Question 1
A shaft diameter is recorded as 1.4750 in. The inspector must report the value truncated to three decimal places. The reported value is:
Show answer & explanation
Correct answer: A - 1.475
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The CQI exam has 110 questions and runs 4 hours 18 minutes.
These 10 free CQI questions are organized by exam domain, so you can see how each part of the Certified Quality Inspector blueprint is tested. Reveal the answer and explanation under each question.
A shaft diameter is recorded as 1.4750 in. The inspector must report the value truncated to three decimal places. The reported value is:
Correct answer: A - 1.475
A drawing specifies a surface finish of 32 microinch. A supplier's certificate reports the same surface as 0.8 micrometer. These two values are:
Correct answer: A - Approximately equivalent
Five bore diameters are measured: 0.500, 0.501, 0.502, 0.503, and 0.560 in. The 0.560 reading is confirmed to be a real part, not a measurement error. Which measure of central tendency BEST represents the typical output of this process?
Correct answer: D - The median, because it is resistant to the extreme value
A process is normally distributed with a mean of 2.000 in. and a standard deviation of 0.004 in. Approximately what percentage of parts fall between 1.992 in. and 2.008 in.?
Correct answer: C - 95%
A feature is toleranced at 1.250 in. +/- 0.004 in. Applying the 10:1 rule, the maximum acceptable discrimination for the inspection gauge is:
Correct answer: A - 0.0008 in.
An inspector must measure the inside diameter of a 0.750 in. bore. She selects a telescoping gauge. After locking the gauge in the bore, her next action is to:
Correct answer: D - Measure across the gauge's contacts with a micrometer
During scheduled calibration, a micrometer used for final inspection is found to read 0.0025 in. oversize. It last passed calibration six months ago. The FIRST action regarding product is to:
Correct answer: C - Recall and assess product accepted since the last successful calibration
Three operators each measure the same part ten times with the same calibrated gauge. Each operator's ten readings are tightly grouped, but the three operators' averages differ noticeably from one another. This MOST directly indicates a problem with:
Correct answer: D - Reproducibility
A 10 in. sine bar must be set to an angle of 20 degrees. The required gauge block stack height is:
Correct answer: B - 3.4202 in.
A hole is dimensioned 0.500-0.510 in. with a position tolerance of diameter 0.010 in. at MMC. The hole is produced at an actual size of 0.507 in. The total positional tolerance now available is:
Correct answer: C - 0.017 in.
The CQI exam also covers these domains. Drill them in the full free practice test:
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