Large forgings, crank shafts, axles normally contain carbon up to

Engineering Materials
Large forgings, crank shafts, axles normally contain carbon up to

0.20 to 0.45%

0.05 to 0.20%

0.55 to 1.0%

0.45 to 0.55%

0.20 to 0.45%

0.05 to 0.20%

0.55 to 1.0%

0.45 to 0.55%

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Engineering Materials
Which of the following steel making process is being adopted at Rourkela (in India) Steel Plant?

Bessemer process

Electric process

LD process

Open hearth process

Bessemer process

Electric process

LD process

Open hearth process

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Engineering Materials
If a refractory contains high content of silicon, it means refractory is

Acidic

Neutral

Basic

Brittle

Acidic

Neutral

Basic

Brittle

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Engineering Materials
Thermoplastic materials are those materials which

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

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

Are flexible and can withstand considerable wear under suitable conditions

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

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

Are flexible and can withstand considerable wear under suitable conditions

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Engineering Materials
Ductile cast iron

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 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 creium) in the ladle. Graphite is in 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

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Engineering Materials
A reversible change in the atomic structure of the steel with a corresponding change in the properties is known as

Heat treatment

Recrystallization

Allotropic change

Precipitation

Heat treatment

Recrystallization

Allotropic change

Precipitation

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Engineering Materials

Engineering Materials Large forgings, crank shafts, axles normally contain carbon up to

Engineering Materials Which of the following steel making process is being adopted at Rourkela (in India) Steel Plant?

Engineering Materials If a refractory contains high content of silicon, it means refractory is

Engineering Materials Thermoplastic materials are those materials which

Engineering Materials Ductile cast iron

Engineering Materials A reversible change in the atomic structure of the steel with a corresponding change in the properties is known as

Engineering Materials
Large forgings, crank shafts, axles normally contain carbon up to

Engineering Materials
Which of the following steel making process is being adopted at Rourkela (in India) Steel Plant?

Engineering Materials
If a refractory contains high content of silicon, it means refractory is

Engineering Materials
Thermoplastic materials are those materials which

Engineering Materials
Ductile cast iron

Engineering Materials
A reversible change in the atomic structure of the steel with a corresponding change in the properties is known as