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Engineering Materials

Engineering Materials
Depth of hardness of steel is increased by addition of

Tungsten
Nickel
Chromium
Vanadium

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Engineering Materials
Manganese is added in low carbon steel to

Make the steel ductile and of good bending qualities
Make the steel tougher and harder
Raise the yield point
All of these

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Engineering Materials
Process of Austempering results in

Martenistic structure
Lamellar layers of carbide distributed throughout the structure
Carburised structure
Formation of bainite structure

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Engineering Materials
Addition of lead and bismuth to aluminium results in

Improving machinability
One of the best known age and precipitation hardening systems
Improvement of corrosion resistance
Improvement of casting characteristics

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Engineering Materials
Which of the following metal shrinks most from molten state to solid state?

Cast steel
Cast iron
Admiralty metal
Brass

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Engineering Materials
The lower critical temperature

Depends upon the rate of heating
Decreases as the carbon content in steel increases
Increases as the carbon content in steel increases
Is same for all steels

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