Induction hardening is the process of

Engineering Materials
Induction hardening is the process of

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

Inducing hardness by continuous process

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Engineering Materials
Thermoplastic materials are those materials which

Are used as a friction lining for clutches and brakes

Are flexible and can withstand considerable wear under suitable conditions

Do not become hard with the application of heat and pressure and no chemical change occurs

Are formed into shape under heat and pressure and results in a permanently hard product

Are used as a friction lining for clutches and brakes

Are flexible and can withstand considerable wear under suitable conditions

Do not become hard with the application of heat and pressure and no chemical change occurs

Are formed into shape under heat and pressure and results in a permanently hard product

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Engineering Materials
Ductile cast iron

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

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

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

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

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

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Engineering Materials
Iron-carbon alloys containing 1.7 to 4.3% carbon are known as

None of these

Eutectic cast irons

Hypoeutectic cast irons

Hypereutectic cast irons

None of these

Eutectic cast irons

Hypoeutectic cast irons

Hypereutectic cast irons

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Engineering Materials
When the steel is normalized, its

Yield point increases

All of these

Ductility decreases

Ultimate tensile strength increases

Yield point increases

All of these

Ductility decreases

Ultimate tensile strength increases

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Engineering Materials
Drop forging dies contain carbon of the order of

0.1 to 0.2%

0.6 to 0.7%

0.25 to 0.5%

0.7 to 0.9%

0.1 to 0.2%

0.6 to 0.7%

0.25 to 0.5%

0.7 to 0.9%

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Engineering Materials

Engineering Materials Induction hardening is the process of

Engineering Materials Thermoplastic materials are those materials which

Engineering Materials Ductile cast iron

Engineering Materials Iron-carbon alloys containing 1.7 to 4.3% carbon are known as

Engineering Materials When the steel is normalized, its

Engineering Materials Drop forging dies contain carbon of the order of

Engineering Materials
Induction hardening is the process of

Engineering Materials
Thermoplastic materials are those materials which

Engineering Materials
Ductile cast iron

Engineering Materials
Iron-carbon alloys containing 1.7 to 4.3% carbon are known as

Engineering Materials
When the steel is normalized, its

Engineering Materials
Drop forging dies contain carbon of the order of