Alberta Electrician Fourth Period AIT Exam QUESTIONS AND CORRECT ANSWERS WITH
RATIONALES
Exam Coverage
• Period 4 exam structure and scoring
• Codes and standards
• Canadian Electrical Code use
• Electrical theory and circuit fundamentals
• Electronics
• Electrical systems
• Motors and controls
• Transformers and three-phase systems
• Grounding, bonding, and protection
• Testing, calculations, and installation practices
1. During a competency assessment involving the topic, For exam purposes, which statement
accurately characterizes a disconnecting means allows equipment to be isolated from its source?
A) A disconnecting means allows equipment to be isolated from its source.
B) It applies only when the equipment is completely disconnected from all energy sources.
C) It is primarily a documentation preference and does not affect the technical result.
D) It is a procedure used only after the task has already been completed and inspected.
,Correct Answer: A
Rationale: Correct application requires recognizing that Isolation is essential for servicing and
emergency control where required by the code. The explanation therefore matches the core
knowledge being assessed.
2. When comparing several technically plausible choices, When applying the underlying principle,
which answer best explains a transformer operates through electromagnetic induction?
A) It applies only when the equipment is completely disconnected from all energy sources.
B) A transformer operates through electromagnetic induction.
C) It is primarily a documentation preference and does not affect the technical result.
D) It is a procedure used only after the task has already been completed and inspected.
Correct Answer: B
Rationale: A worker or candidate should understand that Changing magnetic flux produced by
alternating current induces voltage in another winding. Applying that principle prevents the
common misunderstanding represented by the alternatives.
3. When an experienced worker explains the principle to a trainee, In a field situation, which
statement would correctly apply to Ohm’s law relates voltage, current, and resistance?
A) It applies only when the equipment is completely disconnected from all energy sources.
B) It is primarily a documentation preference and does not affect the technical result.
C) Ohm’s law relates voltage, current, and resistance.
D) It is a procedure used only after the task has already been completed and inspected.
,Correct Answer: C
Rationale: This choice is supported by the governing concept that V = IR provides the basic
relationship used for circuit calculations. The other choices do not accurately state that
relationship.
4. During a competency assessment involving the topic, For exam purposes, which statement
accurately characterizes a fuse interrupts current when its fusible element melts?
A) It applies only when the equipment is completely disconnected from all energy sources.
B) It is primarily a documentation preference and does not affect the technical result.
C) It is a procedure used only after the task has already been completed and inspected.
D) A fuse interrupts current when its fusible element melts.
Correct Answer: D
Rationale: Correct application requires recognizing that Excessive current heats the element until
it opens the circuit. The explanation therefore matches the core knowledge being assessed.
5. During a routine inspection or problem-solving situation, Which choice should an examinee
select when asked to identify the correct principle concerning a transformer operates through
electromagnetic induction?
A) A transformer operates through electromagnetic induction.
B) It applies only when the equipment is completely disconnected from all energy sources.
C) It is primarily a documentation preference and does not affect the technical result.
D) It is a procedure used only after the task has already been completed and inspected.
, Correct Answer: A
Rationale: The concept is tested through the relationship described: Changing magnetic flux
produced by alternating current induces voltage in another winding. Therefore, the selected
statement best reflects correct practice.
6. During a competency assessment involving the topic, For exam purposes, which statement
accurately characterizes a motor converts electrical energy into mechanical energy?
A) It applies only when the equipment is completely disconnected from all energy sources.
B) A motor converts electrical energy into mechanical energy.
C) It is primarily a documentation preference and does not affect the technical result.
D) It is a procedure used only after the task has already been completed and inspected.
Correct Answer: B
Rationale: Correct application requires recognizing that Motors use electromagnetic forces to
produce rotational mechanical output. The explanation therefore matches the core knowledge
being assessed.
7. When an experienced worker explains the principle to a trainee, In a field situation, which
statement would correctly apply to electrical theory, circuit fundamentals, and electronics account
for 22 points?
A) It applies only when the equipment is completely disconnected from all energy sources.
B) It is primarily a documentation preference and does not affect the technical result.
