Induction hardening is the process of

Engineering Materials
Induction hardening is the process of

Inducing hardness by continuous process

Increasing hardness throughout

Heating and cooling rapidly

Hardening surface of work-piece to obtain hard and wear resistant surface

Inducing hardness by continuous process

Increasing hardness throughout

Heating and cooling rapidly

Hardening surface of work-piece to obtain hard and wear resistant surface

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Engineering Materials
Malleable cast iron

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

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

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

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

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

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

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

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Engineering Materials
In compression, a prism of brittle material will break

By shearing along oblique plane

By crushing into thousands of pieces

In direction perpendicular to application of load

By forming a bulge

By shearing along oblique plane

By crushing into thousands of pieces

In direction perpendicular to application of load

By forming a bulge

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Engineering Materials
The brown smoke during the operation of a Bessemer converter indicates that the

Silicon and manganese has burnt and carbon has started oxidizing

The brown smoke does not occur during the operation of a Bessemer converter

Air is burning out silicon and manganese

The converter must be titled to remove the contents of the converter

Silicon and manganese has burnt and carbon has started oxidizing

The brown smoke does not occur during the operation of a Bessemer converter

Air is burning out silicon and manganese

The converter must be titled to remove the contents of the converter

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Engineering Materials
The toughness of a material __________ when it is heated.

Increases

Remain same

Decreases

None of these

Increases

Remain same

Decreases

None of these

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Engineering Materials
Crystal structure of a material is, generally, examined by

Optical microscope

Metallurgical microscope

Naked eye

X-ray techniques

Optical microscope

Metallurgical microscope

Naked eye

X-ray techniques

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Engineering Materials

Engineering Materials Induction hardening is the process of

Engineering Materials Malleable cast iron

Engineering Materials In compression, a prism of brittle material will break

Engineering Materials The brown smoke during the operation of a Bessemer converter indicates that the

Engineering Materials The toughness of a material __________ when it is heated.

Engineering Materials Crystal structure of a material is, generally, examined by

Engineering Materials
Induction hardening is the process of

Engineering Materials
Malleable cast iron

Engineering Materials
In compression, a prism of brittle material will break

Engineering Materials
The brown smoke during the operation of a Bessemer converter indicates that the

Engineering Materials
The toughness of a material __________ when it is heated.

Engineering Materials
Crystal structure of a material is, generally, examined by