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Engineering Materials

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

Equal to
More than
None of these
Less than

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Engineering Materials
The machinability of steel is increased by

Phosphorous, lead and sulphur
Phosphorous and aluminium
Sulphur, graphite and aluminium
Silicon and sulphur

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Engineering Materials
Depth of hardness of steel is increased by addition of

Chromium
Nickel
Tungsten
Vanadium

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Engineering Materials
Which of the following display properties similar to that of steel?

None of these
Whiteheart cast iron
Both (A) and (B)
Blackheart cast iron

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Engineering Materials
Weld decay is the phenomenon found with

Stainless steel
Cast iron
Mild steel
Nonferrous materials

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Engineering Materials
Induction hardening is the process of

Heating and cooling rapidly
Increasing hardness throughout
Inducing hardness by continuous process
Hardening surface of work-piece to obtain hard and wear resistant surface

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