Additive Manufacturing Technician
Level II Practice Exam Questions And
Correct Answers (Verified Answers) Plus
Rationales 2026 Q&A Instant Download
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1. Which process is most commonly associated with powder bed fusion?
A. CNC milling
B. Stereolithography
C. Selective Laser Melting
D. Injection molding
Answer: C
Rationale: Powder bed fusion systems such as Selective Laser Melting use
a laser to fuse powdered material layer by layer.
2. What is the primary purpose of support structures in additive
manufacturing?
A. Improve electrical conductivity
B. Reduce material cost
C. Prevent part deformation during printing
D. Increase printer speed
Answer: C
Rationale: Supports stabilize overhangs and prevent collapse or warping
during the build process.
,3. Which material is most commonly used in FDM printing?
A. Photopolymer resin
B. Thermoplastic filament
C. Metal powder
D. Ceramic slurry
Answer: B
Rationale: FDM uses thermoplastic filaments such as PLA, ABS, and PETG.
4. What is the key advantage of additive manufacturing over subtractive
methods?
A. Lower precision
B. Reduced material waste
C. Requires more tooling
D. Higher machining cost
Answer: B
Rationale: Additive manufacturing builds only what is needed, minimizing
waste.
5. Which file format is most commonly used in 3D printing?
A. STL
B. MP4
C. DOCX
D. XLS
Answer: A
Rationale: STL files describe 3D geometry for printing.
6. What does layer height primarily affect?
A. Machine voltage
B. Surface finish and resolution
C. Material color
D. Printer weight
Answer: B
Rationale: Smaller layer heights produce smoother surfaces and higher
resolution.
, 7. Which AM process uses ultraviolet light to cure resin?
A. FDM
B. SLA
C. DED
D. Binder jetting
Answer: B
Rationale: Stereolithography uses UV light to harden liquid resin.
8. What is warping in additive manufacturing?
A. Color fading
B. Electrical failure
C. Part distortion due to uneven cooling
D. Software crash
Answer: C
Rationale: Warping occurs when thermal stresses deform the printed part.
9. Which factor most influences print speed?
A. Layer height and infill
B. Ambient lighting
C. Operator clothing
D. Room temperature only
Answer: A
Rationale: Layer height and infill density directly affect build time.
10.What is infill in 3D printing?
A. Outer shell
B. Internal structure of a part
C. Printer firmware
D. Cooling system
Answer: B
Rationale: Infill is the internal lattice structure that supports the part.
11.Which AM technology is best suited for metal parts?
A. FDM
B. SLA
Level II Practice Exam Questions And
Correct Answers (Verified Answers) Plus
Rationales 2026 Q&A Instant Download
1. Which process is most commonly associated with powder bed fusion?
A. CNC milling
B. Stereolithography
C. Selective Laser Melting
D. Injection molding
Answer: C
Rationale: Powder bed fusion systems such as Selective Laser Melting use
a laser to fuse powdered material layer by layer.
2. What is the primary purpose of support structures in additive
manufacturing?
A. Improve electrical conductivity
B. Reduce material cost
C. Prevent part deformation during printing
D. Increase printer speed
Answer: C
Rationale: Supports stabilize overhangs and prevent collapse or warping
during the build process.
,3. Which material is most commonly used in FDM printing?
A. Photopolymer resin
B. Thermoplastic filament
C. Metal powder
D. Ceramic slurry
Answer: B
Rationale: FDM uses thermoplastic filaments such as PLA, ABS, and PETG.
4. What is the key advantage of additive manufacturing over subtractive
methods?
A. Lower precision
B. Reduced material waste
C. Requires more tooling
D. Higher machining cost
Answer: B
Rationale: Additive manufacturing builds only what is needed, minimizing
waste.
5. Which file format is most commonly used in 3D printing?
A. STL
B. MP4
C. DOCX
D. XLS
Answer: A
Rationale: STL files describe 3D geometry for printing.
6. What does layer height primarily affect?
A. Machine voltage
B. Surface finish and resolution
C. Material color
D. Printer weight
Answer: B
Rationale: Smaller layer heights produce smoother surfaces and higher
resolution.
, 7. Which AM process uses ultraviolet light to cure resin?
A. FDM
B. SLA
C. DED
D. Binder jetting
Answer: B
Rationale: Stereolithography uses UV light to harden liquid resin.
8. What is warping in additive manufacturing?
A. Color fading
B. Electrical failure
C. Part distortion due to uneven cooling
D. Software crash
Answer: C
Rationale: Warping occurs when thermal stresses deform the printed part.
9. Which factor most influences print speed?
A. Layer height and infill
B. Ambient lighting
C. Operator clothing
D. Room temperature only
Answer: A
Rationale: Layer height and infill density directly affect build time.
10.What is infill in 3D printing?
A. Outer shell
B. Internal structure of a part
C. Printer firmware
D. Cooling system
Answer: B
Rationale: Infill is the internal lattice structure that supports the part.
11.Which AM technology is best suited for metal parts?
A. FDM
B. SLA
