White cast iron | EXAMIANS

Engineering Materials
White cast iron

Contains 1.7 to 3.5% carbon in Free State and is obtained by the slow cooling of molten cast iron

Is produced by annealing process. It is soft, tough and easily machined metal

Is also known as chilled cast iron and is obtained by cooling rapidly. It is almost unmachinable

Is produced by small additions of magnesium (or creium) in the ladle. Graphite is in nodular or spheroidal form and is well dispersed throughout the material

Contains 1.7 to 3.5% carbon in Free State and is obtained by the slow cooling of molten cast iron

Is produced by annealing process. It is soft, tough and easily machined metal

Is also known as chilled cast iron and is obtained by cooling rapidly. It is almost unmachinable

Is produced by small additions of magnesium (or creium) in the ladle. Graphite is in nodular or spheroidal form and is well dispersed throughout the material

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Engineering Materials
Which of the following impurity in cast iron makes it hard and brittle?

Sulphur

Phosphorus

Silicon

Manganese

Sulphur

Phosphorus

Silicon

Manganese

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Engineering Materials
Which of the following material has nearly zero coefficient of expansion?

High speed steel

Heat resisting steel

Stainless steel

Invar

High speed steel

Heat resisting steel

Stainless steel

Invar

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Engineering Materials
For a steel containing 0.8% carbon

There is only one critical point

There are two critical points

There is no critical point

There can be any number of critical points

There is only one critical point

There are two critical points

There is no critical point

There can be any number of critical points

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Engineering Materials
Acidic solution is one which has pH value

Greater than 7

pH value has nothing to do with neutral solution

Less than 7

Equal to 7

Greater than 7

pH value has nothing to do with neutral solution

Less than 7

Equal to 7

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Engineering Materials
Aluminium bronze contains

90% magnesium and 9% aluminium with some copper

92.5% aluminium, 4% copper, 2% nickel, and 1.5% Mg

94% aluminium, 4% copper and 0.5% Mn, Mg, Si and Fe

10% aluminium and 90% copper

90% magnesium and 9% aluminium with some copper

92.5% aluminium, 4% copper, 2% nickel, and 1.5% Mg

94% aluminium, 4% copper and 0.5% Mn, Mg, Si and Fe

10% aluminium and 90% copper

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Engineering Materials

Engineering Materials White cast iron

Engineering Materials Which of the following impurity in cast iron makes it hard and brittle?

Engineering Materials Which of the following material has nearly zero coefficient of expansion?

Engineering Materials For a steel containing 0.8% carbon

Engineering Materials Acidic solution is one which has pH value

Engineering Materials Aluminium bronze contains

Engineering Materials
White cast iron

Engineering Materials
Which of the following impurity in cast iron makes it hard and brittle?

Engineering Materials
Which of the following material has nearly zero coefficient of expansion?

Engineering Materials
For a steel containing 0.8% carbon

Engineering Materials
Acidic solution is one which has pH value

Engineering Materials
Aluminium bronze contains