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Engineering Materials

Engineering Materials
The property of a material which enables it to retain the deformation permanently, is called

Ductility
Plasticity
Brittleness
Malleability

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Engineering Materials
Iron-carbon alloys containing 1.7 to 4.3% carbon are known as

Eutectic cast irons
Hypereutectic cast irons
None of these
Hypoeutectic cast irons

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Engineering Materials
Closed packed hexagonal space lattice is found in

Alpha-iron, tungsten, chromium and molybdenum
Gamma-iron, aluminium, copper, lead, silver and nickel
Zinc, magnesium, cobalt, cadmium, antimony and bismuth
None of these

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Engineering Materials
Constantan an alloy used in thermocouples is an alloy of

Copper and zinc
Copper and tin
Copper and nickel
Copper and iron

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Engineering Materials
The metal suitable for bearings subjected to light loads, is

White metal
Silicon bronze
Monel metal
Phosphor bronze

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Engineering Materials
The lower critical temperature

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

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