CQE Reliability and Risk Management 2

Question 1

In FMEA, which action would most effectively reduce a high Severity rating?

Accepted Answer

Redesigning the product or process to eliminate or mitigate the failure effect

Answer

Severity ratings can only be reduced by redesigning the product or process to change or eliminate the failure mode's effect on the customer, as severity reflects the inherent consequence of the failure.

Question 2

Weibull analysis is used in reliability engineering primarily to:

Accepted Answer

Characterize failure time distributions and identify failure modes

Answer

Weibull analysis fits failure time data to the flexible Weibull distribution, whose shape parameter (beta) identifies whether failures are due to infant mortality (β<1), random (β=1), or wear-out (β>1) modes.

Question 3

What is meant by 'design redundancy' as a reliability strategy?

Accepted Answer

Providing backup components or systems so the system functions if one component fails

Answer

Design redundancy improves reliability by incorporating parallel components or subsystems that can take over function if a primary component fails, preventing system-level failure.

Question 4

In risk management, what does a risk matrix primarily help determine?

Accepted Answer

The priority of risks based on likelihood and severity for mitigation planning

Answer

A risk matrix plots risks on a grid of likelihood versus severity, helping teams prioritize which risks require immediate mitigation versus monitoring versus acceptance.

Question 5

Failure Mode, Effects, and Criticality Analysis (FMECA) extends FMEA by adding:

Accepted Answer

A criticality analysis that quantifies the probability and severity of each failure mode

Answer

FMECA adds a criticality analysis to FMEA, using failure rate data and mission time to mathematically quantify each failure mode's criticality, enabling more rigorous prioritization.

CQE - Certified Quality Engineer Practice Test

CQE - Certified Quality Engineer Practice Test

CQE Reliability and Risk Management 2