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Engineering Materials

Engineering Materials
An eutectoid steel consists of

Pearlite and ferrite
Wholly pearlite
Wholly austenite
Pearlite and cementite

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Engineering Materials
The usual composition of a soldering alloy is

Tin and lead
Tin, lead and silver
Tin, lead and small percentage of antimony
Tin and copper

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Engineering Materials
Sulphur in cast iron

Make the iron white and hard
Increases hardness and brittleness
Makes the iron soft and easily machinable
Aids fusibility and fluidity

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Engineering Materials
Which of the following constituents of steels is softest and least strong?

Ferrite
Pearlite
Cementite
Austenite

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Engineering Materials
Bronze contains

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

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Engineering Materials
Chilled cast iron has

Graphite as its basic constituent of composition
A low percentage of graphite
A very high percentage of graphite
No graphite

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