Silicon when added to copper improves

Engineering Materials
Silicon when added to copper improves

Hardness and strength

Machinability

Strength and ductility

Hardness

Hardness and strength

Machinability

Strength and ductility

Hardness

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Engineering Materials
The material in which the atoms are arranged regularly in some directions but not in others, is called

Amorphous material

Mesomorphous material

None of these

Crystalline material

Amorphous material

Mesomorphous material

None of these

Crystalline material

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

0.4 to 0.6%

0.0004

0.6 to 0.8%

0.35 to 0.45%

0.4 to 0.6%

0.0004

0.6 to 0.8%

0.35 to 0.45%

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Engineering Materials
A coarse grained steel

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

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

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

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

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

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

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

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

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Engineering Materials
White 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 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

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Engineering Materials
Which is false statement about annealing? Annealing is done to

Relieve stresses

Harden steel slightly

Soften material

Improve machining characteristic

Relieve stresses

Harden steel slightly

Soften material

Improve machining characteristic

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Engineering Materials

Engineering Materials Silicon when added to copper improves

Engineering Materials The material in which the atoms are arranged regularly in some directions but not in others, is called

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

Engineering Materials A coarse grained steel

Engineering Materials White cast iron

Engineering Materials Which is false statement about annealing? Annealing is done to

Engineering Materials
Silicon when added to copper improves

Engineering Materials
The material in which the atoms are arranged regularly in some directions but not in others, is called

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

Engineering Materials
A coarse grained steel

Engineering Materials
White cast iron

Engineering Materials
Which is false statement about annealing? Annealing is done to