Quality Technician Certification

Study Guide

Test your preparedness for the exam using this study guide. Answers are at the end.

1. At what stage of the problem-solving process would a team most likely use a cause-effect diagram?
1. Description of the process associated with the problem
2. Definition of the problem and its scope
3. Organization of possible problem causes
4. Collection of data to identify actual causes

2. Statistical validity implies that
   1. meaningful conclusions can be drawn from the data.
   2. there is a mathematical derivation behind the technique used.
   3. ANSI/ASQC Z1.4-1993 must be used.
   4. the sample was obtained in a random manner.

3. Steel bars are cut to cylindrical shafts by means of a lathe. The diameter and allowable tolerance of the shaft is 2.000 ± .001 inch. A control chart is used to monitor the quality level of the process. Which of the following plots on the control chart might indicate a problem of wear on the lathe?
   1. The diameter of a single shaft above 2.001 inch
   2. The diameter of a single shaft below 1.999 inch
   3. An apparent increasing trend in the shaft diameters
   4. Erratic in-tolerance or out-of-tolerance diameter measurements

4. When part dimensions are being measured, all of the following are characteristics of coordinate measuring machines (CMM) EXCEPT that all CMMs have the
   1. same configuration and mode of operation.
   2. ability to measure different features of a part in one setup.
   3. provision of digital readout and automatic data logging.
   4. ability to take all measurements from one geometrically fixed measurement system.

5. To check that a micrometer is capable of providing accurate measurements of a part dimension, a technician would use a
   1. gage block
   2. dial indicator
   3. vernier caliper
   4. control sample

6. If a shaft with a diameter of 0.500 ± .002 inches is supposed to fit inside a hole, and there is only 0.001 inch clearance between them at maximum material condition (MMC), the MMC of the hole should be:
   1. 0.498 inch
   2. 0.500 inch
   3. 0.502 inch
   4. 0.503 inch

7. In deciding whether sampling inspection of a part would be more economical than conducting 100% inspection, a technician needs to determine all of the following EXCEPT the cost of
   1. inspecting parts
   2. destructive testing
   3. finding no defective parts
   4. improving the production process

8. A sample consists of one or more units of product drawn from a lot or batch on the basis of
   1. defect of the product
   2. random selection
   3. size of the product
   4. when the inspection process was completed

9. A classification of defects is a list of possible product defects that are classified according to:
   1. acceptability
   2. seriousness
   3. quantity
   4. size

10. Process control audits are used to
    1. assist in determining process capability.
    2. replace thorough systems and procedures audits.
    3. replace thorough in-line product audits.
    4. ensure that some minimal auditing is conducted on a product.

11. Special process studies that involve investigation and tests are used to do which of the following?
    1. Locate the causes of nonconforming products
    2. Determine the possibility of improving quality characteristics
    3. Ensure that improvement and corrective actions are permanent and complete
    4. Increase production throughput
    1. I and IV only
    2. II and III only
    3. I, II, and III only
    4. II, III, and IV only
    
    
12. Customer complaint data can reveal which of the following?
    1. That a low complaint rate is not proof of customer satisfaction
    2. That a high complaint rate is proof of customer dissatisfaction
    3. Conclusive measures of product/service performance
    1. I and II only
    2. I and III only
    3. II and III only
    4. I, II, and III

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