CQE (CQE) Course 2

Question 1

A quality engineer wants to assess the capability of a process. Which index measures whether the process is centered within the specification limits?

Accepted Answer

Cpk

Answer

Cpk accounts for process centering by using the minimum of the upper and lower capability indices, while Cp only measures spread.

Question 2

In a Failure Mode and Effects Analysis (FMEA), the Risk Priority Number (RPN) is calculated as:

Accepted Answer

Severity × Occurrence × Detection

Answer

RPN = Severity × Occurrence × Detection, combining all three risk dimensions into a single priority score.

Question 3

Which type of control chart is most appropriate for monitoring the number of defects per unit when the sample size varies?

Accepted Answer

u chart

Answer

The u chart tracks defects per unit and accommodates variable subgroup sizes, unlike the c chart which requires constant sample size.

Question 4

A quality team uses a cause-and-effect diagram. Which of the following best describes its primary purpose?

Accepted Answer

Identify root causes of a problem

Answer

The Ishikawa (fishbone) diagram organizes potential causes into categories to identify root causes of a quality problem.

Question 5

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

Accepted Answer

The worst tolerable process average for acceptance

Answer

AQL is the quality level that is the worst tolerable process average still considered acceptable for routine acceptance by the sampling plan.

CQE - Certified Quality Engineer Practice Test