Alberta Heavy Equipment Technician Third Period AIT Exam QUESTIONS AND
CORRECT ANSWERS WITH RATIONALES
Exam coverage
• advanced diesel systems
• hydraulics and pneumatics
• powertrain diagnosis
• electronic controls
• aftertreatment systems
• electrical diagnostics
• steering and braking
• component repair
• preventive maintenance
• safety and documentation
,1. A technician is evaluating a condition; which response is most appropriate because
Electronic engine controls rely on sensors, controllers, actuators, wiring, and
calibrated inputs to manage engine operation.. Which answer best applies to the
underlying heavy equipment technician period 3 concept in this situation?
A. Powertrain diagnosis should use operating symptoms and measurements to isolate the
failed component or system..
B. Aftertreatment systems require correct operating conditions and monitoring of
emissions-related components..
C. Hydraulic troubleshooting should distinguish pressure, flow, mechanical, and
control-related faults..
D. Electronic engine controls rely on sensors, controllers, actuators, wiring, and calibrated
inputs to manage engine operation..
Correct answer: D
Rationale: The correct choice directly states the governing principle: Electronic engine controls
rely on sensors, controllers, actuators, wiring, and calibrated inputs to manage engine
operation.. The alternatives address related topics but do not directly answer the issue being
tested.
2. Which choice correctly identifies the main reason that Hydraulic troubleshooting
should distinguish pressure, flow, mechanical, and control-related faults.. Which
answer best applies to the underlying heavy equipment technician period 3 concept in
this situation?
,A. Electrical diagnostics should begin with safe testing and verification of power, ground,
continuity, and signals..
B. Aftertreatment systems require correct operating conditions and monitoring of
emissions-related components..
C. Hydraulic troubleshooting should distinguish pressure, flow, mechanical, and
control-related faults..
D. Powertrain diagnosis should use operating symptoms and measurements to isolate the
failed component or system..
Correct answer: C
Rationale: The correct choice directly states the governing principle: Hydraulic troubleshooting
should distinguish pressure, flow, mechanical, and control-related faults.. The alternatives
address related topics but do not directly answer the issue being tested.
3. When reviewing this equipment, which statement best applies because Powertrain
diagnosis should use operating symptoms and measurements to isolate the failed
component or system.. Which answer best applies to the underlying heavy equipment
technician period 3 concept in this situation?
A. Component repair should follow service limits, cleanliness requirements, and correct
assembly procedures..
B. Electrical diagnostics should begin with safe testing and verification of power, ground,
continuity, and signals..
, C. Powertrain diagnosis should use operating symptoms and measurements to isolate the
failed component or system..
D. Aftertreatment systems require correct operating conditions and monitoring of
emissions-related components..
Correct answer: C
Rationale: The correct choice directly states the governing principle: Powertrain diagnosis
should use operating symptoms and measurements to isolate the failed component or
system.. The alternatives address related topics but do not directly answer the issue being
tested.
4. A supervisor asks which practice should guide the work when Aftertreatment
systems require correct operating conditions and monitoring of emissions-related
components.. Which answer best applies to the underlying heavy equipment technician
period 3 concept in this situation?
A. Aftertreatment systems require correct operating conditions and monitoring of
emissions-related components..
B. Electrical diagnostics should begin with safe testing and verification of power, ground,
continuity, and signals..
C. Preventive maintenance includes fluid condition, filtration, inspection, lubrication, and
scheduled replacement tasks..
D. Component repair should follow service limits, cleanliness requirements, and correct
assembly procedures..
CORRECT ANSWERS WITH RATIONALES
Exam coverage
• advanced diesel systems
• hydraulics and pneumatics
• powertrain diagnosis
• electronic controls
• aftertreatment systems
• electrical diagnostics
• steering and braking
• component repair
• preventive maintenance
• safety and documentation
,1. A technician is evaluating a condition; which response is most appropriate because
Electronic engine controls rely on sensors, controllers, actuators, wiring, and
calibrated inputs to manage engine operation.. Which answer best applies to the
underlying heavy equipment technician period 3 concept in this situation?
A. Powertrain diagnosis should use operating symptoms and measurements to isolate the
failed component or system..
B. Aftertreatment systems require correct operating conditions and monitoring of
emissions-related components..
C. Hydraulic troubleshooting should distinguish pressure, flow, mechanical, and
control-related faults..
D. Electronic engine controls rely on sensors, controllers, actuators, wiring, and calibrated
inputs to manage engine operation..
Correct answer: D
Rationale: The correct choice directly states the governing principle: Electronic engine controls
rely on sensors, controllers, actuators, wiring, and calibrated inputs to manage engine
operation.. The alternatives address related topics but do not directly answer the issue being
tested.
2. Which choice correctly identifies the main reason that Hydraulic troubleshooting
should distinguish pressure, flow, mechanical, and control-related faults.. Which
answer best applies to the underlying heavy equipment technician period 3 concept in
this situation?
,A. Electrical diagnostics should begin with safe testing and verification of power, ground,
continuity, and signals..
B. Aftertreatment systems require correct operating conditions and monitoring of
emissions-related components..
C. Hydraulic troubleshooting should distinguish pressure, flow, mechanical, and
control-related faults..
D. Powertrain diagnosis should use operating symptoms and measurements to isolate the
failed component or system..
Correct answer: C
Rationale: The correct choice directly states the governing principle: Hydraulic troubleshooting
should distinguish pressure, flow, mechanical, and control-related faults.. The alternatives
address related topics but do not directly answer the issue being tested.
3. When reviewing this equipment, which statement best applies because Powertrain
diagnosis should use operating symptoms and measurements to isolate the failed
component or system.. Which answer best applies to the underlying heavy equipment
technician period 3 concept in this situation?
A. Component repair should follow service limits, cleanliness requirements, and correct
assembly procedures..
B. Electrical diagnostics should begin with safe testing and verification of power, ground,
continuity, and signals..
, C. Powertrain diagnosis should use operating symptoms and measurements to isolate the
failed component or system..
D. Aftertreatment systems require correct operating conditions and monitoring of
emissions-related components..
Correct answer: C
Rationale: The correct choice directly states the governing principle: Powertrain diagnosis
should use operating symptoms and measurements to isolate the failed component or
system.. The alternatives address related topics but do not directly answer the issue being
tested.
4. A supervisor asks which practice should guide the work when Aftertreatment
systems require correct operating conditions and monitoring of emissions-related
components.. Which answer best applies to the underlying heavy equipment technician
period 3 concept in this situation?
A. Aftertreatment systems require correct operating conditions and monitoring of
emissions-related components..
B. Electrical diagnostics should begin with safe testing and verification of power, ground,
continuity, and signals..
C. Preventive maintenance includes fluid condition, filtration, inspection, lubrication, and
scheduled replacement tasks..
D. Component repair should follow service limits, cleanliness requirements, and correct
assembly procedures..
