AMT 1022 Advanced Technologies 2026/2027 | Predictive
Maintenance & Troubleshooting Study Guide, Exam
Review & Practice Questions | AMTEC Advanced
Technologies in Predictive Maintenance, Machine
Vibration Analysis, Vibration Measurement & Signature
Analysis, Electrical Testing & Motor Diagnostics, Infrared
Thermography, Ultrasonic Analysis, Predictive
Maintenance Techniques, Equipment History, Preventive
Maintenance, CMMS, Troubleshooting, Root-Cause
Analysis, Safety, PPE & Detailed Rationales
Question 1: In the context of predictive maintenance, what is the
primary purpose of condition monitoring?
A. To schedule maintenance tasks based on calendar intervals
B. To detect early signs of equipment degradation during operation
C. To replace all components before they fail
D. To reduce the initial cost of new equipment procurement
CORRECT ANSWER: B. To detect early signs of equipment
degradation during operation
Rationale: Condition monitoring is a core predictive maintenance technique
that involves measuring physical parameters (vibration, temperature, oil
debris, etc.) to identify developing faults while the machine is running,
enabling maintenance to be planned before functional failure occurs.
Question 2: Which maintenance strategy is characterized by
performing maintenance only after a functional failure has
occurred?
A. Preventive maintenance
B. Predictive maintenance
C. Reactive maintenance
D. Proactive maintenance
CORRECT ANSWER: C. Reactive maintenance
Rationale: Reactive maintenance, also called run-to-failure, involves no
action until the equipment actually breaks down. It is appropriate only for
non-critical, inexpensive items where the cost of failure is low.
Question 3: Vibration analysis is most effective for detecting which
of the following machine faults?
,A. Corrosion of a static support frame
B. Misalignment and bearing degradation
C. Electrical resistance change in a cable
D. Lubricant viscosity variation
CORRECT ANSWER: B. Misalignment and bearing degradation
Rationale: Vibration signatures reveal dynamic mechanical problems such
as imbalance, misalignment, looseness, and rolling-element bearing defects
because these faults generate characteristic frequency components.
Question 4: In thermography, an abnormally hot electrical
connection typically indicates:
A. Excessive insulation resistance
B. High contact resistance or loose connection
C. Correct torque on the terminal
D. Low ambient temperature
CORRECT ANSWER: B. High contact resistance or loose connection
Rationale: A loose or corroded electrical joint increases resistance, causing
localized I²R heating that appears as a hot spot on an infrared image,
signaling a potential fire or failure risk.
Question 5: Which of the following is an appropriate unit for
expressing overall vibration velocity?
A. Millimeters per second (mm/s)
B. Micrometres (µm)
C. Pascals (Pa)
D. Siemens per metre (S/m)
CORRECT ANSWER: A. Millimeters per second (mm/s)
Rationale: Velocity in mm/s is a standard broadband measure of vibration
severity and correlates well with fatigue damage in the mid-frequency
range (approximately 10–1000 Hz).
Question 6: What does the term “P-F interval” represent in
reliability-centered maintenance?
A. The time between a planned and a forced outage
B. The time between potential failure detection and functional failure
,C. The period between two preventive maintenance routines
D. The interval between oil changes
CORRECT ANSWER: B. The time between potential failure
detection and functional failure
Rationale: The P-F interval is the warning period from when a potential
failure becomes detectable to when functional failure occurs. Inspection
frequency must be shorter than this interval for predictive maintenance to
be effective.
Question 7: Which technique is most suitable for detecting internal
cracks in a steel shaft without disassembly?
A. Visual inspection with a magnifying glass
B. Ultrasonic testing
C. Thermographic imaging
D. Torque measurement
CORRECT ANSWER: B. Ultrasonic testing
Rationale: Ultrasonic testing transmits high-frequency sound waves into the
material and detects reflections from internal discontinuities such as cracks,
voids, and inclusions, making it ideal for subsurface flaw detection.
