Free Printable 3D printing

1.

The following are true related to manufacturing, except?

a)

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

b)

Observing and analyzing polycarbonate degeneration at high temperature

c)

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

d)

Making a 3D printer to be sell by salesman

2.

3D printing is also known as,

a)

a subtractive manufacturing

b)

an additive manufacturing

c)

a mixed manufacturing

d)

a milling machine

3.

What is Fuse deposition modelling (FDM)?

a)

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

b)

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

c)

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

d)

the only method used in 3D printer technology

4.

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

a)

Extruder

b)

Controller board and control panel

c)

Drill bits and coolant

d)

Build plate

5.

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

a)

Polylactic Acid

b)

Polycarbonate

c)

High Density Polyethylene

d)

Pure silicon

6.

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

a)

Around 130°C

b)

Around 180°C

c)

Around 250°C

d)

Around 300°C

7.

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

a)

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

b)

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

c)

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

d)

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

8.

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

a)

TinkerCad

b)

AutoCAD

c)

Solidworks

d)

Ultimaker Cura

9.

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

a)

.stl

b)

.obj

c)

.jpg

d)

.gcode

10.

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

a)

All above

b)

i, ii, iii

c)

iii,iv

d)

ii, v

3D printing

Total questions: 10

Worksheet time: 3hrs 30mins

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