CPE Quality Control & Reliability Engineering 2

Question 1

What is the primary goal of a Failure Mode and Effects Analysis (FMEA)?

Accepted Answer

To proactively identify potential failure modes and their effects before they occur

Answer

To document failures that have already occurred in production

Answer

To calculate the cost of quality failures

Answer

To establish acceptance sampling plans for incoming materials

Question 2

In an FMEA, the Risk Priority Number (RPN) is calculated as the product of which three factors?

Accepted Answer

Severity, Occurrence, and Detection

Answer

Frequency, Impact, and Cost

Answer

Probability, Consequence, and Mitigation

Answer

Likelihood, Severity, and Recovery

Question 3

What is the primary objective of Reliability-Centered Maintenance (RCM)?

Accepted Answer

To select the most effective maintenance strategy for each failure mode based on its consequences

Answer

To perform maintenance on a fixed time-based schedule regardless of condition

Answer

To eliminate all scheduled preventive maintenance in favor of run-to-failure

Answer

To maximize spare parts inventory to minimize downtime

Question 4

A p-chart in statistical process control is used to monitor which type of data?

Accepted Answer

The proportion of nonconforming units in a sample

Answer

Continuous measurements such as diameter or weight

Answer

The number of defects per unit on a continuous scale

Answer

Time between successive failures

Question 5

What does the fishbone (Ishikawa) diagram help quality engineers identify?

Accepted Answer

The root causes of a problem organized by category

Answer

The statistical distribution of defect data

Answer

The control limits for a process

Answer

The sequence of steps in a manufacturing process

Question 6

Mean Time To Repair (MTTR) is best described as:

Accepted Answer

The average time required to restore a failed system to operational status

Answer

The average time between consecutive failures of a system

Answer

The minimum time guaranteed before the next failure

Answer

The total operating time divided by total failures over a period

Question 7

In acceptance sampling, what does the Acceptable Quality Level (AQL) represent?

Accepted Answer

The worst acceptable process average of defectives that is still satisfactory to the consumer

Answer

The maximum allowable percentage of defects in the entire lot

Answer

The minimum sample size required for statistical validity

Answer

The confidence level of the sampling plan