South Carolina Predictive Maintenance
Technician Certification License Exam
Practice Questions And Correct Answers
(Verified Answers) Plus Rationale 2026
Q&A| Instant Download Pdf
1. Which of the following describes the primary goal of predictive
maintenance?
A. To identify equipment failure before it occurs
B. To perform routine maintenance on a fixed schedule
C. To replace equipment only after it fails
D. To increase daily production regardless of equipment condition
Predictive maintenance aims to detect signs of failure early so
corrective action can be taken before a breakdown occurs.
2. What type of data is most commonly monitored in vibration analysis?
A. Temperature fluctuations
B. Oil viscosity
C. Frequency and amplitude of mechanical oscillations
D. Electrical current draw
Vibration analysis focuses on detecting changes in frequency and
amplitude to identify mechanical faults.
3. Infrared thermography is primarily used to detect:
A. Chemical composition changes
, B. Abnormal heat patterns in equipment
C. Fluid contamination
D. Vibration anomalies
Infrared thermography identifies heat anomalies that can signify
impending failures.
4. What is the typical cause of an increase in bearing vibration at specific
frequency ranges?
A. Electrical surge
B. Inner or outer raceway defects
C. Lubricant color change
D. Load decrease
Bearing defects often show characteristic vibration frequencies
related to the bearing geometry.
5. Ultrasound testing in predictive maintenance is most useful for
detecting:
A. Surface cracks
B. Temperature gradients
C. Gas or steam leaks and electrical discharges
D. Lubricant contamination
Ultrasound is highly sensitive to high-frequency emissions from leaks
and electrical arcing.
6. Which of the following tools would you use to collect vibration data?
A. Torque wrench
B. Calorimeter
C. Accelerometer
D. Multimeter
Accelerometers measure acceleration, which is converted to velocity
or displacement for vibration analysis.
, 7. An oil analysis that shows elevated iron content most likely indicates
wear in:
A. Belts
B. Seals
C. Bearings and gears
D. Electrical contacts
Iron particles typically originate from ferrous metal wear in bearings
and gears.
8. What does the term “trend analysis” refer to in predictive
maintenance?
A. Scheduling maintenance every 30 days
B. Predicting market trends
C. Monitoring condition data over time to detect changes
D. Random inspection of equipment
Trend analysis examines data over time to identify deteriorating
conditions.
9. A high vibration reading at twice running speed typically indicates:
A. Loose bolts
B. Thermal expansion
C. Unbalance
D. Electrical noise
Unbalance creates forces at twice the shaft rotational speed.
10. What is the first step in a predictive maintenance program?
A. Replace all old equipment
B. Purchase diagnostic tools
C. Identify critical assets and failure modes
D. Train all staff immediately
Critical asset identification ensures focus on components that most
impact operations.
Technician Certification License Exam
Practice Questions And Correct Answers
(Verified Answers) Plus Rationale 2026
Q&A| Instant Download Pdf
1. Which of the following describes the primary goal of predictive
maintenance?
A. To identify equipment failure before it occurs
B. To perform routine maintenance on a fixed schedule
C. To replace equipment only after it fails
D. To increase daily production regardless of equipment condition
Predictive maintenance aims to detect signs of failure early so
corrective action can be taken before a breakdown occurs.
2. What type of data is most commonly monitored in vibration analysis?
A. Temperature fluctuations
B. Oil viscosity
C. Frequency and amplitude of mechanical oscillations
D. Electrical current draw
Vibration analysis focuses on detecting changes in frequency and
amplitude to identify mechanical faults.
3. Infrared thermography is primarily used to detect:
A. Chemical composition changes
, B. Abnormal heat patterns in equipment
C. Fluid contamination
D. Vibration anomalies
Infrared thermography identifies heat anomalies that can signify
impending failures.
4. What is the typical cause of an increase in bearing vibration at specific
frequency ranges?
A. Electrical surge
B. Inner or outer raceway defects
C. Lubricant color change
D. Load decrease
Bearing defects often show characteristic vibration frequencies
related to the bearing geometry.
5. Ultrasound testing in predictive maintenance is most useful for
detecting:
A. Surface cracks
B. Temperature gradients
C. Gas or steam leaks and electrical discharges
D. Lubricant contamination
Ultrasound is highly sensitive to high-frequency emissions from leaks
and electrical arcing.
6. Which of the following tools would you use to collect vibration data?
A. Torque wrench
B. Calorimeter
C. Accelerometer
D. Multimeter
Accelerometers measure acceleration, which is converted to velocity
or displacement for vibration analysis.
, 7. An oil analysis that shows elevated iron content most likely indicates
wear in:
A. Belts
B. Seals
C. Bearings and gears
D. Electrical contacts
Iron particles typically originate from ferrous metal wear in bearings
and gears.
8. What does the term “trend analysis” refer to in predictive
maintenance?
A. Scheduling maintenance every 30 days
B. Predicting market trends
C. Monitoring condition data over time to detect changes
D. Random inspection of equipment
Trend analysis examines data over time to identify deteriorating
conditions.
9. A high vibration reading at twice running speed typically indicates:
A. Loose bolts
B. Thermal expansion
C. Unbalance
D. Electrical noise
Unbalance creates forces at twice the shaft rotational speed.
10. What is the first step in a predictive maintenance program?
A. Replace all old equipment
B. Purchase diagnostic tools
C. Identify critical assets and failure modes
D. Train all staff immediately
Critical asset identification ensures focus on components that most
impact operations.
