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Engineering Materials

Engineering Materials
Age hardening is related to

Duralumin
Brass
Copper
Silver

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Engineering Materials
The ultimate tensile strength and yield strength of most of the metals, when temperature falls from 0 to 100°C will

Decrease
Remain same
Increase
First increase and then decrease

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Engineering Materials
Addition of manganese to aluminium results in

Improving machinability
One of the best known age and precipitation hardening systems
Improvement of casting characteristics
Improvement of corrosion resistance

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Engineering Materials
Which of the following has highest specific strength of all structural materials?

Magnesium alloys
Titanium alloys
Chromium alloys
Magnetic steel alloys

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Engineering Materials
The main alloying elements high speed steel in order of increasing proportion are

Tungsten, titanium, vanadium
Chromium, titanium, vanadium
Vanadium, chromium, tungsten
Tungsten, chromium, titanium

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Engineering Materials
A small percentage of boron is added to steel in order to

Increase endurance strength
Increase wear resistance
Increase hardenability
Reduce machinability

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MORE MCQ ON Engineering Materials

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