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Engineering Materials

Engineering Materials
Cupola produces following material

Wrought iron
Malleable iron
Pig iron
Cast iron

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Engineering Materials
Which of the following metal is used for nuclear energy?

All of these
Niobium
Thorium
Uranium

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Engineering Materials
Vanadium in high speed steels

Forms very hard carbides and thus increases wear resistance
Promotes retention of austenite
Promotes decarburisation
Provides high hot hardness

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Engineering Materials
A material is said to be allotropic, if it has

Any one of the above
Different crystal structures at different temperatures
Fixed structure at all temperatures
Atoms distributed in random pattern

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Engineering Materials
Admiralty brass used for steam condenser tubes contains copper and zinc in the following ratio

2.9375
40 : 60
30 : 70
2.1180555555556

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Engineering Materials
Gun metal contains

90% copper and 10% tin
70% copper and 30% zinc
85 - 92% copper and rest tin with little lead and nickel
70 - 78% copper and rest tin

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