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Engineering Materials

Engineering Materials
Which of the following alloys does not have copper as one of the constituents?

Nichrome
Constantan
Delta metal
Monel metal

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Engineering Materials
Iron-carbon alloys containing carbon ________ 4.3% are known as hyper-eutectic cast irons.

None of these
More than
Less than
Equal to

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Engineering Materials
The alloying element which can replace tungsten in high speed steels is

Molybdenum
Vanadium
Cobalt
Nickel

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Engineering Materials
Bronze is an alloy of

Copper and zinc
Copper and tin
Copper, tin and zinc
None of these

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Engineering Materials
In high speed steels, manganese is used to tougher the metal and to increase its

Melting point
Yield point
Hardness
Critical temperature

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Engineering Materials
Vanadium in high speed steels

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

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