CRE Quality Control Procedures 4

Question 1

Which corrective action methodology uses the 8D (Eight Disciplines) approach?

Accepted Answer

A structured team-based problem-solving process originally developed by Ford Motor Company

Answer

The 8D process is a Ford-originated team problem-solving method with eight structured steps from team formation to preventing recurrence.

Question 2

In statistical process control, the term 'rational subgrouping' means:

Accepted Answer

Grouping samples so variation within subgroups reflects only common cause variation

Answer

Rational subgroups capture short-term common cause variation within groups so that between-group variation reveals special causes.

Question 3

What is the primary purpose of a Pre-Control chart?

Accepted Answer

To provide simple setup verification and ongoing process monitoring without requiring statistical training

Answer

Pre-Control uses specification limits divided into colored zones to give operators simple go/no-go process guidance without complex calculations.

Question 4

A lot disposition of 'use-as-is' (UAI) requires:

Accepted Answer

Engineering review and written approval that the nonconforming item meets fit, form, and function requirements

Answer

Use-as-is disposition requires engineering authority to confirm that the deviation does not affect the part's intended function.

Question 5

Which sampling scheme is appropriate when process quality is expected to be consistent and lot-by-lot inspection is too costly?

Accepted Answer

Skip-lot sampling

Answer

Skip-lot sampling inspects only a fraction of submitted lots when a supplier demonstrates sustained quality history, reducing inspection cost.

(CRE) Certified Reliability Engineer Practice Test