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Manufacturing Materials and Their Forms

Total questions: 20

Worksheet time: 10mins

Name
Class
Date
1.

What best describes an engineering material?

a)

Any material found in nature

b)

Materials used only in machines

c)

Materials used in engineering applications

d)

Only metallic materials

2.

Which of the following is an example of an engineering application?

a)

A leaf

b)

A light bulb

c)

Rainwater

d)

Soil

3.

Which of the following is NOT a main class of engineering materials?

a)

Metals

b)

Polymers

c)

Ceramics

d)

Lubricants

4.

Which material class is most commonly used for high-temperature structural applications?

a)

Polymers

b)

Ceramics

c)

Elastomers

d)

Foams

5.

A metal product with thickness less than 0.2 mm is called:

a)

Plate

b)

Sheet

c)

Foil

d)

Billet

6.

Which of the following is a common standard form of plastics?

a)

Bars

b)

Sheets

c)

Pellets

d)

Plates

7.

Powders are commonly used as starting forms for which materials?

a)

Metals only

b)

Plastics only

c)

Ceramics and composites

d)

Elastomers

8.

Which of the following is NOT a typical material selection criterion?

a)

Performance requirements

b)

Colour preference of the engineer

c)

Cost of production

d)

Compatibility with manufacturing processes

9.

For a bicycle frame, which property is MOST critical for performance?

a)

Electrical conductivity

b)

Weight

c)

Optical transparency

d)

Thermal insulation

10.

Why is tungsten suitable for an incandescent light bulb filament?

a)

Low melting point

b)

High oxidation rate

c)

High melting point

d)

Low electrical resistance

11.

Plastic lunch boxes are commonly manufactured using:

a)

Machining

b)

Forging

c)

Injection moulding

d)

Casting

12.

Gear wheels are typically manufactured using which process?

a)

Blow moulding

b)

Machining

c)

Extrusion

d)

Sintering

13.

Why is a knife blade quenched after forging?

a)

To reduce cost

b)

To improve hardness

c)

To improve ductility

d)

To improve ductility

14.

Failure that occurs due to repeated cyclic loading is called:

a)

Creep failure

b)

Brittle fracture

c)

Fatigue failure

d)

Wear

15.

Which of the following is an environmental degradation mechanism?

a)

Ductile fracture

b)

Corrosion

c)

Residual stress failure

d)

Thermal cracking

16.

Approximately what fraction of manufacturing cost is due to materials?

a)

10%

b)

25%

c)

50%

d)

80%

17.

Which cost component includes cutting tools and moulds?

a)

Labour

b)

Capital

c)

Tooling

d)

Fixed costs

18.

Materials that can return to their original shape after deformation are called:

a)

Nanomaterials

b)

Composites

c)

Shape memory alloys

d)

Bioceramics

19.

Which future material trend is MOST relevant for medical implants?

a)

Biocompatible materials

b)

Shape memory alloys

c)

Nanomaterials

d)

Structural steels

20.

Which material property is MOST important when selecting a material for a high-speed rotating shaft?

a)

Electrical conductivity

b)

Fatigue strength

c)

Density

d)

Optical transparency