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Engineering Materials

Engineering Materials
The temperature at which ferromagnetic alpha iron transforms to paramagnetic alpha iron is

1050°C
770°C
910°C
Below recrystallization temperature

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Engineering Materials
Basic constituents of Monel metal are

Nickel, lead and tin
Nickel, molybdenum
Zinc, tin, lead
Nickel, copper

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

Chromium
Vanadium
Nickel
Tungsten

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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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Engineering Materials
Hardness of martensite is about

RC 65
RC 80
RC 48
RC 57

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Engineering Materials
Induction hardening is the process of

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

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