Revision 1

What property allows a material to return to its original shape after being deformed?

• Plasticity

• Elasticity

• Hardness

• Malleability

Hardness of a material can be defined as its ability to resist:

• Electricity

• Compression

• Wear or abrasion

• Heat

Which method is used to case harden low carbon steel?

• Quenching in oil

• Heating the metal until cherry red

• Adding a protective coating

• Cooling in a saline solution

Explain the difference between a composite material and a metal alloy:

• Composites are only made of metals

• Alloys are mixed at an atomic level

• Composites cannot be mechanically recycled

• Alloys have lower melting points

How is electricity conducted by a semiconductor material?

• Free neutrons

• Doping with impurities

• High electron mobility alone

• The complete absence of valence electrons

Describe the common structure for a large transformer's core:

• Solid iron block

• Hollow square form or shell type

• Single layer of copper wire

• Circular steel bands

Kanban in production helps primarily to reduce:

• Energy consumption

• Time for training

• Scrap and overproduction

• The need for skilled labour

Which material would be appropriate for an electric kettle body due to its low thermal conductivity?

• Copper

• Stainless steel

• Aluminium

• Thermosetting plastic

What is the primary use of a systems diagram?

• Analyse the financial performance

• Show the physical elements of a system

• List the potential market competitors

• Describe the company’s organisational structure

What is a limitation of making a functional prototype?

• It does not allow for aesthetic evaluation

• It requires a large team of designers

• It can be costly due to materials and time

• Prototypes always function identically to the final product