Certified Tool and Die Maker Journeyman
Practice Exam Questions With Correct Answers
(Verified Answers) Plus Rationales 2026 Q&A |
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1. Which tool is primarily used to check the flatness of a surface?
a) Calipers
b) Micrometer
c) Surface plate
d) Dial indicator
Rationale: A surface plate provides a highly accurate reference plane
for measuring flatness and squareness. While calipers and
micrometers measure dimensions, they cannot serve as a flat
reference.
2. What is the standard tolerance for a precision hole diameter in a
die set?
a) ±0.010 inch
b) ±0.001 inch
, c) ±0.005 inch
d) ±0.100 inch
Rationale: Precision die work often requires very tight tolerances,
commonly around ±0.001 inch, to ensure proper fit of mating
components.
3. Which process is used to remove small amounts of material for
finishing a die cavity?
a) Milling
b) Drilling
c) Grinding
d) Broaching
Rationale: Grinding allows for extremely fine material removal and
surface finishing, which is crucial in die and mold work.
4. When setting up a milling machine for angular cuts, which tool is
essential?
a) Dial indicator
b) End mill
c) Angle plate
d) Scriber
Rationale: An angle plate holds the workpiece at a precise angle
relative to the milling cutter, ensuring accurate angular cuts.
, 5. What type of steel is typically used for cutting dies that require
high hardness and wear resistance?
a) Carbon steel
b) Stainless steel
c) Tool steel
d) Alloy steel
Rationale: Tool steels are formulated for hardness, toughness, and
wear resistance, making them ideal for cutting dies.
6. Which measuring instrument is best for checking the concentricity
of a round part?
a) Vernier caliper
b) Micrometer
c) Dial indicator on a test stand
d) Height gauge
Rationale: A dial indicator on a test stand can detect small deviations
in concentricity when the part is rotated, offering precise
measurement.
7. What is the main purpose of heat treating a die?
a) To increase electrical conductivity
b) To improve appearance
, c) To increase hardness and strength
d) To reduce weight
Rationale: Heat treatment alters the microstructure of tool steel,
increasing hardness and wear resistance, which is critical for die
longevity.
8. What type of fit is commonly used for locating pins in die
assemblies?
a) Clearance fit
b) Interference fit
c) Loose fit
d) Sliding fit
Rationale: Interference fits hold locating pins firmly in place to ensure
accurate die alignment during repeated use.
9. Which tool is used to check the angle of a machined surface?
a) Surface gauge
b) Vernier caliper
c) Bevel protractor
d) Radius gauge
Rationale: A bevel protractor measures angles accurately, which is
essential when verifying angular surfaces in dies.
Practice Exam Questions With Correct Answers
(Verified Answers) Plus Rationales 2026 Q&A |
Instant Download Pdf
1. Which tool is primarily used to check the flatness of a surface?
a) Calipers
b) Micrometer
c) Surface plate
d) Dial indicator
Rationale: A surface plate provides a highly accurate reference plane
for measuring flatness and squareness. While calipers and
micrometers measure dimensions, they cannot serve as a flat
reference.
2. What is the standard tolerance for a precision hole diameter in a
die set?
a) ±0.010 inch
b) ±0.001 inch
, c) ±0.005 inch
d) ±0.100 inch
Rationale: Precision die work often requires very tight tolerances,
commonly around ±0.001 inch, to ensure proper fit of mating
components.
3. Which process is used to remove small amounts of material for
finishing a die cavity?
a) Milling
b) Drilling
c) Grinding
d) Broaching
Rationale: Grinding allows for extremely fine material removal and
surface finishing, which is crucial in die and mold work.
4. When setting up a milling machine for angular cuts, which tool is
essential?
a) Dial indicator
b) End mill
c) Angle plate
d) Scriber
Rationale: An angle plate holds the workpiece at a precise angle
relative to the milling cutter, ensuring accurate angular cuts.
, 5. What type of steel is typically used for cutting dies that require
high hardness and wear resistance?
a) Carbon steel
b) Stainless steel
c) Tool steel
d) Alloy steel
Rationale: Tool steels are formulated for hardness, toughness, and
wear resistance, making them ideal for cutting dies.
6. Which measuring instrument is best for checking the concentricity
of a round part?
a) Vernier caliper
b) Micrometer
c) Dial indicator on a test stand
d) Height gauge
Rationale: A dial indicator on a test stand can detect small deviations
in concentricity when the part is rotated, offering precise
measurement.
7. What is the main purpose of heat treating a die?
a) To increase electrical conductivity
b) To improve appearance
, c) To increase hardness and strength
d) To reduce weight
Rationale: Heat treatment alters the microstructure of tool steel,
increasing hardness and wear resistance, which is critical for die
longevity.
8. What type of fit is commonly used for locating pins in die
assemblies?
a) Clearance fit
b) Interference fit
c) Loose fit
d) Sliding fit
Rationale: Interference fits hold locating pins firmly in place to ensure
accurate die alignment during repeated use.
9. Which tool is used to check the angle of a machined surface?
a) Surface gauge
b) Vernier caliper
c) Bevel protractor
d) Radius gauge
Rationale: A bevel protractor measures angles accurately, which is
essential when verifying angular surfaces in dies.
