Crystal structure of a material is, generally, examined by

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

X-ray techniques

Metallurgical microscope

Optical microscope

Naked eye

X-ray techniques

Metallurgical microscope

Optical microscope

Naked eye

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Engineering Materials
Which of the following impurity in cast iron promotes graphite nodule formation and increases the fluidity of the molten metal?

Silicon

Phosphorus

Sulphur

Manganese

Silicon

Phosphorus

Sulphur

Manganese

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Engineering Materials
Grey cast iron

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

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

Is produced by small additions o magnesium (or cerium) 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 is obtained by cooling rapidly. It is almost unmachinable

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

Is produced by small additions o magnesium (or cerium) 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

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Engineering Materials
Surveying tapes are made of a material having low coefficient of expansion and enough strength. The alloy used is

Duralumin

Hastelloy

Silver metal

Invar

Duralumin

Hastelloy

Silver metal

Invar

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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

Allotropic change

Precipitation

Recrystallization

Heat treatment

Allotropic change

Precipitation

Recrystallization

Heat treatment

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Engineering Materials
Free carbon in iron makes the metal

Soft and gives a fine grained crystalline structure

Soft and gives a coarse grained crystalline structure

Hard and gives a fine grained crystalline structure

Hard and gives a coarse grained crystalline structure

Soft and gives a fine grained crystalline structure

Soft and gives a coarse grained crystalline structure

Hard and gives a fine grained crystalline structure

Hard and gives a coarse grained crystalline structure

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Engineering Materials

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

Engineering Materials Which of the following impurity in cast iron promotes graphite nodule formation and increases the fluidity of the molten metal?

Engineering Materials Grey cast iron

Engineering Materials Surveying tapes are made of a material having low coefficient of expansion and enough strength. The alloy used is

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

Engineering Materials Free carbon in iron makes the metal

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

Engineering Materials
Which of the following impurity in cast iron promotes graphite nodule formation and increases the fluidity of the molten metal?

Engineering Materials
Grey cast iron

Engineering Materials
Surveying tapes are made of a material having low coefficient of expansion and enough strength. The alloy used is

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

Engineering Materials
Free carbon in iron makes the metal