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Aluminium & its Alloys Quiz

Total questions: 18

Worksheet time: 9mins

Name
Class
Date
1.

Which element is alloyed with aluminium to create Duralumin?

a)

Copper

b)

Magnesium

c)

Zinc

d)

Silicon

2.

Why is pure aluminium unsuitable for aircraft structural members?

a)

It is too expensive

b)

It is too soft and lacks strength

c)

It is too brittle

d)

It is too heavy

3.

How are wrought aluminium alloys identified?

a)

By a four-digit number

b)

By a letter code

c)

By a three-digit number

d)

By a color code

4.

What is the effect of adding magnesium to aluminium?

a)

Decreases strength and increases weight

b)

Increases melting point and decreases ductility

c)

Decreases weight and increases brittleness

d)

Increases tensile strength and corrosion resistance

5.

What is a disadvantage of 7XXX series aluminium alloys?

a)

Low electrical conductivity

b)

Stress corrosion cracking

c)

Poor machinability

d)

High density

6.

Which property of aluminium makes it a good choice for aircraft skin?

a)

High brittleness

b)

Excellent corrosion resistance

c)

Low melting point

d)

High density

7.

What is the advantage of Alclad over sheet aluminium alloy?

a)

Better color

b)

Lower cost

c)

Higher weight

d)

Increased corrosion resistance

8.

Which series of aluminium alloys is known for better fatigue performance?

a)

2XXX series

b)

3XXX series

c)

6XXX series

d)

5XXX series

9.

What is the primary benefit of adding silicon to aluminium?

a)

Increases brittleness

b)

Decreases corrosion resistance

c)

Increases weight

d)

Reduces melting point

10.

Which element, when alloyed with aluminium, increases its stiffness but also makes it more brittle?

a)

Zinc

b)

Copper

c)

Magnesium

d)

Silicon

11.

What is the primary characteristic of 2XXX series aluminium alloys?

a)

High corrosion resistance

b)

High strength

c)

High ductility

d)

Low density

12.

Which element is commonly added to aluminium to improve its machinability?

a)

Nickel

b)

Lead

c)

Iron

d)

Chromium

13.

What is a common application of 5XXX series aluminium alloys?

a)

Aircraft structures

b)

Electrical wiring

c)

Automotive body panels

d)

Marine environments

14.

What is the main advantage of using 6XXX series aluminium alloys in construction?

a)

Low cost

b)

Good corrosion resistance and medium strength

c)

High thermal conductivity

d)

High density

15.

Which element is primarily responsible for the high strength of 2XXX series aluminium alloys?

a)

Silicon

b)

Copper

c)

Zinc

d)

Magnesium

16.

What is a common use for 3XXX series aluminium alloys?

a)

Food and beverage cans

b)

Marine structures

c)

Aircraft landing gear

d)

Electrical conductors

17.

What is the primary use of 4XXX series aluminium alloys?

a)

Food packaging

b)

Electrical conductors

c)

Aircraft structures

d)

Welding filler materials

18.

What is a common characteristic of 1XXX series aluminium alloys?

a)

High purity

b)

High density

c)

High ductility

d)

High strength