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

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

Can be rolled or hammered into thin sheets

Breaks with little permanent distortion

Can cut another metal

Can be drawn into wires

Can be rolled or hammered into thin sheets

Breaks with little permanent distortion

Can cut another metal

Can be drawn into wires

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Engineering Materials
In full annealing, the hypo eutectoid steel is heated from 30°C to 50°C above the upper critical temperature and then cooled

Slowly in the furnace

In still air

Any one of these

Suddenly in a suitable cooling medium

Slowly in the furnace

In still air

Any one of these

Suddenly in a suitable cooling medium

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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

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

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

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Engineering Materials
The material widely used for making pendulums of clocks is

High speed steel

Nickel steel

Heat resisting steel

Stainless steel

High speed steel

Nickel steel

Heat resisting steel

Stainless steel

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Engineering Materials
The machinability of aluminium increases when _________ is added to aluminium.

Silicon

Magnesium

Lead and bismuth

Copper

Silicon

Magnesium

Lead and bismuth

Copper

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Engineering Materials
Beryllium bronze contains

97.75% copper and 2.25% beryllium

60% copper and 40% beryllium

99% copper and 1% beryllium

80% copper and 20% beryllium

97.75% copper and 2.25% beryllium

60% copper and 40% beryllium

99% copper and 1% beryllium

80% copper and 20% beryllium

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Engineering Materials

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

Engineering Materials In full annealing, the hypo eutectoid steel is heated from 30°C to 50°C above the upper critical temperature and then cooled

Engineering Materials White cast iron

Engineering Materials The material widely used for making pendulums of clocks is

Engineering Materials The machinability of aluminium increases when _________ is added to aluminium.

Engineering Materials Beryllium bronze contains

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

Engineering Materials
In full annealing, the hypo eutectoid steel is heated from 30°C to 50°C above the upper critical temperature and then cooled

Engineering Materials
White cast iron

Engineering Materials
The material widely used for making pendulums of clocks is

Engineering Materials
The machinability of aluminium increases when _________ is added to aluminium.

Engineering Materials
Beryllium bronze contains