According to Indian standard specifications, plain carbon steel designated by 40 C8 means that the carbon content is

Engineering Materials
According to Indian standard specifications, plain carbon steel designated by 40 C8 means that the carbon content is

0.6 to 0.8%

0.4 to 0.6%

0.35 to 0.45%

0.0004

0.6 to 0.8%

0.4 to 0.6%

0.35 to 0.45%

0.0004

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Engineering Materials
Nodular iron has

High machinability

High tensile strength

All of these

Low melting point

High machinability

High tensile strength

All of these

Low melting point

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Engineering Materials
Thermoplastic materials are those materials which

Are used as a friction lining for clutches and brakes

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

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 used as a friction lining for clutches and brakes

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

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
White 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

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 and is obtained by cooling rapidly. It is almost unmachinable

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

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 and is obtained by cooling rapidly. It is almost unmachinable

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

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Engineering Materials
Iron-carbon alloys containing carbon ________ 4.3% are known as hyper-eutectic cast irons.

More than

Less than

None of these

Equal to

More than

Less than

None of these

Equal to

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Engineering Materials
In spheroidising process, the steel is

Heated up to the lower critical temperature and then cooled in still air

Heated below the lower critical temperature and then cooled slowly

Heated slightly above the lower critical temperature and then cooled slowly to a temperature of 600°C

None of these

Heated up to the lower critical temperature and then cooled in still air

Heated below the lower critical temperature and then cooled slowly

Heated slightly above the lower critical temperature and then cooled slowly to a temperature of 600°C

None of these

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Engineering Materials

Engineering Materials According to Indian standard specifications, plain carbon steel designated by 40 C8 means that the carbon content is

Engineering Materials Nodular iron has

Engineering Materials Thermoplastic materials are those materials which

Engineering Materials White cast iron

Engineering Materials Iron-carbon alloys containing carbon ________ 4.3% are known as hyper-eutectic cast irons.

Engineering Materials In spheroidising process, the steel is

Engineering Materials
According to Indian standard specifications, plain carbon steel designated by 40 C8 means that the carbon content is

Engineering Materials
Nodular iron has

Engineering Materials
Thermoplastic materials are those materials which

Engineering Materials
White cast iron

Engineering Materials
Iron-carbon alloys containing carbon ________ 4.3% are known as hyper-eutectic cast irons.

Engineering Materials
In spheroidising process, the steel is