CPM Quality Control and Process Optimization 3

Question 1

A plant implements poka-yoke on an assembly line. What is the primary goal of this approach?

Accepted Answer

Prevent defects by making errors impossible or immediately detectable

Answer

Poka-yoke (mistake-proofing) designs processes or fixtures so that errors either cannot occur or are detected immediately when they do.

Question 2

In process optimization, what is the difference between efficiency and effectiveness?

Accepted Answer

Efficiency is doing things right; effectiveness is doing the right things

Answer

Efficiency measures how well resources are used (output per input), while effectiveness measures whether the right outcomes are being achieved.

Question 3

Which of the following best describes a Type II error in acceptance sampling?

Accepted Answer

Accepting a bad lot (consumer's risk)

Answer

A Type II error in sampling occurs when a defective lot is accepted, representing the consumer's risk or beta risk.

Question 4

A plant manager wants to reduce changeover time using SMED. What does SMED stand for?

Accepted Answer

Single-Minute Exchange of Die

Answer

SMED (Single-Minute Exchange of Die) is a lean methodology targeting changeover times of less than 10 minutes to increase flexibility.

Question 5

What is the purpose of the control phase in a Six Sigma DMAIC project?

Accepted Answer

To sustain improvements and prevent regression to old performance levels

Answer

The Control phase implements monitoring systems, control plans, and standardized procedures to maintain gains achieved in the Improve phase.

(CPM) Certified Plant Manager Practice Test