ISA CAP Quality Assurance & Improvement 4

Question 1

The Deming Cycle (PDCA) in quality improvement stands for:

Accepted Answer

Plan, Do, Check, Act

Answer

PDCA stands for Plan, Do, Check, Act — a four-step iterative improvement cycle attributed to W. Edwards Deming.

Question 2

In process control, a Type II error (beta risk) in hypothesis testing refers to:

Accepted Answer

Failing to detect a real shift in the process mean

Answer

A Type II error (beta risk) occurs when a statistical test fails to detect a real process change that has actually occurred.

Question 3

An automation engineer wants to reduce measurement variability in a temperature control loop. Which action directly improves measurement system repeatability?

Accepted Answer

Replacing the sensor with a higher-precision instrument

Answer

Repeatability is the gauge's inherent variability under identical conditions; replacing the sensor with a more precise one directly reduces this variation.

Question 4

Which of the following is a key characteristic of attribute data in quality control?

Accepted Answer

Classified into discrete categories such as pass/fail or defect counts

Answer

Attribute data categorizes items into discrete groups (e.g., conforming/nonconforming) rather than measuring them on a continuous scale.

Question 5

What is the main difference between a defect and a defective unit in quality terminology?

Accepted Answer

A defective unit has one or more defects; a defect is a single nonconformance on any unit

Answer

A defect is a single nonconformance, while a defective unit is any unit containing one or more defects and is therefore nonconforming.

(ISA CAP) ISA Certified Automation Professional Practice Test

(ISA CAP) ISA Certified Automation Professional Practice Test

ISA CAP Quality Assurance & Improvement 4