Gujarat Technological UniversitySummer 2026 examination

GTU 3171926 Rapid Prototyping Summer 2026 Question Paper & PDF

B.E. · Mechanical Engineering · Semester 7 · Subject code 3171926
Download official PDFView PDF here
Share with your class
Total
70 marks
To pass
23 marks (33%)
Duration
2.5 Hours 2:30 PM – 5:00 PM
Questions
5 with internal choice
No solutions on this paper yetNeed them for your exam? Ask once. Papers that students ask for are solved first, and we aim to add them within 24 hours.

Q.1

14 Marks
(a)
3 marks
Compare rapid prototyping (RP) with traditional prototyping method. 03 CO1 U
(b)
4 marks

What are the main roles of the prototypes? How rapid prototyping satisfies these roles? 04 CO1 R

(c)
7 marks

Differentiate additive and subtractive manufacturing? Explain the generic additive manufacturing process with neat sketch. 07 CO1 A

Q.2

14 Marks
(a)
3 marks
What causes missing facets or gaps to occur in STL file? 03 CO2 U
(b)
4 marks

List various formats used by RP systems for data interfacing. Describe the STL format with an example. 04 CO2 U

(c)
7 marks

Discuss the use of support structure. How part orientation affects requirement for support structure? 07 CO2 U

(c)
7 marks
Discuss the direct and adaptive slicing. 07 CO2 U

Q.3

14 Marks
(a)
3 marks

Define the following terms • Layer thickness • Staircase effect • Infill density 03 CO2 R

(b)
4 marks
Define & classify Rapid Tooling. 04 CO4 U
(c)
7 marks
Explain Stereolithography (SLA) process with neat sketch. 07 CO3 U
(a)
3 marks
Define the following terms • Chord Height • Angle Control • Step Size 03 CO2 R
(b)
4 marks
Explain any one method of Direct Tooling. 04 CO4 U
(c)
7 marks
Explain Fused Deposition Modelling (FDM) process with neat sketch. 07 CO3 U

Q.4

14 Marks
(a)
3 marks
What are the different errors in processing part through rapid prototyping. 03 CO2 R
(b)
4 marks
Enlist the applications for Direct Metal Deposition (DMD) process. 04 CO3 R
(c)
7 marks
Explain 3D printing process with neat sketch. 07 CO3 U
(a)
3 marks
What are the various post-processing errors occurring in RP methods. 03 CO2 R
(b)
4 marks

Enlist the advantages and limitation for Laminated object manufacturing (LOM) process. 04 CO3 R

(c)
7 marks
Explain Selective Laser Sintering (SLS) process with neat sketch. 07 CO3 U

Q.5

14 Marks
(a)
3 marks
What are the typical RP applications in design? 03 CO5 R
(b)
4 marks
Define reverse engineering. Enlist various steps of reverse engineering. 04 CO5 R
(c)
7 marks
Explain Laser Engineered Net Shaping (LENS) process with neat sketch. 07 CO3 U
(a)
3 marks
What are the typical RP applications in engineering and analysis? 03 CO5 R
(b)
4 marks

How are data points acquired in reverse engineering? Enlist various methods. 04 CO5 R

(c)
7 marks
Explain Electron Beam Melting (EBM) process with neat sketch. 07 CO3 U

Other Semester 7 subjects

BE Mechanical

2171901
Operation Research
2171903
Computer Aided Manufacturing
2171909
Machine Design
2171910
Power Plant Engineering

Preparing with friends?

Send this paper to your class group. Every question has its own link.

About this paper

Official Gujarat Technological University (GTU) examination paper for Rapid Prototyping (Summer 2026, B.E. · Mechanical Engineering, Sem 7). Features complete 70-mark regular & remedial examination pattern, official marking distribution across all 5 questions, and direct 1-click official PDF download.

Transcribed for student exam preparation from Gujarat Technological University official examination archives. Questions, syllabus guidelines, and curriculum marking schemes remain the intellectual property of Gujarat Technological University.

Download official PDF All Rapid Prototyping Papers (1) →Report a typo or correction
ViewDownload PDF