Free ASQ Certified Quality Inspector examination Practice Questions

Sample Practice Questions

Try these 10 sample questions from the ASQ Certified Quality Inspector examination practice bank. Each includes the answer and explanation. Continue with the interactive practice above to review the full question set.

1. 1An inspector lays out 3/8-inch gauge intervals along a usable reference length of 6.75 inches. How many complete intervals fit exactly along that length?

   1. A.16 intervals
   2. B.18 intervalsCorrect answer: B
   3. C.2 intervals
   4. D.54 intervals

   Explanation: OpenStax states, "To divide fractions, multiply the first fraction by the reciprocal of the second." Thus 6.75 ÷ (3/8) = (27/4) × (8/3) = 18 intervals, with no remainder. Sixteen drops the 0.75-inch portion; two uses only that fractional portion; 54 multiplies by 8 but omits division by 3.

   Reference: OpenStax Prealgebra 2e — 4.2, Fraction Division

2. 2An inspector needs an actual thickness reading for sheet stock, resolved to 0.001 inch. Which instrument is designed to measure that external dimension?

   1. A.Thread micrometer
   2. B.Outside micrometerCorrect answer: B
   3. C.Inside micrometer
   4. D.Depth micrometer

   Explanation: The source states, "It may be used to measure the outside dimensions of shafts, thickness of sheet metal stock, the diameter of drills, and for many other applications." The antecedent is the outside micrometer. Its opposed external measuring faces capture sheet thickness; the other micrometer configurations serve thread, internal or depth features.

   Reference: FAA Aviation Maintenance Technician Handbook—General — Chapter 11, Micrometer Calipers, page 11-19

3. 3Two drawings have similar part names. Before using one as the inspection reference, which title-block entry uniquely identifies the print?

   1. A.Drawing numberCorrect answer: A
   2. B.Drawing scale
   3. C.Draftsman's initials
   4. D.Paper size

   Explanation: The source states, "A drawing number to identify the print for filing purposes and to prevent confusing it with any other print." The drawing number distinguishes the print. Scale, initials and sheet size can be shared by unrelated drawings.

   Reference: FAA Aviation Maintenance Technician Handbook—General — Chapter 4, Title Blocks, page 4-3

4. 4A manufacturer establishes planned system activities to give management and customers confidence that quality requirements will be fulfilled. Which concept describes this role?

   1. A.Quality assuranceCorrect answer: A
   2. B.Product acceptance sampling
   3. C.Corrective disposition
   4. D.Inspection sorting

   Explanation: The source states, "focused on providing confidence that quality requirements will be fulfilled." This is the assurance role. Sampling, disposition and sorting are specific operational activities rather than the system's confidence-providing function.

   Reference: ASQ Quality Assurance — Quality Assurance

5. 5A report requires a measured dimension of 12.746 mm to be rounded to the nearest 0.01 mm. Which value should the inspector record?

   1. A.12.74 mm
   2. B.12.70 mm
   3. C.12.75 mmCorrect answer: C
   4. D.12.80 mm

   Explanation: The rounding rule asks, "Is this digit greater than or equal to 5? Yes - add 1 to the digit in the given place value." The thousandths digit is 6, so the hundredths digit 4 increases to 5: 12.746 mm becomes 12.75 mm. Recording 12.74 truncates; 12.70 rounds to tenths; 12.80 rounds upward to the next tenth rather than to the nearest hundredth.

   Reference: OpenStax Prealgebra 2e — Chapter 5 Key Concepts, Round a decimal

6. 6An inspector slightly rocks a caliper while measuring a hole with its inside jaws. Which indicated value should be used for the inside diameter?

   1. A.The average of the minimum and maximum indications
   2. B.The minimum indication reached during rocking
   3. C.The maximum indication reached during rockingCorrect answer: C
   4. D.The difference between the minimum and maximum indications

   Explanation: The source states, "Read the maximum indicated value during inside measurement." The maximum internal span corresponds to the diameter. Minimum, average and excursion measure other aspects of the rocking movement.

   Reference: Mitutoyo Quick Guide to Precision Measuring Instruments — General Notes on Use of Caliper, Inside measurement

7. 7A revised drawing changes a hole dimension. An inspection copy still shows the previous value. Where should the inspector look to identify the documented change before updating the inspection reference?

   1. A.The bill-of-material quantity column
   2. B.The projection-angle symbol
   3. C.The revision block and its change entryCorrect answer: C
   4. D.The sheet border's zone grid

   Explanation: The source states, "Revisions to a drawing are necessitated by changes in dimensions, design, or materials. The changes are usually listed in ruled columns either adjacent to the title block or at one corner of the drawing." The revision record documents the change. Material quantities, projection notation and location grids have other purposes.

   Reference: FAA Aviation Maintenance Technician Handbook—General — Chapter 4, Revision Block, page 4-8

8. 8A manufacturer pays warranty-repair costs for defects discovered after customers receive the product. In a cost-of-quality classification, where do these costs belong?

   1. A.Prevention costs
   2. B.Appraisal costs
   3. C.Internal failure costs
   4. D.External failure costsCorrect answer: D

   Explanation: The source states, "External failure costs are costs associated with defects found after the customer receives the product or service." The defects were discovered after transfer to customers. Prevention avoids problems, appraisal evaluates quality, and internal failures are discovered before that transfer.

   Reference: ASQ External failure costs — External failure costs

9. 9A dimensional study requires 0.25 times a measured thickness of 2.40 mm. What is the resulting thickness?

   1. A.6.00 mm
   2. B.0.06 mm
   3. C.60.00 mm
   4. D.0.60 mmCorrect answer: D

   Explanation: OpenStax states, "The number of decimal places in the product is the sum of the number of decimal places in the factors." Calculate 240 × 25 = 6000, then allow four decimal places: 0.6000 mm = 0.60 mm. Six millimeters places the decimal one position too far right; 0.06 places it one too far left; 60 places it two too far right.

   Reference: OpenStax Prealgebra 2e — Chapter 5 Key Concepts, Multiply decimal numbers, step 4

10. 10A quality plan requires only a fixed-limit pass/fail check of an internal screw thread. Which gage configuration is appropriate?

    1. A.Working thread plug gageCorrect answer: A
    2. B.Working thread ring gage
    3. C.Outside thread micrometer
    4. D.External thread indicating gage

    Explanation: The source states, "Go / No-Go gages include working thread plug gages for inspecting internal part threads and thread ring gages for inspecting external part threads." A plug enters the internal thread. A ring and the two external measurement configurations address external threads; a micrometer also provides a variable value instead of the specified fixed-limit decision.

    Reference: Vermont Gage—Internal Part Thread Inspection — Internal Part Thread Inspection, working thread plug gages