The crystal structure of brass is

Engineering Materials
The crystal structure of brass is

C.C.

F.C.C.

Orthorhombic crystalline structure

H.C.P.

C.C.

F.C.C.

Orthorhombic crystalline structure

H.C.P.

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Engineering Materials
The hardness is the property of a material due to which it

Breaks with little permanent distortion

Can be rolled or hammered into thin sheets

Can cut another metal

Can be drawn into wires

Breaks with little permanent distortion

Can be rolled or hammered into thin sheets

Can cut another metal

Can be drawn into wires

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Engineering Materials
Which of the following material has nearly zero coefficient of expansion?

Heat resisting steel

Stainless steel

Invar

High speed steel

Heat resisting steel

Stainless steel

Invar

High speed steel

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Engineering Materials
Dow metal contains

90% aluminium and 90% copper

92.5% aluminium and, 4% copper, 2% nickel and 1.5% Mg

94% aluminium, 4% copper and 0.5% Mn, Mg, Si and Fe

90% magnesium and 9% aluminium with some copper

90% aluminium and 90% copper

92.5% aluminium and, 4% copper, 2% nickel and 1.5% Mg

94% aluminium, 4% copper and 0.5% Mn, Mg, Si and Fe

90% magnesium and 9% aluminium with some copper

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Engineering Materials
Malleable cast iron

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 cerium) in the ladle. Graphite is in the 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 cerium) in the ladle. Graphite is in the 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

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Engineering Materials
When low carbon steel is heated up to lower critical temperature

The grain size increases very rapidly

The average grain size is a minimum

The grain size first increases and then decreases very rapidly

There is no change in grain size

The grain size increases very rapidly

The average grain size is a minimum

The grain size first increases and then decreases very rapidly

There is no change in grain size

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Engineering Materials

Engineering Materials The crystal structure of brass is

Engineering Materials The hardness is the property of a material due to which it

Engineering Materials Which of the following material has nearly zero coefficient of expansion?

Engineering Materials Dow metal contains

Engineering Materials Malleable cast iron

Engineering Materials When low carbon steel is heated up to lower critical temperature

Engineering Materials
The crystal structure of brass is

Engineering Materials
The hardness is the property of a material due to which it

Engineering Materials
Which of the following material has nearly zero coefficient of expansion?

Engineering Materials
Dow metal contains

Engineering Materials
Malleable cast iron

Engineering Materials
When low carbon steel is heated up to lower critical temperature