Industrial 3D Printing Technician
Questions And Correct Answers
(Verified Answers) Plus Rationales 2026
Q&A Instant Download Pdf
1. What is the primary purpose of additive manufacturing (AM)?
A. Removing material from a solid block
B. Building parts layer by layer from digital data
C. Joining two finished components
D. Casting metal into permanent molds
Rationale: Additive manufacturing creates components by depositing, curing, or
consolidating material layer by layer according to digital geometry.
2. Which file format is traditionally associated with transferring a 3D model to
many additive manufacturing systems?
A. DOCX
B. XLSX
C. STL
D. TXT
Rationale: STL represents a 3D surface using triangular facets and has
historically been widely used for AM preparation.
3. What does CAD stand for?
A. Computerized Assembly Design
B. Computer-Aided Design
,C. Controlled Additive Development
D. Computer Automated Deposition
Rationale: CAD software is used to create and modify digital engineering models
that can be prepared for manufacturing.
4. Which process uses a vat of liquid photopolymer resin?
A. FDM
B. SLS
C. Vat photopolymerization
D. Material extrusion
Rationale: Vat photopolymerization selectively cures liquid resin using light,
commonly ultraviolet radiation.
5. In fused filament fabrication, what happens to the feedstock?
A. It is evaporated
B. It is chemically dissolved
C. It is heated and extruded through a nozzle
D. It is cast into a mold
Rationale: FFF/FDM systems melt or soften thermoplastic filament and deposit
it through a controlled nozzle.
6. What is a major advantage of additive manufacturing?
A. It always has the lowest material cost
B. It can produce complex geometries that are difficult to manufacture
conventionally
C. It eliminates all post-processing
D. It requires no digital model
Rationale: AM enables complex internal channels, lattice structures, topology-
optimized forms, and other geometries that can be difficult with subtractive
methods.
, 7. What does layer height primarily affect?
A. Electrical voltage
B. Vertical resolution and build time
C. Filament diameter only
D. Powder color
Rationale: Smaller layer heights can improve vertical detail and surface finish
but generally increase build time.
8. What is infill?
A. Surface polishing material
B. Internal material structure used to occupy part of a component's volume
C. Build chamber insulation
D. Support removal chemical
Rationale: Infill patterns and density determine how much of the interior is filled
and influence weight, strength, and print time.
9. Why are support structures commonly used?
A. To increase machine voltage
B. To support overhangs and geometries that cannot be printed reliably without
temporary material
C. To reduce file size
D. To measure humidity
Rationale: Supports provide temporary physical backing for overhangs, bridges,
and other unsupported features.
10.Which factor is especially important when printing moisture-sensitive
polymer filament?
A. Room lighting
B. Material drying and humidity control
C. Printer color
D. Screen brightness
Questions And Correct Answers
(Verified Answers) Plus Rationales 2026
Q&A Instant Download Pdf
1. What is the primary purpose of additive manufacturing (AM)?
A. Removing material from a solid block
B. Building parts layer by layer from digital data
C. Joining two finished components
D. Casting metal into permanent molds
Rationale: Additive manufacturing creates components by depositing, curing, or
consolidating material layer by layer according to digital geometry.
2. Which file format is traditionally associated with transferring a 3D model to
many additive manufacturing systems?
A. DOCX
B. XLSX
C. STL
D. TXT
Rationale: STL represents a 3D surface using triangular facets and has
historically been widely used for AM preparation.
3. What does CAD stand for?
A. Computerized Assembly Design
B. Computer-Aided Design
,C. Controlled Additive Development
D. Computer Automated Deposition
Rationale: CAD software is used to create and modify digital engineering models
that can be prepared for manufacturing.
4. Which process uses a vat of liquid photopolymer resin?
A. FDM
B. SLS
C. Vat photopolymerization
D. Material extrusion
Rationale: Vat photopolymerization selectively cures liquid resin using light,
commonly ultraviolet radiation.
5. In fused filament fabrication, what happens to the feedstock?
A. It is evaporated
B. It is chemically dissolved
C. It is heated and extruded through a nozzle
D. It is cast into a mold
Rationale: FFF/FDM systems melt or soften thermoplastic filament and deposit
it through a controlled nozzle.
6. What is a major advantage of additive manufacturing?
A. It always has the lowest material cost
B. It can produce complex geometries that are difficult to manufacture
conventionally
C. It eliminates all post-processing
D. It requires no digital model
Rationale: AM enables complex internal channels, lattice structures, topology-
optimized forms, and other geometries that can be difficult with subtractive
methods.
, 7. What does layer height primarily affect?
A. Electrical voltage
B. Vertical resolution and build time
C. Filament diameter only
D. Powder color
Rationale: Smaller layer heights can improve vertical detail and surface finish
but generally increase build time.
8. What is infill?
A. Surface polishing material
B. Internal material structure used to occupy part of a component's volume
C. Build chamber insulation
D. Support removal chemical
Rationale: Infill patterns and density determine how much of the interior is filled
and influence weight, strength, and print time.
9. Why are support structures commonly used?
A. To increase machine voltage
B. To support overhangs and geometries that cannot be printed reliably without
temporary material
C. To reduce file size
D. To measure humidity
Rationale: Supports provide temporary physical backing for overhangs, bridges,
and other unsupported features.
10.Which factor is especially important when printing moisture-sensitive
polymer filament?
A. Room lighting
B. Material drying and humidity control
C. Printer color
D. Screen brightness
