TEXAS QUALITY CONTROL TECHNICIAN
CERTIFICATION EXAM WITH ACTUAL
QUESTIONS AND VERIFIED ANSWERS,
PLUS EXPLAINED RATIONALES/EXPERT
VERIFIED FOR GUARANTEED 100% PASS
2026/LATEST UPDATE/INSTANT
DOWNLOAD PDF
1. A Quality Control (QC) Technician at a Texas manufacturing
facility receives a batch of machined shafts with a specified
diameter of 25.00 ± 0.05 mm. Which measured shaft diameter
should be rejected?
A. 24.97 mm
B. 25.02 mm
C. 25.05 mm
D. 25.06 mm
Answer: D. 25.06 mm
Rationale: The acceptable tolerance range is 24.95 mm to 25.05 mm.
A measurement of 25.06 mm exceeds the upper specification limit
(USL) and must be rejected.
2. What is the primary purpose of quality control in manufacturing?
A. Increase production speed
B. Reduce employee training
C. Ensure products consistently meet specifications
D. Eliminate customer feedback
1
,Answer: C. Ensure products consistently meet specifications
Rationale: Quality control focuses on inspecting and testing
products to verify compliance with established standards before
delivery to customers.
3. Which measuring instrument provides the greatest precision for
measuring a 12.500 mm pin?
A. Steel ruler
B. Tape measure
C. Micrometer
D. Yardstick
Answer: C. Micrometer
Rationale: Micrometers typically measure with resolutions of 0.001
mm or 0.0001 inch, making them significantly more accurate than
rulers or tape measures.
4. Which ISO standard primarily establishes requirements for Quality
Management Systems?
A. ISO 9001
B. ISO 14001
C. ISO 45001
D. ISO 31000
Answer: A. ISO 9001
2
,Rationale: ISO 9001 is the internationally recognized Quality
Management System standard emphasizing customer satisfaction,
continual improvement, and process consistency.
5. What does the abbreviation SPC represent?
A. Statistical Process Control
B. Standard Product Certification
C. System Production Calculation
D. Statistical Product Certification
Answer: A. Statistical Process Control
Rationale: SPC uses statistical methods to monitor and control
manufacturing processes before defects occur.
6. During inspection, a technician discovers a recurring defect every
100 parts. Which quality tool is most appropriate for identifying
possible root causes?
A. Fishbone Diagram
B. Histogram
C. Scatter Diagram
D. Check Sheet
Answer: A. Fishbone Diagram
Rationale: The Fishbone (Ishikawa) Diagram systematically
organizes potential causes under categories such as Methods,
Materials, Machines, Manpower, Measurement, and Environment.
3
, 7. The difference between the upper specification limit and lower
specification limit is called:
A. Process average
B. Tolerance
C. Sampling interval
D. Standard deviation
Answer: B. Tolerance
Rationale: Tolerance defines the allowable dimensional variation
established by engineering specifications.
8. Which control chart is most appropriate for monitoring variable
data collected in subgroups?
A. p-chart
B. c-chart
C. X̄-R chart
D. np-chart
Answer: C. X̄-R chart
Rationale: The X̄-R chart monitors process averages and ranges
when measurements are continuous variables.
9. What is the primary purpose of calibration?
A. Speed inspection
B. Improve packaging
C. Verify measurement accuracy
4
CERTIFICATION EXAM WITH ACTUAL
QUESTIONS AND VERIFIED ANSWERS,
PLUS EXPLAINED RATIONALES/EXPERT
VERIFIED FOR GUARANTEED 100% PASS
2026/LATEST UPDATE/INSTANT
DOWNLOAD PDF
1. A Quality Control (QC) Technician at a Texas manufacturing
facility receives a batch of machined shafts with a specified
diameter of 25.00 ± 0.05 mm. Which measured shaft diameter
should be rejected?
A. 24.97 mm
B. 25.02 mm
C. 25.05 mm
D. 25.06 mm
Answer: D. 25.06 mm
Rationale: The acceptable tolerance range is 24.95 mm to 25.05 mm.
A measurement of 25.06 mm exceeds the upper specification limit
(USL) and must be rejected.
2. What is the primary purpose of quality control in manufacturing?
A. Increase production speed
B. Reduce employee training
C. Ensure products consistently meet specifications
D. Eliminate customer feedback
1
,Answer: C. Ensure products consistently meet specifications
Rationale: Quality control focuses on inspecting and testing
products to verify compliance with established standards before
delivery to customers.
3. Which measuring instrument provides the greatest precision for
measuring a 12.500 mm pin?
A. Steel ruler
B. Tape measure
C. Micrometer
D. Yardstick
Answer: C. Micrometer
Rationale: Micrometers typically measure with resolutions of 0.001
mm or 0.0001 inch, making them significantly more accurate than
rulers or tape measures.
4. Which ISO standard primarily establishes requirements for Quality
Management Systems?
A. ISO 9001
B. ISO 14001
C. ISO 45001
D. ISO 31000
Answer: A. ISO 9001
2
,Rationale: ISO 9001 is the internationally recognized Quality
Management System standard emphasizing customer satisfaction,
continual improvement, and process consistency.
5. What does the abbreviation SPC represent?
A. Statistical Process Control
B. Standard Product Certification
C. System Production Calculation
D. Statistical Product Certification
Answer: A. Statistical Process Control
Rationale: SPC uses statistical methods to monitor and control
manufacturing processes before defects occur.
6. During inspection, a technician discovers a recurring defect every
100 parts. Which quality tool is most appropriate for identifying
possible root causes?
A. Fishbone Diagram
B. Histogram
C. Scatter Diagram
D. Check Sheet
Answer: A. Fishbone Diagram
Rationale: The Fishbone (Ishikawa) Diagram systematically
organizes potential causes under categories such as Methods,
Materials, Machines, Manpower, Measurement, and Environment.
3
, 7. The difference between the upper specification limit and lower
specification limit is called:
A. Process average
B. Tolerance
C. Sampling interval
D. Standard deviation
Answer: B. Tolerance
Rationale: Tolerance defines the allowable dimensional variation
established by engineering specifications.
8. Which control chart is most appropriate for monitoring variable
data collected in subgroups?
A. p-chart
B. c-chart
C. X̄-R chart
D. np-chart
Answer: C. X̄-R chart
Rationale: The X̄-R chart monitors process averages and ranges
when measurements are continuous variables.
9. What is the primary purpose of calibration?
A. Speed inspection
B. Improve packaging
C. Verify measurement accuracy
4
