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Engineering Materials

Engineering Materials
The presence of sulphur in pig iron makes

The casting unsound
It brittle
It hard
It easily machinable

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Engineering Materials
Cast iron is characterized by minimum of following percentage of carbon

0.013
0.02
0.002
0.008

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Engineering Materials
Body centered cubic space lattice is found in

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

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Engineering Materials
Sulphur in steel

Lowers the toughness and transverse ductility
Acts as deoxidiser
Reduces the grain size
Decreases tensile strength and hardness

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Engineering Materials
Monel metal contains

Malleable iron and zinc
63 to 67% nickel and 30% copper
88% copper and 10% tin and rest zinc
Alloy of tin, lead and cadmium

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Engineering Materials
The material widely used for making pendulums of clocks is

Heat resisting steel
Stainless steel
High speed steel
Nickel steel

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MORE MCQ ON Engineering Materials

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