1. Current 3d printing technology _____________.

2. Which of the following base materials does Laminated Object Manufacturing use?

3. Which of the following are correct about Digital Light Processing (DLP)?

4. Which of the following options is/are true about Stereolithography (SLA)?

5. Which two of the following are the features of the PolyJet technology?

6. Which two of the following are the advantages of inkjet 3D printing?

7. Which of following can be used to create laminated objects in Laminated Object Manufacturing?

8. How many materials can an Object 30 Pro 3D printer print at a time?

9. Which of the following is used as a support material in inkjet 3D printing?

10. Which of the following is NOT an advantage of 3D printing?

11. Which of the following is correct about PolyJet technology or Objet Connex printers? I. These printers use one photopolymeric material at a time. ll. These printers print two different materials at a time.

12. What do power binding printers use to apply a rapidly-solidified binder to the powder bed in order to create new solid objects?

13. Which of the following are used in a PolyJet 3D printer?

14. Which of the following points of difference between subtractive manufacturing and additive manufacturing are true? I. Additive manufacturing is better for complex geometries as compared to subtractive manufacturing. ll. Additive manufacturing can be used for wood and foam, but subtractive manufacturing cannot. lll. If larger quantities of a part are required. additive manufacturing is preferred over subtractive manufacturing.

15. The Fused Deposition Modeling method of printing requires pressure and temperature.

16. Which of the following is/are INCORRECT with respect to Object 3D Pro 3D printers? I. The model grows inside a gel-like support material. II. The printer software selects the optimal orientation for slicing and building. I”. The layer thickness of the printer is less than 12 microns.

17. For which of the following processes can titanium be used in 3D printing? 1. Sintering 2. Melting 3. Electron Beam Melting

18. Which of the following is/are NOT (an) advantage(s) of laser melting?

19. Which of the following statements is NOT true about Objet's PolyJet system?

20. In which of the following processes is a plastic filament melted and then deposited. one layer at a time onto a build platform via a heated extruder?

21. Gold and silver are mostly processed in the form in 3D printing.

22. Which is the slowest process among the following?

23. Which of the two techniques given below is faster, more flexible and less inexpensive than the other technique for producing small quantities of 3D parts?

24. What process is shown in the given image?

25. Which additive manufacturing technique do the following statements refer to? This technique creates an object, layer by layer, by extruding a f‌ilament of ink from a nozzle. It produces fragile and non-dense ceramic 3D products.

26. The properties given below refer to which material? It is a biodegradable plastic material. It can be used for DLP/SL processes in resin format. It is not the most durable or flexible plastic.

27. Which of the following BD printing technologies uses plaster as production material?

28. Working of which of the following processes is illustrated in the given image?

29. Which file format serves as the standard data interface between 3D printing machines and CAD software?

30. In the laser sintering process, the build chamber used is.

31. Which of the following types of light sources is/are used by Digital Light Processing (DLP)?

32. In PolyJet 3D printing, paper is used as support material. True or false?

33. Which of the following is NOT a rigid opaque material used by Object 3D Pro 3D printers?

34. Which of the following types of material does the material jetting technology use?

35. Stereolithography, a. It is the process of transforming solid plastic into liquid form. b. It makes use of UV rays. c. It makes use of a movable platform.

36. Which of the following is NOT true about the advantages of Laminated Object Manufacturing (LOM)?

37. Certain food products, such as chocolates, can be 3D printed. True or false?

38. a. Additive fabrication is faster than injection molding. b. In the manufacturing of large quantities of polymer products. additive manufacturing is less expensive than injection molding.

39. In which type of 3D printing is melted thermoplastic squeezed through a small object for creating an object?

40. The 3D printing material alumide is a combination of powdered aluminum and.

41. The binding material used in inkjet 3D printing is in the form.