3D printing

The following are true related to manufacturing, except?

• A process of transforming raw materials or parts into finishing goods through manual, use of tools, machinery, and chemical process

• Observing and analyzing polycarbonate degeneration at high temperature

• Process of refining crude oil into RON95 petrol is an example of manufacturing process

• Making a 3D printer to be sell by salesman

3D printing is also known as,

• a subtractive manufacturing

• an additive manufacturing

• a mixed manufacturing

• a milling machine

What is Fuse deposition modelling (FDM)?

• works on an additive principle by laying down material in layers; a plastic filament or metal wire is unwound from a coil and supplies material to produce a part

• works on an additive principle by laying down material in layers and solidifying them: a laser beam is moved over the top surface of liquid of powder materials, irradiating some parts of it, causing the solidification

• works on a subtractive principle by removing material in layer by layer: a water jet is used to cut material as virtually design in software environment

• the only method used in 3D printer technology

The following are the main components of FDM 3D printer, except

• Extruder

• Controller board and control panel

• Drill bits and coolant

• Build plate

The following are types of materials generally used in FDM 3D printers, except?

• Polylactic Acid

• Polycarbonate

• High Density Polyethylene

• Pure silicon

What is the heating temperature for melting Polylactic acid (PLA) filament by the extruder in FDM 3D printer

• Around 130°C

• Around 180°C

• Around 250°C

• Around 300°C

Which of the following are the process flow in 3D printing, except?

• Conceptual ideas –> virtual design –> part fabrication: fuse deposition modelling

• Conceptual ideas –> virtual design –> part fabrication: polyjet

• Conceptual ideas –> virtual design –> part fabrication: selective laser sintering

• Conceptual ideas –> virtual design –> part fabrication: electrical discharge machining

Which of the following is the software the is used for slicing the 3D design model and generating .gcode file?

• TinkerCad

• AutoCAD

• Solidworks

• Ultimaker Cura

The following are the common file format that used in 3D printing, except.

• .stl

• .obj

• .jpg

• .gcode

What are among the post-processing processes on printed part right after 3D printing?

 

                           i.          polishing using appropriate sanding paper

                          ii.          Electroplating

                         iii.          Acetone smoothing

                         iv.          Painting/spraying

                          v.          Friction welding part using filament

                         vi.          Casting

• All above

• i, ii, iii

• iii,iv

• ii, v