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ASQ Certified Quality Technician Free Sample Questions

Description

Covers quality concepts and tools, statistical techniques and control charts, measurement equipment and calibration, inspection and sampling, quality audit types and components, and risk management.

8 free sample questions30 in the full practice test

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CQT Sample Questions

  1. Question 1

    Beginner

    Quality Concepts and Tools · Cost of Quality (COQ)

    A manufacturing facility recently invested in a high-speed, automated laser inspection system to measure the dimensional accuracy of stamped metal parts before they are shipped to customers. The goal is to prevent nonconforming parts from leaving the facility. In the context of the Cost of Quality (COQ), how should the depreciation, maintenance, and operating costs of this automated laser inspection system be classified?

    Answer and explanation

    Correct answer: B

    Appraisal costs are expenses incurred to determine the degree of conformance to quality requirements. Since the laser inspection system is actively measuring and evaluating the stamped parts to ensure they meet specifications before shipment, its associated costs fall under appraisal. Prevention costs are incurred to keep defects from happening in the first place (e.g., training, quality planning). Internal failure costs occur when defects are found before reaching the customer (e.g., scrap, rework), and external failure costs occur after the customer receives a defective product.

  2. Question 2

    Intermediate

    Quality Concepts and Tools · Problem-solving techniques / Lean

    A tier-1 automotive supplier is experiencing recurring surface scratches on machined aluminum engine blocks. The quality team initiates an 8D problem-solving process to address the issue. During the investigation, the team discovers that operators are placing their metal deburring tools directly on top of the machined engine blocks during breaks.

    To resolve this, the team designs and installs a dedicated, color-coded shadow board at every workstation, mandating that all tools must be placed in their specific cutouts when not in active use. Following this implementation, the scratch defect rate drops to zero over a three-month monitoring period.

    In the context of the 8D methodology and Lean principles, which 8D discipline does the implementation of the shadow board represent, and which 5S pillar does the shadow board primarily support?

    Answer and explanation

    Correct answer: C

    The installation of the shadow board is the actual execution of the solution that permanently eliminates the root cause, which aligns with D6 (Implement and Validate Permanent Corrective Actions) in the 8D methodology. In the 5S Lean framework, a shadow board is a classic example of 'Set in Order' (Seiton), which focuses on organizing necessary items so they are easy to find, use, and return to their proper locations. D3 involves temporary containment (like 100% sorting), and D5 is the selection/development phase before implementation.

    flowchart TD A[Root Cause Identified: Tools on Engine Blocks] --> B[D5: Develop Solution] B --> C[Design Shadow Board] C --> D[D6: Implement Permanent Action] D --> E[Install Shadow Board] E --> F[5S Principle: Set in Order]

  3. Question 3

    AdvancedMultiple answers

    Quality Concepts and Tools · The Seven Basic Quality Tools

    A quality technician is analyzing a sudden, unexplained spike in dimensional nonconformities on a high-volume injection molding line. The technician needs to first determine if the process variation is due to common causes or special causes. Once that is established, the technician needs to brainstorm and categorize the potential root causes of the dimensional issues with the cross-functional team.

    Which TWO of the seven basic quality tools are most appropriate for executing these specific tasks? (Select TWO)

    Answer and explanation

    Correct answers: A, B

    A Control Chart is the only basic quality tool specifically designed to distinguish between common cause (inherent) variation and special cause (assignable) variation over time by plotting data against calculated statistical control limits.

    The Cause and Effect Diagram (Ishikawa or Fishbone diagram) is the ideal tool for brainstorming and categorizing potential root causes (such as Man, Machine, Material, Method, Measurement, and Mother Nature) of a specific problem or effect.

  4. Question 4

    Beginner

    Statistical Techniques · Normal Distribution

    A precision machining process produces steel shafts for electric motors. The process is in statistical control and the output is normally distributed. The process has a mean diameter of 15.00 mm and a standard deviation of 0.05 mm.

    Based on the properties of a normal distribution, approximately what percentage of the steel shafts will have a diameter between 14.90 mm and 15.10 mm?

    Answer and explanation

    Correct answer: B

    The target range is 14.90 mm to 15.10 mm. The mean is 15.00 mm. The distance from the mean to either boundary is 0.10 mm. Since the standard deviation is 0.05 mm, this range represents exactly ±2 standard deviations from the mean (0.10 / 0.05 = 2). According to the empirical rule (68-95-99.7 rule) for a normal distribution, approximately 95.44% of the data falls within ±2 standard deviations of the mean.

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