Certified Tool and Die Maker Journeyman Exam
questions and Correct Answers (Verified Answers)
Plus Rationales Q&A | Instant Download Pdf
1. What is the primary purpose of a micrometer?
A. Measure large distances
B. Measure internal angles
C. Measure small dimensions accurately
D. Measure surface roughness
Rationale: A micrometer is designed for high-precision measurement of
very small dimensions.
Answer: C
2. Which steel is most commonly used for punches and dies?
A. Mild steel
B. High-carbon tool steel
C. Cast iron
D. Aluminum
,Rationale: High-carbon tool steels provide hardness and wear resistance
required for tooling.
Answer: B
3. What does “tolerance” refer to in machining?
A. Tool wear rate
B. Allowed variation in dimension
C. Cutting speed
D. Material hardness
Rationale: Tolerance defines the acceptable deviation from a specified
dimension.
Answer: B
4. Which tool is used to check flatness of a surface plate?
A. Caliper
B. Straightedge and feeler gauge
C. Protractor
D. Micrometer
,Rationale: Flatness is verified using straightedges and feeler gauges for
gaps.
Answer: B
5. What is the purpose of heat treating steel?
A. Increase weight
B. Improve machinability only
C. Change hardness and mechanical properties
D. Improve color finish
Rationale: Heat treatment modifies hardness, strength, and toughness.
Answer: C
6. Which process removes burrs from machined parts?
A. Annealing
B. Deburring
C. Tempering
D. Casting
Rationale: Deburring removes sharp edges and imperfections after
machining.
Answer: B
, 7. What is the function of a die set?
A. Store tools
B. Align punch and die accurately
C. Cool metal
D. Measure stock thickness
Rationale: Die sets maintain alignment between punch and die
components.
Answer: B
8. Which measuring tool reads in thousandths of an inch?
A. Steel rule
B. Caliper
C. Micrometer
D. Tape measure
Rationale: Micrometers provide readings to 0.001 inch accuracy.
Answer: C
9. What is “kerf” in cutting operations?
questions and Correct Answers (Verified Answers)
Plus Rationales Q&A | Instant Download Pdf
1. What is the primary purpose of a micrometer?
A. Measure large distances
B. Measure internal angles
C. Measure small dimensions accurately
D. Measure surface roughness
Rationale: A micrometer is designed for high-precision measurement of
very small dimensions.
Answer: C
2. Which steel is most commonly used for punches and dies?
A. Mild steel
B. High-carbon tool steel
C. Cast iron
D. Aluminum
,Rationale: High-carbon tool steels provide hardness and wear resistance
required for tooling.
Answer: B
3. What does “tolerance” refer to in machining?
A. Tool wear rate
B. Allowed variation in dimension
C. Cutting speed
D. Material hardness
Rationale: Tolerance defines the acceptable deviation from a specified
dimension.
Answer: B
4. Which tool is used to check flatness of a surface plate?
A. Caliper
B. Straightedge and feeler gauge
C. Protractor
D. Micrometer
,Rationale: Flatness is verified using straightedges and feeler gauges for
gaps.
Answer: B
5. What is the purpose of heat treating steel?
A. Increase weight
B. Improve machinability only
C. Change hardness and mechanical properties
D. Improve color finish
Rationale: Heat treatment modifies hardness, strength, and toughness.
Answer: C
6. Which process removes burrs from machined parts?
A. Annealing
B. Deburring
C. Tempering
D. Casting
Rationale: Deburring removes sharp edges and imperfections after
machining.
Answer: B
, 7. What is the function of a die set?
A. Store tools
B. Align punch and die accurately
C. Cool metal
D. Measure stock thickness
Rationale: Die sets maintain alignment between punch and die
components.
Answer: B
8. Which measuring tool reads in thousandths of an inch?
A. Steel rule
B. Caliper
C. Micrometer
D. Tape measure
Rationale: Micrometers provide readings to 0.001 inch accuracy.
Answer: C
9. What is “kerf” in cutting operations?