Question 8: A rising trend in bearing temperature with stable load
and speed most likely indicates:
A. Improved lubrication
B. Developing bearing friction or inadequate lubrication
C. Reduced ambient humidity
D. Correct shaft alignment
CORRECT ANSWER: B. Developing bearing friction or inadequate
lubrication
Rationale: Increasing temperature under constant operating conditions
signals escalating friction, often from lubricant breakdown, contamination,
or early bearing damage, and warrants immediate investigation.
Question 9: Which of the following is NOT a typical input to a
predictive maintenance program?
A. Vibration data
B. Oil analysis results
, C. Employee vacation schedules
D. Thermographic images
CORRECT ANSWER: C. Employee vacation schedules
Rationale: Predictive maintenance relies on equipment condition data. Staff
scheduling is an administrative HR function and does not provide
diagnostic information about machine health.
Question 10: In oil analysis, an increase in iron (Fe) concentration
typically suggests:
A. Coolant ingress
B. Wear of ferrous components such as gears or cylinders
C. Oxidation of the base oil
D. Water contamination
CORRECT ANSWER: B. Wear of ferrous components such as gears
or cylinders
Rationale: Iron is a primary alloying element in steel. Elevated Fe in used
oil indicates abrasion, adhesion, or fatigue wear of ferrous machine parts,
and its rate of increase helps assess wear severity.
Question 11: What is the primary advantage of predictive
maintenance over preventive maintenance?
A. It eliminates the need for spare parts inventory
B. It allows maintenance to be performed only when justified by actual
condition
C. It requires no specialized training
D. It guarantees zero equipment failures
CORRECT ANSWER: B. It allows maintenance to be performed only
when justified by actual condition
Rationale: Predictive maintenance uses condition data to optimize timing,
reducing unnecessary interventions and preventing unexpected failures,
unlike time-based preventive maintenance which may service healthy
equipment.
Question 12: Which sensor is most appropriate for measuring shaft
rotational speed?
Maintenance & Troubleshooting Study Guide, Exam
Review & Practice Questions | AMTEC Advanced
Technologies in Predictive Maintenance, Machine
Vibration Analysis, Vibration Measurement & Signature
Analysis, Electrical Testing & Motor Diagnostics, Infrared
Thermography, Ultrasonic Analysis, Predictive
Maintenance Techniques, Equipment History, Preventive
Maintenance, CMMS, Troubleshooting, Root-Cause
Analysis, Safety, PPE & Detailed Rationales
Question 1: In the context of predictive maintenance, what is the
primary purpose of condition monitoring?
A. To schedule maintenance tasks based on calendar intervals
B. To detect early signs of equipment degradation during operation
C. To replace all components before they fail
D. To reduce the initial cost of new equipment procurement
CORRECT ANSWER: B. To detect early signs of equipment
degradation during operation
Rationale: Condition monitoring is a core predictive maintenance technique
that involves measuring physical parameters (vibration, temperature, oil
debris, etc.) to identify developing faults while the machine is running,
enabling maintenance to be planned before functional failure occurs.
Question 2: Which maintenance strategy is characterized by
performing maintenance only after a functional failure has
occurred?
A. Preventive maintenance
B. Predictive maintenance
C. Reactive maintenance
D. Proactive maintenance
CORRECT ANSWER: C. Reactive maintenance
Rationale: Reactive maintenance, also called run-to-failure, involves no
action until the equipment actually breaks down. It is appropriate only for
non-critical, inexpensive items where the cost of failure is low.
Question 3: Vibration analysis is most effective for detecting which
of the following machine faults?
,A. Corrosion of a static support frame
B. Misalignment and bearing degradation
C. Electrical resistance change in a cable
D. Lubricant viscosity variation
CORRECT ANSWER: B. Misalignment and bearing degradation
Rationale: Vibration signatures reveal dynamic mechanical problems such
as imbalance, misalignment, looseness, and rolling-element bearing defects
because these faults generate characteristic frequency components.
