ENGINEERING MATERIALS QUIZ

Mild steel belongs to the following category

Low carbon steel

High carbon steel

Medium carbon steel

Alloy steel

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German silver is an alloy of

Silver and some impurities

Nickel, Copper and zinc

Refined silver

Nickel and copper

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An example of amorphous material is

Glass

Silver

Zinc

Lead

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Perminvar alloy having constant permeability is an alloy of

Iron, zinc and bismuth

Copper, nickel and antimony

Nickel, copper and iron

Nickel, copper and zinc

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Recrystallization temperature can be lowered by

Grain refinement

All of these

Working at lower temperature

Purification of metal

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Balls for ball bearings are made of

Cast iron

Mild steel

Stainless steel

Carbon-chrome steel

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Isotropic materials are those which have the same

Stresses induced in all directions

Elastic properties in all directions

Electric and magnetic properties in all directions

Thermal properties in all directions

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Which of the following property is desirable for materials used in tools and machines?

Ductility

Plasticity

Elasticity

Malleability

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In the lower part of the blast furnace (zone of fusion), the temperature is

1200°C to 1300°C

1500°C to 1700°C

800°C to 1000°C

400° to 700°C

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Iron is

Ferroelectric

Ferromagnetic

Paramagnetic

Dielectric

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