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Engineering Materials

Engineering Materials
Super conduction by metals is observed in the temperature range of

Below 10°K
Above 100°K
Around 0°C
Around 100°C

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Engineering Materials
Brass contains

70% copper and 30% zinc
85 - 92% copper and rest tin with little lead and nickel
70 - 75% copper and rest tin
90% copper and 10% tin

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

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

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Engineering Materials
Acidic solution is one which has pH value

Equal to 7
pH value has nothing to do with neutral solution
Greater than 7
Less than 7

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Engineering Materials
Pearlite consists of

13% ferrite and 87% cementite
6.67% carbon and 93.33% iron
13% carbon and 87% ferrite
13% cementite and 87% ferrite

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Engineering Materials
Addition of silicon to aluminium results in

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

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MORE MCQ ON Engineering Materials

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