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Free CQE Practice Questions

10 free, exam-style Certified Quality Engineer (CQE) (CQE) practice questions with answers and explanations. No signup required. Work through them below, then take the full free CQE practice test to study every exam domain.

These 10 free CQE questions are organized by exam domain, so you can see how each part of the Certified Quality Engineer (CQE) blueprint is tested. Reveal the answer and explanation under each question.

Domain 1: Management and Leadership

Question 1

A company adds an unexpected free premium feature to its product that customers did not request. Customers are thrilled. According to the Kano Model, this feature is classified as:

  1. A must-be (basic) attribute
  2. A one-dimensional (performance) attribute
  3. An attractive (delighter) attribute
  4. A reverse attribute
Show answer & explanation

Correct answer: C - An attractive (delighter) attribute

Domain 2: The Quality System

Question 2

A company's COQ report shows: Prevention 5%, Appraisal 25%, Internal Failure 40%, External Failure 30%. This distribution suggests the organization should:

  1. Reduce appraisal costs by eliminating inspections
  2. Increase prevention spending to reduce failure costs
  3. Shift resources from appraisal to internal failure correction activities
  4. Maintain the current cost distribution as it reflects industry norms
Show answer & explanation

Correct answer: B - Increase prevention spending to reduce failure costs

Domain 3: Product, Process, and Service Design

Question 3

Two failure modes have the same RPN of 120. Mode A has Severity=10, Occurrence=3, Detection=4. Mode B has Severity=2, Occurrence=6, Detection=10. Which should receive HIGHER priority and why?

  1. Mode B, because it has higher Occurrence and Detection ratings
  2. Mode A, because Severity should be prioritized when RPNs are equal
  3. Both should receive equal priority since RPN values are identical
  4. Mode B, because its Detection rating indicates no controls exist
Show answer & explanation

Correct answer: B - Mode A, because Severity should be prioritized when RPNs are equal

Question 4

A system has three components in series with reliabilities of 0.95, 0.90, and 0.98. What is the system reliability?

  1. 0.9500
  2. 0.9333
  3. 0.8379
  4. 0.7500
Show answer & explanation

Correct answer: C - 0.8379

Domain 4: Product and Process Control

Question 5

Under ANSI/ASQ Z1.4, switching from normal to tightened inspection is required when:

  1. 10 consecutive lots are accepted under normal inspection
  2. 2 of 5 consecutive lots are rejected under normal inspection
  3. The customer requests tightened inspection
  4. Production output decreases by more than 10%
Show answer & explanation

Correct answer: B - 2 of 5 consecutive lots are rejected under normal inspection

Question 6

A measurement system has excellent repeatability (%EV = 5%) but poor reproducibility (%AV = 28%). The BEST corrective action is to:

  1. Replace the measuring instrument with a higher-precision model to reduce total variation
  2. Standardize operator techniques and provide training on the measurement method
  3. Increase the calibration frequency of the gage to reduce between-operator variation
  4. Redesign the measurement fixture to eliminate operator-dependent positioning errors
Show answer & explanation

Correct answer: B - Standardize operator techniques and provide training on the measurement method

Domain 5: Continuous Improvement

Question 7

A machine has Availability = 90%, Performance = 95%, and Quality = 99%. The Overall Equipment Effectiveness (OEE) is:

  1. 94.7%
  2. 84.6%
  3. 85.0%
  4. 94.0%
Show answer & explanation

Correct answer: B - 84.6%

Domain 6: Quantitative Methods and Tools

Question 8

A process has USL = 10.0, LSL = 6.0, X̄ = 8.5, and σ̂ = 0.5. What is Cpk?

  1. 1.00
  2. 1.33
  3. 1.67
  4. 0.67
Show answer & explanation

Correct answer: A - 1.00

Question 9

A study with a very large sample size finds a statistically significant difference of 0.001 mm between two machines. The tolerance is ±0.5 mm. This result is:

  1. Both statistically and practically significant
  2. Statistically significant but likely NOT practically significant
  3. Practically significant but not statistically significant
  4. Neither statistically nor practically significant
Show answer & explanation

Correct answer: B - Statistically significant but likely NOT practically significant

Domain 7: Risk Management

Question 10

A company outsources a manufacturing process to a contract manufacturer to reduce operational risk. However, this creates a new risk of supply chain dependency. This new risk is a:

  1. Residual risk remaining after the treatment
  2. Secondary risk created by the treatment
  3. Strategic risk unrelated to the treatment
  4. Inherent risk present before the treatment
Show answer & explanation

Correct answer: B - Secondary risk created by the treatment

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