BMAT Quality Control & Assurance 4

Question 1

Which sampling strategy collects every nth item from a production run, offering simplicity while assuming the population is randomly ordered?

Accepted Answer

Systematic sampling

Answer

Systematic sampling selects items at fixed intervals (every nth unit), but may introduce bias if the process has a cyclic pattern matching the interval.

Question 2

Under ISO 9001:2015, what is the purpose of an internal audit?

Accepted Answer

To determine whether the QMS conforms to requirements and is effectively implemented

Answer

Internal audits verify that the QMS conforms to the organization's own requirements and the ISO standard, and that it is effectively maintained.

Question 3

The '5 Whys' technique is most appropriate for:

Accepted Answer

Drilling down to the root cause of a problem through iterative questioning

Answer

The 5 Whys involves repeatedly asking 'why' (typically five times) until the fundamental root cause of a problem is uncovered.

Question 4

A process produces outputs with a mean of 50.2 mm and a standard deviation of 0.3 mm. The specification is 50 ± 1 mm. What is the approximate Cp value?

Accepted Answer

1.11

Answer

Cp = (USL – LSL) / (6σ) = (51 – 49) / (6 × 0.3) = 2 / 1.8 ≈ 1.11, indicating the process spread fits within specs but centering should also be evaluated.

Question 5

Which document defines the quality requirements that a product or service must meet and forms the basis for acceptance criteria?

Accepted Answer

Product specification

Answer

A product specification defines the measurable requirements (dimensions, performance, material properties) against which the product is inspected and accepted or rejected.

BMAT - Assessment Practice Test

BMAT - Assessment Practice Test

BMAT Quality Control & Assurance 4