Reliability Technician Certification Exam
(CRE-T) Questions And Correct Answers
(Verified Answers) Plus Rationales 2026
Q&A | Instant Download Pdf
1. The primary objective of reliability engineering is to:
A. Reduce production speed
B. Eliminate all failures
C. Increase equipment uptime at lowest life-cycle cost
D. Increase maintenance staffing
Answer: C
Reliability engineering focuses on maximizing availability and performance
while minimizing total life-cycle cost, not eliminating all failures.
2. Reliability is best defined as:
A. The strength of a component
B. The probability an item performs its intended function for a
specified time under stated conditions
, C. The speed of repair
D. The age of equipment
Answer: B
This is the standard statistical definition of reliability used in CRE-T and ISO
standards.
3. Which bathtub curve phase represents early-life failures?
A. Wear-out
B. Random
C. Infant mortality
D. Useful life
Answer: C
Infant mortality failures occur early due to defects, installation errors, or
poor commissioning.
4. Mean Time Between Failures (MTBF) applies primarily to:
A. Non-repairable items
B. Repairable systems
C. Human reliability
D. Safety systems only
,Answer: B
MTBF is used for repairable systems where failures are followed by
restoration.
5. Mean Time To Failure (MTTF) is most appropriate for:
A. Repairable pumps
B. Redundant systems
C. Non-repairable components
D. Maintainable assets
Answer: C
MTTF applies when the item is not repaired after failure.
6. Availability is calculated as:
A. MTBF ÷ MTTR
B. MTTR ÷ MTBF
C. MTBF ÷ (MTBF + MTTR)
D. MTTR ÷ (MTBF + MTTR)
Answer: C
This formula represents inherent availability for repairable systems.
7. Which maintenance strategy relies on condition indicators?
A. Reactive maintenance
, B. Preventive maintenance
C. Predictive maintenance
D. Breakdown maintenance
Answer: C
Predictive maintenance uses condition monitoring data to predict failures.
8. Vibration analysis is most effective for detecting:
A. Electrical insulation failure
B. Bearing and imbalance issues
C. Chemical corrosion
D. Software errors
Answer: B
Vibration monitoring excels at identifying rotating equipment faults.
9. Root Cause Failure Analysis (RCFA) should be performed:
A. After every failure
B. Only for catastrophic failures
C. On repetitive or high-impact failures
D. During equipment procurement
Answer: C
RCFA is resource-intensive and best applied where it provides high value.
(CRE-T) Questions And Correct Answers
(Verified Answers) Plus Rationales 2026
Q&A | Instant Download Pdf
1. The primary objective of reliability engineering is to:
A. Reduce production speed
B. Eliminate all failures
C. Increase equipment uptime at lowest life-cycle cost
D. Increase maintenance staffing
Answer: C
Reliability engineering focuses on maximizing availability and performance
while minimizing total life-cycle cost, not eliminating all failures.
2. Reliability is best defined as:
A. The strength of a component
B. The probability an item performs its intended function for a
specified time under stated conditions
, C. The speed of repair
D. The age of equipment
Answer: B
This is the standard statistical definition of reliability used in CRE-T and ISO
standards.
3. Which bathtub curve phase represents early-life failures?
A. Wear-out
B. Random
C. Infant mortality
D. Useful life
Answer: C
Infant mortality failures occur early due to defects, installation errors, or
poor commissioning.
4. Mean Time Between Failures (MTBF) applies primarily to:
A. Non-repairable items
B. Repairable systems
C. Human reliability
D. Safety systems only
,Answer: B
MTBF is used for repairable systems where failures are followed by
restoration.
5. Mean Time To Failure (MTTF) is most appropriate for:
A. Repairable pumps
B. Redundant systems
C. Non-repairable components
D. Maintainable assets
Answer: C
MTTF applies when the item is not repaired after failure.
6. Availability is calculated as:
A. MTBF ÷ MTTR
B. MTTR ÷ MTBF
C. MTBF ÷ (MTBF + MTTR)
D. MTTR ÷ (MTBF + MTTR)
Answer: C
This formula represents inherent availability for repairable systems.
7. Which maintenance strategy relies on condition indicators?
A. Reactive maintenance
, B. Preventive maintenance
C. Predictive maintenance
D. Breakdown maintenance
Answer: C
Predictive maintenance uses condition monitoring data to predict failures.
8. Vibration analysis is most effective for detecting:
A. Electrical insulation failure
B. Bearing and imbalance issues
C. Chemical corrosion
D. Software errors
Answer: B
Vibration monitoring excels at identifying rotating equipment faults.
9. Root Cause Failure Analysis (RCFA) should be performed:
A. After every failure
B. Only for catastrophic failures
C. On repetitive or high-impact failures
D. During equipment procurement
Answer: C
RCFA is resource-intensive and best applied where it provides high value.
