BE/B Eng Bachelor of Engineering Industrial Engineering 2

Question 1

In Six Sigma methodology, the DMAIC improvement cycle stands for:

Accepted Answer

Define, Measure, Analyze, Improve, Control

Answer

DMAIC is the structured Six Sigma improvement framework: Define the problem, Measure the current process, Analyze root causes, Improve the process, and Control the gains.

Question 2

A process operating at Six Sigma quality level produces approximately how many defects per million opportunities (DPMO)?

Accepted Answer

3.4

Answer

Six Sigma quality corresponds to 3.4 DPMO, based on a normal distribution shifted 1.5 sigma from the mean relative to specification limits.

Question 3

The process capability index Cp is calculated using which formula?

Accepted Answer

(USL − LSL) / 6σ

Answer

Cp = (USL − LSL) / 6σ compares the width of the specification (tolerance) range to the natural spread of the process (6 standard deviations), regardless of process centering.

Question 4

In statistical process control (SPC), a p-chart is used to monitor:

Accepted Answer

The proportion of nonconforming (defective) items in successive samples

Answer

The p-chart tracks the fraction or proportion of nonconforming items in samples over time to detect shifts in the process defect rate.

Question 5

Acceptance sampling is a quality technique used primarily to:

Accepted Answer

Decide whether to accept or reject an entire lot based on inspection of a random sample

Answer

Acceptance sampling applies statistical decision rules to a random sample to accept or reject the entire lot, balancing inspection cost against the risk of accepting bad lots.

BE/B Eng Bachelor of Engineering Practice Test

BE/B Eng Bachelor of Engineering Practice Test

BE/B Eng Bachelor of Engineering Industrial Engineering 2