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Engineering Materials

Engineering Materials
Which of the following when used in ordinary low carbon steels, makes the metal ductile and of good bending qualities?

Manganese
Phosphorus
Silicon
Sulphur

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

Cast steel
Brass
Admiralty metal
Cast iron

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Engineering Materials
German silver is an alloy of

Silver and some impurities
Nickel, Copper and zinc
Nickel and copper
Refined silver

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Engineering Materials
The alloying element which increases residual magnetism and coercive magnetic force in steel for magnets is

Chromium
Nickel
Cobalt
Vanadium

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Engineering Materials
Bell metal contains

85 - 92% copper and rest tin with little lead and nickel
70% copper and 30% zinc
90% copper and 10% tin
70 - 75% copper and rest tin

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Engineering Materials
Tungsten in high speed steel provides

Wear resistance
Toughness
Sharp cutting edge
Hot hardness

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