safe work
procedures, and hazard identification.
1.
,A technician measures 347 V phase-to-neutral in a three-
phase wye system. What line-to-line voltage should be
expected during normal operation?
A. 347 V
B. 480 V
C. 600 V
D. 208 V
Answer: C
Rationale: In a wye system, line voltage equals phase
voltage multiplied by 1.732. Thus 347 × 1.732 ≈ 600 V.
2.
During commissioning of a 60 Hz, four-pole induction
motor, what synchronous speed should be expected before
slip is considered?
A. 900 rpm
B. 1200 rpm
C. 1800 rpm
D. 3600 rpm
Answer: C
Rationale: Synchronous speed = (120 × frequency) ÷ poles
= (120 × 60) ÷ 4 = 1800 rpm.
, 3.
A facility installs capacitor banks primarily to reduce
which undesirable electrical system condition?
A. Voltage drop
B. Poor power factor
C. Ground faults
D. Harmonics only
Answer: B
Rationale: Capacitor banks supply reactive power and
improve power factor, reducing utility penalties and
current demand.
4.
Which motor type typically provides the highest starting
torque for heavy-load starting applications?
A. Shaded-pole motor
B. Split-phase motor
C. Capacitor-start motor
D. Synchronous motor
Answer: C
Rationale: Capacitor-start motors develop high starting
torque because of the phase shift created by the start
capacitor.
(Third Period) Examination COMPLETE
QUESTIONS AND DETAILED SOLUTIONS
LATEST UPDATE THIS YEAR JUST
RELEASED
The Alberta Electrician Third Period Apprenticeship Examination is part of
the four-year electrician apprenticeship program administered through Alberta
Apprenticeship and Industry Training (AIT). Third Period training focuses on
advanced electrical theory, three-phase systems, transformers, motors, motor
controls, power distribution, protection systems, grounding, bonding,
instrumentation, power factor correction, hazardous locations, and Canadian
Electrical Code applications. A passing grade is generally 70% or higher.
Exam Coverage
Three-Phase Power Systems
o Wye and delta connections, voltage/current relationships, power
calculations, phase sequence, and load balancing.
Transformers
o Turns ratio calculations, kVA ratings, efficiency, polarity, three-
phase transformer banks, and transformer protection.
Motors and Generators
o Motor construction, synchronous speed, torque characteristics,
motor selection, troubleshooting, and generator fundamentals.
, Motor Controls
o Magnetic starters, reversing circuits, interlocks, control relays,
overload protection, VFDs, and soft starters.
Power Distribution
o Distribution equipment, switchgear, busways, feeders, services, and
system coordination.
Grounding and Bonding
o System grounding methods, bonding requirements, fault-current
paths, and electrical safety principles.
Overcurrent Protection
o Fuse types, circuit breaker characteristics, coordination, selective
tripping, and equipment protection.
Power Factor Correction
o Capacitor banks, synchronous condensers, reactive power, and
efficiency improvements.
Instrumentation and Metering
o CTs, PTs, metering systems, power measurement, and monitoring
equipment.
CEC Applications
o Conductor sizing, ampacity adjustments, derating, voltage-drop
calculations, and installation requirements.
Electrical Safety
o Lockout/tagout, arc-flash awareness, PPE selection, safe work
procedures, and hazard identification.
1.
,A technician measures 347 V phase-to-neutral in a three-
phase wye system. What line-to-line voltage should be
expected during normal operation?
A. 347 V
B. 480 V
C. 600 V
D. 208 V
Answer: C
Rationale: In a wye system, line voltage equals phase
voltage multiplied by 1.732. Thus 347 × 1.732 ≈ 600 V.
2.
During commissioning of a 60 Hz, four-pole induction
motor, what synchronous speed should be expected before
slip is considered?
A. 900 rpm
B. 1200 rpm
C. 1800 rpm
D. 3600 rpm
Answer: C
Rationale: Synchronous speed = (120 × frequency) ÷ poles
= (120 × 60) ÷ 4 = 1800 rpm.
, 3.
A facility installs capacitor banks primarily to reduce
which undesirable electrical system condition?
A. Voltage drop
B. Poor power factor
C. Ground faults
D. Harmonics only
Answer: B
Rationale: Capacitor banks supply reactive power and
improve power factor, reducing utility penalties and
current demand.
4.
Which motor type typically provides the highest starting
torque for heavy-load starting applications?
A. Shaded-pole motor
B. Split-phase motor
C. Capacitor-start motor
D. Synchronous motor
Answer: C
Rationale: Capacitor-start motors develop high starting
torque because of the phase shift created by the start
capacitor.
