Alberta Electrician Fourth Period AIT Exam
Questions And Correct Answers (Verified
Answers) Plus Rationales 2026 Q&A | Instant
Download Pdf
1. Which of the following is the primary purpose of a ground-fault
circuit interrupter (GFCI)?
A. To prevent overloads on branch circuits
B. To increase voltage to devices
C. To protect people from electric shock
D. To protect equipment from power surges
GFCIs detect ground faults and quickly interrupt the circuit to
prevent electrical shock to humans.
2. In Alberta, what is the maximum allowable voltage drop for
branch circuits supplying general-use receptacles?
A. 1%
B. 2%
C. 3%
D. 5%
Voltage drop should not exceed 5% to ensure appliances operate
efficiently and safely.
3. When sizing conductors for continuous loads, the ampacity must
be based on:
A. 100% of the load
B. 125% of the load
, C. 80% of the load
D. 150% of the load
Continuous loads require a 125% multiplier to prevent overheating
and maintain safety.
4. Which type of conduit is most suitable for outdoor installation
exposed to weather?
A. EMT
B. Rigid PVC
C. FMC
D. ENT
Rigid PVC is resistant to moisture and corrosion, making it ideal for
outdoor use.
5. According to Alberta Electrical Code, what is the minimum cover
required for underground conductors in residential areas?
A. 300 mm
B. 450 mm
C. 600 mm
D. 750 mm
600 mm (2 ft) is the minimum depth to protect underground
wiring from accidental damage.
6. What is the primary function of a surge protector?
A. To increase current
B. To divert excess voltage away from sensitive equipment
C. To prevent circuit overload
D. To reduce energy consumption
Surge protectors limit transient voltage spikes to protect electrical
devices.
, 7. Which device is used to convert AC to DC?
A. Transformer
B. Rectifier
C. Rectifier
D. Inverter
A rectifier converts alternating current (AC) into direct current (DC)
by allowing current to flow in only one direction.
8. When testing insulation resistance of a motor winding, which
instrument is commonly used?
A. Voltmeter
B. Megohmmeter
C. Ammeter
D. Oscilloscope
A megohmmeter applies a high DC voltage to the insulation and
measures resistance to detect breakdown.
9. What is the purpose of bonding in electrical installations?
A. To increase voltage
B. To prevent circuit overloads
C. To ensure all metal parts are at the same electrical potential
D. To reduce power consumption
Bonding reduces the risk of electric shock by connecting metal
parts together and to ground.
10. A 3-phase, 4-wire system has a line voltage of 600 V. What is
the phase voltage?
A. 200 V
B. 347 V
C. 480 V
Questions And Correct Answers (Verified
Answers) Plus Rationales 2026 Q&A | Instant
Download Pdf
1. Which of the following is the primary purpose of a ground-fault
circuit interrupter (GFCI)?
A. To prevent overloads on branch circuits
B. To increase voltage to devices
C. To protect people from electric shock
D. To protect equipment from power surges
GFCIs detect ground faults and quickly interrupt the circuit to
prevent electrical shock to humans.
2. In Alberta, what is the maximum allowable voltage drop for
branch circuits supplying general-use receptacles?
A. 1%
B. 2%
C. 3%
D. 5%
Voltage drop should not exceed 5% to ensure appliances operate
efficiently and safely.
3. When sizing conductors for continuous loads, the ampacity must
be based on:
A. 100% of the load
B. 125% of the load
, C. 80% of the load
D. 150% of the load
Continuous loads require a 125% multiplier to prevent overheating
and maintain safety.
4. Which type of conduit is most suitable for outdoor installation
exposed to weather?
A. EMT
B. Rigid PVC
C. FMC
D. ENT
Rigid PVC is resistant to moisture and corrosion, making it ideal for
outdoor use.
5. According to Alberta Electrical Code, what is the minimum cover
required for underground conductors in residential areas?
A. 300 mm
B. 450 mm
C. 600 mm
D. 750 mm
600 mm (2 ft) is the minimum depth to protect underground
wiring from accidental damage.
6. What is the primary function of a surge protector?
A. To increase current
B. To divert excess voltage away from sensitive equipment
C. To prevent circuit overload
D. To reduce energy consumption
Surge protectors limit transient voltage spikes to protect electrical
devices.
, 7. Which device is used to convert AC to DC?
A. Transformer
B. Rectifier
C. Rectifier
D. Inverter
A rectifier converts alternating current (AC) into direct current (DC)
by allowing current to flow in only one direction.
8. When testing insulation resistance of a motor winding, which
instrument is commonly used?
A. Voltmeter
B. Megohmmeter
C. Ammeter
D. Oscilloscope
A megohmmeter applies a high DC voltage to the insulation and
measures resistance to detect breakdown.
9. What is the purpose of bonding in electrical installations?
A. To increase voltage
B. To prevent circuit overloads
C. To ensure all metal parts are at the same electrical potential
D. To reduce power consumption
Bonding reduces the risk of electric shock by connecting metal
parts together and to ground.
10. A 3-phase, 4-wire system has a line voltage of 600 V. What is
the phase voltage?
A. 200 V
B. 347 V
C. 480 V
