WorksheetsAluminium & its Alloys Quiz
Total questions: 18
Worksheet time: 9mins
Which element is alloyed with aluminium to create Duralumin?
Copper
Magnesium
Zinc
Silicon
Why is pure aluminium unsuitable for aircraft structural members?
It is too expensive
It is too soft and lacks strength
It is too brittle
It is too heavy
How are wrought aluminium alloys identified?
By a four-digit number
By a letter code
By a three-digit number
By a color code
What is the effect of adding magnesium to aluminium?
Decreases strength and increases weight
Increases melting point and decreases ductility
Decreases weight and increases brittleness
Increases tensile strength and corrosion resistance
What is a disadvantage of 7XXX series aluminium alloys?
Low electrical conductivity
Stress corrosion cracking
Poor machinability
High density
Which property of aluminium makes it a good choice for aircraft skin?
High brittleness
Excellent corrosion resistance
Low melting point
High density
What is the advantage of Alclad over sheet aluminium alloy?
Better color
Lower cost
Higher weight
Increased corrosion resistance
Which series of aluminium alloys is known for better fatigue performance?
2XXX series
3XXX series
6XXX series
5XXX series
What is the primary benefit of adding silicon to aluminium?
Increases brittleness
Decreases corrosion resistance
Increases weight
Reduces melting point
Which element, when alloyed with aluminium, increases its stiffness but also makes it more brittle?
Zinc
Copper
Magnesium
Silicon
What is the primary characteristic of 2XXX series aluminium alloys?
High corrosion resistance
High strength
High ductility
Low density
Which element is commonly added to aluminium to improve its machinability?
Nickel
Lead
Iron
Chromium
What is a common application of 5XXX series aluminium alloys?
Aircraft structures
Electrical wiring
Automotive body panels
Marine environments
What is the main advantage of using 6XXX series aluminium alloys in construction?
Low cost
Good corrosion resistance and medium strength
High thermal conductivity
High density
Which element is primarily responsible for the high strength of 2XXX series aluminium alloys?
Silicon
Copper
Zinc
Magnesium
What is a common use for 3XXX series aluminium alloys?
Food and beverage cans
Marine structures
Aircraft landing gear
Electrical conductors
What is the primary use of 4XXX series aluminium alloys?
Food packaging
Electrical conductors
Aircraft structures
Welding filler materials
What is a common characteristic of 1XXX series aluminium alloys?
High purity
High density
High ductility
High strength
