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Engineering Materials

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

RC 57
RC 65
RC 48
RC 80

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Engineering Materials
Slow plastic deformation of metals under a constant stress is known as

Endurance
Fatigue
Plastic deformation
Creep

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Engineering Materials
Grey cast iron has

Carbon in the form of free graphite
All of these
Low compressive strength
High tensile strength

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Engineering Materials
The steel widely used for motor car crankshafts is

Silicon steel
Chrome steel
Nickel-chrome steel
Nickel steel

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

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

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Engineering Materials
In the lower part of the blast furnace (zone of fusion), the temperature is

1200°C to 1300°C
1500°C to 1700°C
400° to 700°C
800°C to 1000°C

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