1st term C.A.T 21st century

3D printers creates objects by building them up __________.

• Part by part

• Step by step

• Layer by layer

• Up and down

The material commonly used for 3D printing is ___________.

• glass

• plastic

• Clay

• ceramic

The first process in printing 3D objects is to _______.

• create a model

• Send model to printer

• Convert model to file

• Print model

Which of these is not an information sent through fibre optics?

• Sounds

• Pictures

• Computer codes

• Fibres

In a fibre-optic system, a machine called _________ turns information into light.

• transformer

• transcriber

• transmitter

• transporter

All of these can be made using 3D printing except _________.

• hearing aid

• False teeth

• Prosthetics

• Texts on paper

What are prototypes?

• Toy version of things

• Sample version of a product

• Best version of a product

• None of the option

The inner part of a fibre optic cable is called ________.

• core

• receiver

• mantle

• optic

At the end of each fiber, a machine called a _______ accepts the light sent by the transmitter.

• receiver

• mantle

• transmitter

• cladding

Before fibre optics, most cables in computers and wires used to be made of ______.

• plastic

• copper

• aluminium

• brass