The alloy used for making electrical resistances and heating elements is

Engineering Materials
The alloy used for making electrical resistances and heating elements is

Elinvar

Nichrome

Magnin

Invar

Elinvar

Nichrome

Magnin

Invar

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Engineering Materials
Carbon steel is

An alloy of iron and carbon with varying quantities of phosphorus and sulphur

Extensively used for making cutting tools

Refined from cast iron

Made by adding carbon in steel

An alloy of iron and carbon with varying quantities of phosphorus and sulphur

Extensively used for making cutting tools

Refined from cast iron

Made by adding carbon in steel

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Engineering Materials
The charge is fed into the blast furnace through the

Stack

Throat

Tyres

Bosh

Stack

Throat

Tyres

Bosh

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Engineering Materials
Grey cast iron

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

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

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

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

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

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

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

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

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Engineering Materials
Which of the following represents the allotropic forms of iron?

Alpha iron and beta iron

Alpha iron, beta iron and gamma iron

Body centered cubic iron and face centered cubic iron

Alpha iron, gamma from and delta iron

Alpha iron and beta iron

Alpha iron, beta iron and gamma iron

Body centered cubic iron and face centered cubic iron

Alpha iron, gamma from and delta iron

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Engineering Materials
A coarse grained steel

Is less tough and has a greater tendency to distort during heat treatment

Is less tough and has a less tendency to distort during heat treatment

Is more ductile and has a greater tendency to distort during heat treatment

Is more ductile and has a less tendency to distort during heat treatment

Is less tough and has a greater tendency to distort during heat treatment

Is less tough and has a less tendency to distort during heat treatment

Is more ductile and has a greater tendency to distort during heat treatment

Is more ductile and has a less tendency to distort during heat treatment

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Engineering Materials

Engineering Materials The alloy used for making electrical resistances and heating elements is

Engineering Materials Carbon steel is

Engineering Materials The charge is fed into the blast furnace through the

Engineering Materials Grey cast iron

Engineering Materials Which of the following represents the allotropic forms of iron?

Engineering Materials A coarse grained steel

Engineering Materials
The alloy used for making electrical resistances and heating elements is

Engineering Materials
Carbon steel is

Engineering Materials
The charge is fed into the blast furnace through the

Engineering Materials
Grey cast iron

Engineering Materials
Which of the following represents the allotropic forms of iron?

Engineering Materials
A coarse grained steel