Question 4: In thermography, an abnormally hot electrical
connection typically indicates:
A. Excessive insulation resistance
B. High contact resistance or loose connection
C. Correct torque on the terminal
D. Low ambient temperature
CORRECT ANSWER: B. High contact resistance or loose connection
Rationale: A loose or corroded electrical joint increases resistance, causing
localized I²R heating that appears as a hot spot on an infrared image,
signaling a potential fire or failure risk.
Question 5: Which of the following is an appropriate unit for
expressing overall vibration velocity?
A. Millimeters per second (mm/s)
B. Micrometres (µm)
C. Pascals (Pa)
D. Siemens per metre (S/m)
CORRECT ANSWER: A. Millimeters per second (mm/s)
Rationale: Velocity in mm/s is a standard broadband measure of vibration
severity and correlates well with fatigue damage in the mid-frequency
range (approximately 10–1000 Hz).
Question 6: What does the term “P-F interval” represent in
reliability-centered maintenance?
A. The time between a planned and a forced outage
B. The time between potential failure detection and functional failure
,C. The period between two preventive maintenance routines
D. The interval between oil changes
CORRECT ANSWER: B. The time between potential failure
detection and functional failure
Rationale: The P-F interval is the warning period from when a potential
failure becomes detectable to when functional failure occurs. Inspection
frequency must be shorter than this interval for predictive maintenance to
be effective.
Question 7: Which technique is most suitable for detecting internal
cracks in a steel shaft without disassembly?
A. Visual inspection with a magnifying glass
B. Ultrasonic testing
C. Thermographic imaging
D. Torque measurement
CORRECT ANSWER: B. Ultrasonic testing
Rationale: Ultrasonic testing transmits high-frequency sound waves into the
material and detects reflections from internal discontinuities such as cracks,
voids, and inclusions, making it ideal for subsurface flaw detection.
Question 8: A rising trend in bearing temperature with stable load
and speed most likely indicates:
A. Improved lubrication
B. Developing bearing friction or inadequate lubrication
C. Reduced ambient humidity
D. Correct shaft alignment
CORRECT ANSWER: B. Developing bearing friction or inadequate
lubrication
Rationale: Increasing temperature under constant operating conditions
signals escalating friction, often from lubricant breakdown, contamination,
or early bearing damage, and warrants immediate investigation.
Question 9: Which of the following is NOT a typical input to a
predictive maintenance program?
A. Vibration data
B. Oil analysis results
, C. Employee vacation schedules
D. Thermographic images
CORRECT ANSWER: C. Employee vacation schedules
Rationale: Predictive maintenance relies on equipment condition data. Staff
scheduling is an administrative HR function and does not provide
diagnostic information about machine health.
Question 10: In oil analysis, an increase in iron (Fe) concentration
typically suggests:
A. Coolant ingress
B. Wear of ferrous components such as gears or cylinders
C. Oxidation of the base oil
D. Water contamination
CORRECT ANSWER: B. Wear of ferrous components such as gears
or cylinders
Rationale: Iron is a primary alloying element in steel. Elevated Fe in used
oil indicates abrasion, adhesion, or fatigue wear of ferrous machine parts,
and its rate of increase helps assess wear severity.
Question 11: What is the primary advantage of predictive
maintenance over preventive maintenance?
A. It eliminates the need for spare parts inventory
B. It allows maintenance to be performed only when justified by actual
condition
C. It requires no specialized training
D. It guarantees zero equipment failures
CORRECT ANSWER: B. It allows maintenance to be performed only
when justified by actual condition
Rationale: Predictive maintenance uses condition data to optimize timing,
reducing unnecessary interventions and preventing unexpected failures,
unlike time-based preventive maintenance which may service healthy
equipment.
Question 12: Which sensor is most appropriate for measuring shaft
rotational speed?
