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Engineering Materials

Engineering Materials
Hardness of lower bainite (tempered martensite) is about

RC 57
RC 48
RC 80
RC 65

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Engineering Materials
Which of the following metal is used in making electrical resistance wire for electric furnaces and heating elements?

Nichrome
Monel metal
Babbitt metal
Phosphor bronze

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Engineering Materials
Acidic solution is one which has pH value

pH value has nothing to do with neutral solution
Greater than 7
Equal to 7
Less than 7

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Engineering Materials
The percentage carbon content in wrought iron is about

2
0.4
0.02
0.1

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Engineering Materials
Gun metal contains

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

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

Molybdenum
Vanadium
Nickel
Cobalt

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