Introduction to Materials (Leaving Cert Engineering): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What does hardness measure in a material?
What does hardness measure in a material?
Resistance to scratching & indentation
What typically happens to materials that are extremely hard?
What typically happens to materials that are extremely hard?
They become brittle & may shatter
Which property describes how well a material absorbs impact energy without fracturing?
Which property describes how well a material absorbs impact energy without fracturing?
Toughness
Which metals demonstrate high ductility according to the note?
Which metals demonstrate high ductility according to the note?
Copper and aluminium
What characterises brittle failure compared to ductile failure?
What characterises brittle failure compared to ductile failure?
Snaps suddenly without warning
What is the elastic limit?
What is the elastic limit?
Threshold beyond which permanent damage occurs
Why is copper preferred over gold for most electrical applications?
Why is copper preferred over gold for most electrical applications?
Best cost-performance balance
What effect does lowering temperature have on materials?
What effect does lowering temperature have on materials?
Makes them more brittle
What units are used to measure tensile strength?
What units are used to measure tensile strength?
Why is fatigue failure particularly dangerous?
Why is fatigue failure particularly dangerous?
Occurs at loads below normal strength
What is the key difference between creep and fatigue?
What is the key difference between creep and fatigue?
Creep: steady loads; Fatigue: cycles
Why does reinforced concrete combine concrete with steel?
Why does reinforced concrete combine concrete with steel?
Concrete: compression; Steel: tension