ASQ Certified Quality Inspector & Reliability Engineer 5

Question 1

System availability (A) is correctly expressed as:

Accepted Answer

MTBF / (MTBF + MTTR)

Answer

Availability A = MTBF / (MTBF + MTTR), representing the proportion of time a system is operational.

Question 2

A quality engineer wants to determine whether there is a linear relationship between oven temperature and tensile strength. Which tool is most appropriate?

Accepted Answer

Scatter diagram with regression analysis

Answer

Scatter diagrams visually show correlation, and regression analysis quantifies the linear relationship between two continuous variables.

Question 3

According to MIL-HDBK-217, what is the primary method for predicting electronic component reliability?

Accepted Answer

Parts count and parts stress reliability prediction

Answer

MIL-HDBK-217 provides parts count and parts stress methods to predict failure rates of electronic components based on part type and operating conditions.

Question 4

During a first article inspection (FAI), the inspector is verifying that:

Accepted Answer

The first unit from a new production process meets all design requirements

Answer

FAI confirms that the production process, tooling, and materials produce a product that fully conforms to design requirements before full production begins.

Question 5

A reliability test places 20 units on test; 4 fail during 1000 hours of testing. Using the time-terminated test, what is the estimated MTBF?

Accepted Answer

5,000 hours

Answer

MTBF = Total unit-hours / Number of failures = (20 × 1000) / 4 = 20,000 / 4 = 5,000 hours.

ASQ - American Society for Quality Certification Practice Test

ASQ - American Society for Quality Certification Practice Test

ASQ Certified Quality Inspector & Reliability Engineer 5