C) Electrical theory, circuit fundamentals, and electronics account for 22 points.
RATIONALES
Exam Coverage
• Period 4 exam structure and scoring
• Codes and standards
• Canadian Electrical Code use
• Electrical theory and circuit fundamentals
• Electronics
• Electrical systems
• Motors and controls
• Transformers and three-phase systems
• Grounding, bonding, and protection
• Testing, calculations, and installation practices
1. During a competency assessment involving the topic, For exam purposes, which statement
accurately characterizes a disconnecting means allows equipment to be isolated from its source?
A) A disconnecting means allows equipment to be isolated from its source.
B) It applies only when the equipment is completely disconnected from all energy sources.
C) It is primarily a documentation preference and does not affect the technical result.
D) It is a procedure used only after the task has already been completed and inspected.
,Correct Answer: A
Rationale: Correct application requires recognizing that Isolation is essential for servicing and
emergency control where required by the code. The explanation therefore matches the core
knowledge being assessed.
2. When comparing several technically plausible choices, When applying the underlying principle,
which answer best explains a transformer operates through electromagnetic induction?
A) It applies only when the equipment is completely disconnected from all energy sources.
B) A transformer operates through electromagnetic induction.
C) It is primarily a documentation preference and does not affect the technical result.
D) It is a procedure used only after the task has already been completed and inspected.
Correct Answer: B
Rationale: A worker or candidate should understand that Changing magnetic flux produced by
alternating current induces voltage in another winding. Applying that principle prevents the
common misunderstanding represented by the alternatives.
3. When an experienced worker explains the principle to a trainee, In a field situation, which
statement would correctly apply to Ohm’s law relates voltage, current, and resistance?
A) It applies only when the equipment is completely disconnected from all energy sources.
B) It is primarily a documentation preference and does not affect the technical result.
C) Ohm’s law relates voltage, current, and resistance.
D) It is a procedure used only after the task has already been completed and inspected.
,Correct Answer: C
Rationale: This choice is supported by the governing concept that V = IR provides the basic
relationship used for circuit calculations. The other choices do not accurately state that
relationship.
4. During a competency assessment involving the topic, For exam purposes, which statement
accurately characterizes a fuse interrupts current when its fusible element melts?
A) It applies only when the equipment is completely disconnected from all energy sources.
B) It is primarily a documentation preference and does not affect the technical result.
C) It is a procedure used only after the task has already been completed and inspected.
D) A fuse interrupts current when its fusible element melts.
Correct Answer: D
Rationale: Correct application requires recognizing that Excessive current heats the element until
it opens the circuit. The explanation therefore matches the core knowledge being assessed.
5. During a routine inspection or problem-solving situation, Which choice should an examinee
select when asked to identify the correct principle concerning a transformer operates through
electromagnetic induction?
A) A transformer operates through electromagnetic induction.
B) It applies only when the equipment is completely disconnected from all energy sources.
C) It is primarily a documentation preference and does not affect the technical result.
D) It is a procedure used only after the task has already been completed and inspected.
, Correct Answer: A
Rationale: The concept is tested through the relationship described: Changing magnetic flux
produced by alternating current induces voltage in another winding. Therefore, the selected
statement best reflects correct practice.
6. During a competency assessment involving the topic, For exam purposes, which statement
accurately characterizes a motor converts electrical energy into mechanical energy?
A) It applies only when the equipment is completely disconnected from all energy sources.
B) A motor converts electrical energy into mechanical energy.
C) It is primarily a documentation preference and does not affect the technical result.
D) It is a procedure used only after the task has already been completed and inspected.
Correct Answer: B
Rationale: Correct application requires recognizing that Motors use electromagnetic forces to
produce rotational mechanical output. The explanation therefore matches the core knowledge
being assessed.
7. When an experienced worker explains the principle to a trainee, In a field situation, which
statement would correctly apply to electrical theory, circuit fundamentals, and electronics account
for 22 points?
A) It applies only when the equipment is completely disconnected from all energy sources.
B) It is primarily a documentation preference and does not affect the technical result.
C) Electrical theory, circuit fundamentals, and electronics account for 22 points.
